libpcsxcore/psxbios.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team              *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
  18  ***************************************************************************/
  19
  20 /*
  21  * Internal simulated HLE BIOS.
  22  */
  23
  24 // TODO: implement all system calls, count the exact CPU cycles of system calls.
  25
  26 #include "psxbios.h"
  27 #include "psxhw.h"
  28 #include "gpu.h"
  29 #include <zlib.h>
  30
  31 #undef SysPrintf
  32 #define SysPrintf if (Config.PsxOut) printf
  33
  34 char *biosA0n[256] = {
  35 // 0x00
  36         "open",         "lseek",        "read",         "write",
  37         "close",        "ioctl",        "exit",         "sys_a0_07",
  38         "getc",         "putc",         "todigit",      "atof",
  39         "strtoul",      "strtol",       "abs",          "labs",
  40 // 0x10
  41         "atoi",         "atol",         "atob",         "setjmp",
  42         "longjmp",      "strcat",       "strncat",      "strcmp",
  43         "strncmp",      "strcpy",       "strncpy",      "strlen",
  44         "index",        "rindex",       "strchr",       "strrchr",
  45 // 0x20
  46         "strpbrk",      "strspn",       "strcspn",      "strtok",
  47         "strstr",       "toupper",      "tolower",      "bcopy",
  48         "bzero",        "bcmp",         "memcpy",       "memset",
  49         "memmove",      "memcmp",       "memchr",       "rand",
  50 // 0x30
  51         "srand",        "qsort",        "strtod",       "malloc",
  52         "free",         "lsearch",      "bsearch",      "calloc",
  53         "realloc",      "InitHeap",     "_exit",        "getchar",
  54         "putchar",      "gets",         "puts",         "printf",
  55 // 0x40
  56         "sys_a0_40",            "LoadTest",                                     "Load",         "Exec",
  57         "FlushCache",           "InstallInterruptHandler",      "GPU_dw",       "mem2vram",
  58         "SendGPUStatus",        "GPU_cw",                                       "GPU_cwb",      "SendPackets",
  59         "sys_a0_4c",            "GetGPUStatus",                         "GPU_sync",     "sys_a0_4f",
  60 // 0x50
  61         "sys_a0_50",            "LoadExec",                             "GetSysSp",             "sys_a0_53",
  62         "_96_init()",           "_bu_init()",                   "_96_remove()", "sys_a0_57",
  63         "sys_a0_58",            "sys_a0_59",                    "sys_a0_5a",    "dev_tty_init",
  64         "dev_tty_open",         "sys_a0_5d",                    "dev_tty_ioctl","dev_cd_open",
  65 // 0x60
  66         "dev_cd_read",          "dev_cd_close",                 "dev_cd_firstfile",     "dev_cd_nextfile",
  67         "dev_cd_chdir",         "dev_card_open",                "dev_card_read",        "dev_card_write",
  68         "dev_card_close",       "dev_card_firstfile",   "dev_card_nextfile","dev_card_erase",
  69         "dev_card_undelete","dev_card_format",          "dev_card_rename",      "dev_card_6f",
  70 // 0x70
  71         "_bu_init",                     "_96_init",             "_96_remove",           "sys_a0_73",
  72         "sys_a0_74",            "sys_a0_75",    "sys_a0_76",            "sys_a0_77",
  73         "_96_CdSeekL",          "sys_a0_79",    "sys_a0_7a",            "sys_a0_7b",
  74         "_96_CdGetStatus",      "sys_a0_7d",    "_96_CdRead",           "sys_a0_7f",
  75 // 0x80
  76         "sys_a0_80",            "sys_a0_81",    "sys_a0_82",            "sys_a0_83",
  77         "sys_a0_84",            "_96_CdStop",   "sys_a0_86",            "sys_a0_87",
  78         "sys_a0_88",            "sys_a0_89",    "sys_a0_8a",            "sys_a0_8b",
  79         "sys_a0_8c",            "sys_a0_8d",    "sys_a0_8e",            "sys_a0_8f",
  80 // 0x90
  81         "sys_a0_90",            "sys_a0_91",    "sys_a0_92",            "sys_a0_93",
  82         "sys_a0_94",            "sys_a0_95",    "AddCDROMDevice",       "AddMemCardDevide",
  83         "DisableKernelIORedirection",           "EnableKernelIORedirection", "sys_a0_9a", "sys_a0_9b",
  84         "SetConf",                      "GetConf",              "sys_a0_9e",            "SetMem",
  85 // 0xa0
  86         "_boot",                        "SystemError",  "EnqueueCdIntr",        "DequeueCdIntr",
  87         "sys_a0_a4",            "ReadSector",   "get_cd_status",        "bufs_cb_0",
  88         "bufs_cb_1",            "bufs_cb_2",    "bufs_cb_3",            "_card_info",
  89         "_card_load",           "_card_auto",   "bufs_cd_4",            "sys_a0_af",
  90 // 0xb0
  91         "sys_a0_b0",            "sys_a0_b1",    "do_a_long_jmp",        "sys_a0_b3",
  92         "?? sub_function",
  93 };
  94
  95 char *biosB0n[256] = {
  96 // 0x00
  97         "SysMalloc",            "sys_b0_01",    "sys_b0_02",    "sys_b0_03",
  98         "sys_b0_04",            "sys_b0_05",    "sys_b0_06",    "DeliverEvent",
  99         "OpenEvent",            "CloseEvent",   "WaitEvent",    "TestEvent",
 100         "EnableEvent",          "DisableEvent", "OpenTh",               "CloseTh",
 101 // 0x10
 102         "ChangeTh",                     "sys_b0_11",    "InitPAD",              "StartPAD",
 103         "StopPAD",                      "PAD_init",             "PAD_dr",               "ReturnFromExecption",
 104         "ResetEntryInt",        "HookEntryInt", "sys_b0_1a",    "sys_b0_1b",
 105         "sys_b0_1c",            "sys_b0_1d",    "sys_b0_1e",    "sys_b0_1f",
 106 // 0x20
 107         "UnDeliverEvent",       "sys_b0_21",    "sys_b0_22",    "sys_b0_23",
 108         "sys_b0_24",            "sys_b0_25",    "sys_b0_26",    "sys_b0_27",
 109         "sys_b0_28",            "sys_b0_29",    "sys_b0_2a",    "sys_b0_2b",
 110         "sys_b0_2c",            "sys_b0_2d",    "sys_b0_2e",    "sys_b0_2f",
 111 // 0x30
 112         "sys_b0_30",            "sys_b0_31",    "open",                 "lseek",
 113         "read",                         "write",                "close",                "ioctl",
 114         "exit",                         "sys_b0_39",    "getc",                 "putc",
 115         "getchar",                      "putchar",              "gets",                 "puts",
 116 // 0x40
 117         "cd",                           "format",               "firstfile",    "nextfile",
 118         "rename",                       "delete",               "undelete",             "AddDevice",
 119         "RemoteDevice",         "PrintInstalledDevices", "InitCARD", "StartCARD",
 120         "StopCARD",                     "sys_b0_4d",    "_card_write",  "_card_read",
 121 // 0x50
 122         "_new_card",            "Krom2RawAdd",  "sys_b0_52",    "sys_b0_53",
 123         "_get_errno",           "_get_error",   "GetC0Table",   "GetB0Table",
 124         "_card_chan",           "sys_b0_59",    "sys_b0_5a",    "ChangeClearPAD",
 125         "_card_status",         "_card_wait",
 126 };
 127
 128 char *biosC0n[256] = {
 129 // 0x00
 130         "InitRCnt",                       "InitException",              "SysEnqIntRP",          "SysDeqIntRP",
 131         "get_free_EvCB_slot", "get_free_TCB_slot",      "ExceptionHandler",     "InstallExeptionHandler",
 132         "SysInitMemory",          "SysInitKMem",                "ChangeClearRCnt",      "SystemError",
 133         "InitDefInt",             "sys_c0_0d",                  "sys_c0_0e",            "sys_c0_0f",
 134 // 0x10
 135         "sys_c0_10",              "sys_c0_11",                  "InstallDevices",       "FlushStfInOutPut",
 136         "sys_c0_14",              "_cdevinput",                 "_cdevscan",            "_circgetc",
 137         "_circputc",              "ioabort",                    "sys_c0_1a",            "KernelRedirect",
 138         "PatchAOTable",
 139 };
 140
 141 //#define r0 (psxRegs.GPR.n.r0)
 142 #define at (psxRegs.GPR.n.at)
 143 #define v0 (psxRegs.GPR.n.v0)
 144 #define v1 (psxRegs.GPR.n.v1)
 145 #define a0 (psxRegs.GPR.n.a0)
 146 #define a1 (psxRegs.GPR.n.a1)
 147 #define a2 (psxRegs.GPR.n.a2)
 148 #define a3 (psxRegs.GPR.n.a3)
 149 #define t0 (psxRegs.GPR.n.t0)
 150 #define t1 (psxRegs.GPR.n.t1)
 151 #define t2 (psxRegs.GPR.n.t2)
 152 #define t3 (psxRegs.GPR.n.t3)
 153 #define t4 (psxRegs.GPR.n.t4)
 154 #define t5 (psxRegs.GPR.n.t5)
 155 #define t6 (psxRegs.GPR.n.t6)
 156 #define t7 (psxRegs.GPR.n.t7)
 157 #define t8 (psxRegs.GPR.n.t8)
 158 #define t9 (psxRegs.GPR.n.t9)
 159 #define s0 (psxRegs.GPR.n.s0)
 160 #define s1 (psxRegs.GPR.n.s1)
 161 #define s2 (psxRegs.GPR.n.s2)
 162 #define s3 (psxRegs.GPR.n.s3)
 163 #define s4 (psxRegs.GPR.n.s4)
 164 #define s5 (psxRegs.GPR.n.s5)
 165 #define s6 (psxRegs.GPR.n.s6)
 166 #define s7 (psxRegs.GPR.n.s7)
 167 #define k0 (psxRegs.GPR.n.k0)
 168 #define k1 (psxRegs.GPR.n.k1)
 169 #define gp (psxRegs.GPR.n.gp)
 170 #define sp (psxRegs.GPR.n.sp)
 171 #define fp (psxRegs.GPR.n.s8)
 172 #define ra (psxRegs.GPR.n.ra)
 173 #define pc0 (psxRegs.pc)
 174
 175 #define Ra0 ((char *)PSXM(a0))
 176 #define Ra1 ((char *)PSXM(a1))
 177 #define Ra2 ((char *)PSXM(a2))
 178 #define Ra3 ((char *)PSXM(a3))
 179 #define Rv0 ((char *)PSXM(v0))
 180 #define Rsp ((char *)PSXM(sp))
 181
 182 typedef struct {
 183         u32 desc;
 184         s32 status;
 185         s32 mode;
 186         u32 fhandler;
 187 } EvCB[32];
 188
 189 #define EvStUNUSED      0x0000
 190 #define EvStWAIT        0x1000
 191 #define EvStACTIVE      0x2000
 192 #define EvStALREADY 0x4000
 193
 194 #define EvMdINTR        0x1000
 195 #define EvMdNOINTR      0x2000
 196
 197 /*
 198 typedef struct {
 199         s32 next;
 200         s32 func1;
 201         s32 func2;
 202         s32 pad;
 203 } SysRPst;
 204 */
 205
 206 typedef struct {
 207         s32 status;
 208         s32 mode;
 209         u32 reg[32];
 210         u32 func;
 211 } TCB;
 212
 213 typedef struct {
 214         u32 _pc0;
 215         u32 gp0;
 216         u32 t_addr;
 217         u32 t_size;
 218         u32 d_addr;
 219         u32 d_size;
 220         u32 b_addr;
 221         u32 b_size;
 222         u32 S_addr;
 223         u32 s_size;
 224         u32 _sp, _fp, _gp, ret, base;
 225 } EXEC;
 226
 227 struct DIRENTRY {
 228         char name[20];
 229         s32 attr;
 230         s32 size;
 231         u32 next;
 232         s32 head;
 233         char system[4];
 234 };
 235
 236 typedef struct {
 237         char name[32];
 238         u32  mode;
 239         u32  offset;
 240         u32  size;
 241         u32  mcfile;
 242 } FileDesc;
 243
 244 static u32 *jmp_int = NULL;
 245 static int *pad_buf = NULL;
 246 static char *pad_buf1 = NULL, *pad_buf2 = NULL;
 247 static int pad_buf1len, pad_buf2len;
 248
 249 static u32 regs[35];
 250 static EvCB *Event;
 251 static EvCB *HwEV; // 0xf0
 252 static EvCB *EvEV; // 0xf1
 253 static EvCB *RcEV; // 0xf2
 254 static EvCB *UeEV; // 0xf3
 255 static EvCB *SwEV; // 0xf4
 256 static EvCB *ThEV; // 0xff
 257 static u32 heap_size = 0;
 258 static u32 *heap_addr = NULL;
 259 static u32 *heap_end = NULL;
 260 static u32 SysIntRP[8];
 261 static int CardState = -1;
 262 static TCB Thread[8];
 263 static int CurThread = 0;
 264 static FileDesc FDesc[32];
 265 static u32 card_active_chan;
 266
 267 boolean hleSoftCall = FALSE;
 268
 269 static inline void softCall(u32 pc) {
 270         pc0 = pc;
 271         ra = 0x80001000;
 272
 273         hleSoftCall = TRUE;
 274
 275         while (pc0 != 0x80001000) psxCpu->ExecuteBlock();
 276
 277         hleSoftCall = FALSE;
 278 }
 279
 280 static inline void softCall2(u32 pc) {
 281         u32 sra = ra;
 282         pc0 = pc;
 283         ra = 0x80001000;
 284
 285         hleSoftCall = TRUE;
 286
 287         while (pc0 != 0x80001000) psxCpu->ExecuteBlock();
 288         ra = sra;
 289
 290         hleSoftCall = FALSE;
 291 }
 292
 293 static inline void DeliverEvent(u32 ev, u32 spec) {
 294         if (Event[ev][spec].status != EvStACTIVE) return;
 295
 296 //      Event[ev][spec].status = EvStALREADY;
 297         if (Event[ev][spec].mode == EvMdINTR) {
 298                 softCall2(Event[ev][spec].fhandler);
 299         } else Event[ev][spec].status = EvStALREADY;
 300 }
 301
 302 static inline void SaveRegs() {
 303         memcpy(regs, psxRegs.GPR.r, 32*4);
 304         regs[32] = psxRegs.GPR.n.lo;
 305         regs[33] = psxRegs.GPR.n.hi;
 306         regs[34] = psxRegs.pc;
 307 }
 308
 309 static inline void LoadRegs() {
 310         memcpy(psxRegs.GPR.r, regs, 32*4);
 311         psxRegs.GPR.n.lo = regs[32];
 312         psxRegs.GPR.n.hi = regs[33];
 313 }
 314
 315 /*                                           *
 316 //                                           *
 317 //                                           *
 318 //               System calls A0             */
 319
 320
 321 #define buread(Ra1, mcd, length) { \
 322         SysPrintf("read %d: %x,%x (%s)\n", FDesc[1 + mcd].mcfile, FDesc[1 + mcd].offset, a2, Mcd##mcd##Data + 128 * FDesc[1 + mcd].mcfile + 0xa); \
 323         ptr = Mcd##mcd##Data + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
 324         memcpy(Ra1, ptr, length); \
 325         DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 326         DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
 327         if (FDesc[1 + mcd].mode & 0x8000) v0 = 0; \
 328         else v0 = length; \
 329         FDesc[1 + mcd].offset += v0; \
 330 }
 331
 332 #define buwrite(Ra1, mcd, length) { \
 333         u32 offset =  + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
 334         SysPrintf("write %d: %x,%x\n", FDesc[1 + mcd].mcfile, FDesc[1 + mcd].offset, a2); \
 335         ptr = Mcd##mcd##Data + offset; \
 336         memcpy(ptr, Ra1, length); \
 337         DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 338         DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
 339         FDesc[1 + mcd].offset += length; \
 340         if (FDesc[1 + mcd].mode & 0x8000) v0 = 0; \
 341         else v0 = length; \
 342 }
 343
 344
 345 /* Internally redirects to "FileRead(fd,tempbuf,1)".*/
 346 /* For some strange reason, the returned character is sign-expanded; */
 347 /* So if a return value of FFFFFFFFh could mean either character FFh, or error. */
 348 /* TODO FIX ME : Properly implement this behaviour */
 349 void psxBios_getc(void) // 0x03, 0x35
 350 {
 351         char *ptr;
 352         void *pa1 = Ra1;
 353 #ifdef PSXBIOS_LOG
 354         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x03]);
 355 #endif
 356         v0 = -1;
 357
 358         if (pa1) {
 359                 switch (a0) {
 360                         case 2: buread(pa1, 1, 1); break;
 361                         case 3: buread(pa1, 2, 1); break;
 362                 }
 363         }
 364
 365         pc0 = ra;
 366 }
 367
 368 /* Copy of psxBios_write, except size is 1. */
 369 void psxBios_putc(void) // 0x09, 0x3B
 370 {
 371         char *ptr;
 372         void *pa1 = Ra1;
 373 #ifdef PSXBIOS_LOG
 374         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x09]);
 375 #endif
 376         v0 = -1;
 377         if (!pa1) {
 378                 pc0 = ra;
 379                 return;
 380         }
 381
 382         if (a0 == 1) { // stdout
 383                 char *ptr = (char *)pa1;
 384
 385                 v0 = a2;
 386                 while (a2 > 0) {
 387                         printf("%c", *ptr++); a2--;
 388                 }
 389                 pc0 = ra; return;
 390         }
 391
 392         switch (a0) {
 393                 case 2: buwrite(pa1, 1, 1); break;
 394                 case 3: buwrite(pa1, 2, 1); break;
 395         }
 396
 397         pc0 = ra;
 398 }
 399
 400 void psxBios_todigit(void) // 0x0a
 401 {
 402         int c = a0;
 403 #ifdef PSXBIOS_LOG
 404         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x0a]);
 405 #endif
 406         c &= 0xFF;
 407         if (c >= 0x30 && c < 0x3A) {
 408                 c -= 0x30;
 409         }
 410         else if (c > 0x60 && c < 0x7B) {
 411                 c -= 0x20;
 412         }
 413         else if (c > 0x40 && c < 0x5B) {
 414                 c = c - 0x41 + 10;
 415         }
 416         else if (c >= 0x80) {
 417                 c = -1;
 418         }
 419         else
 420         {
 421                 c = 0x0098967F;
 422         }
 423         v0 = c;
 424         pc0 = ra;
 425 }
 426
 427 void psxBios_abs() { // 0x0e
 428         if ((s32)a0 < 0) v0 = -(s32)a0;
 429         else v0 = a0;
 430         pc0 = ra;
 431 }
 432
 433 void psxBios_labs() { // 0x0f
 434         psxBios_abs();
 435 }
 436
 437 void psxBios_atoi() { // 0x10
 438         s32 n = 0, f = 0;
 439         char *p = (char *)Ra0;
 440
 441         for (;;p++) {
 442                 switch (*p) {
 443                         case ' ': case '\t': continue;
 444                         case '-': f++;
 445                         case '+': p++;
 446                 }
 447                 break;
 448         }
 449
 450         while (*p >= '0' && *p <= '9') {
 451                 n = n * 10 + *p++ - '0';
 452         }
 453
 454         v0 = (f ? -n : n);
 455         pc0 = ra;
 456 }
 457
 458 void psxBios_atol() { // 0x11
 459         psxBios_atoi();
 460 }
 461
 462 void psxBios_setjmp() { // 0x13
 463         u32 *jmp_buf = (u32 *)Ra0;
 464         int i;
 465
 466 #ifdef PSXBIOS_LOG
 467         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x13]);
 468 #endif
 469
 470         jmp_buf[0] = ra;
 471         jmp_buf[1] = sp;
 472         jmp_buf[2] = fp;
 473         for (i = 0; i < 8; i++) // s0-s7
 474                 jmp_buf[3 + i] = psxRegs.GPR.r[16 + i];
 475         jmp_buf[11] = gp;
 476
 477         v0 = 0; pc0 = ra;
 478 }
 479
 480 void psxBios_longjmp() { // 0x14
 481         u32 *jmp_buf = (u32 *)Ra0;
 482         int i;
 483
 484 #ifdef PSXBIOS_LOG
 485         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x14]);
 486 #endif
 487
 488         ra = jmp_buf[0]; /* ra */
 489         sp = jmp_buf[1]; /* sp */
 490         fp = jmp_buf[2]; /* fp */
 491         for (i = 0; i < 8; i++) // s0-s7
 492                 psxRegs.GPR.r[16 + i] = jmp_buf[3 + i];
 493         gp = jmp_buf[11]; /* gp */
 494
 495         v0 = a1; pc0 = ra;
 496 }
 497
 498 void psxBios_strcat() { // 0x15
 499         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 500
 501 #ifdef PSXBIOS_LOG
 502         PSXBIOS_LOG("psxBios_%s: %s, %s\n", biosA0n[0x15], Ra0, Ra1);
 503 #endif
 504         if (a0 == 0 || a1 == 0)
 505         {
 506                 v0 = 0;
 507                 pc0 = ra;
 508                 return;
 509         }
 510         while (*p1++);
 511         --p1;
 512         while ((*p1++ = *p2++) != '\0');
 513
 514         v0 = a0; pc0 = ra;
 515 }
 516
 517 void psxBios_strncat() { // 0x16
 518         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 519         s32 n = a2;
 520
 521 #ifdef PSXBIOS_LOG
 522         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x16], Ra0, a0, Ra1, a1, a2);
 523 #endif
 524         if (a0 == 0 || a1 == 0)
 525         {
 526                 v0 = 0;
 527                 pc0 = ra;
 528                 return;
 529         }
 530         while (*p1++);
 531         --p1;
 532         while ((*p1++ = *p2++) != '\0') {
 533                 if (--n < 0) {
 534                         *--p1 = '\0';
 535                         break;
 536                 }
 537         }
 538
 539         v0 = a0; pc0 = ra;
 540 }
 541
 542 void psxBios_strcmp() { // 0x17
 543         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 544
 545 #ifdef PSXBIOS_LOG
 546         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x)\n", biosA0n[0x17], Ra0, a0, Ra1, a1);
 547 #endif
 548
 549         while (*p1 == *p2++) {
 550                 if (*p1++ == '\0') {
 551                         v0 = 0;
 552                         pc0 = ra;
 553                         return;
 554                 }
 555         }
 556
 557         v0 = (*p1 - *--p2);
 558         pc0 = ra;
 559 }
 560
 561 void psxBios_strncmp() { // 0x18
 562         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 563         s32 n = a2;
 564
 565 #ifdef PSXBIOS_LOG
 566         PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x18], Ra0, a0, Ra1, a1, a2);
 567 #endif
 568
 569         while (--n >= 0 && *p1 == *p2++) {
 570                 if (*p1++ == '\0') {
 571                         v0 = 0;
 572                         pc0 = ra;
 573                         return;
 574                 }
 575         }
 576
 577         v0 = (n < 0 ? 0 : *p1 - *--p2);
 578         pc0 = ra;
 579 }
 580
 581 void psxBios_strcpy() { // 0x19
 582         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 583         while ((*p1++ = *p2++) != '\0');
 584
 585         v0 = a0; pc0 = ra;
 586 }
 587
 588 void psxBios_strncpy() { // 0x1a
 589         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 590         s32 n = a2, i;
 591
 592         for (i = 0; i < n; i++) {
 593                 if ((*p1++ = *p2++) == '\0') {
 594                         while (++i < n) {
 595                                 *p1++ = '\0';
 596                         }
 597                         v0 = a0; pc0 = ra;
 598                         return;
 599                 }
 600         }
 601
 602         v0 = a0; pc0 = ra;
 603 }
 604
 605 void psxBios_strlen() { // 0x1b
 606         char *p = (char *)Ra0;
 607         v0 = 0;
 608         while (*p++) v0++;
 609         pc0 = ra;
 610 }
 611
 612 void psxBios_index() { // 0x1c
 613         char *p = (char *)Ra0;
 614         if (a0 == 0)
 615         {
 616                 v0 = 0;
 617                 pc0 = ra;
 618                 return;
 619         }
 620
 621         do {
 622                 if (*p == a1) {
 623                         v0 = a0 + (p - (char *)Ra0);
 624                         pc0 = ra;
 625                         return;
 626                 }
 627         } while (*p++ != '\0');
 628
 629         v0 = 0; pc0 = ra;
 630 }
 631
 632 void psxBios_rindex() { // 0x1d
 633         char *p = (char *)Ra0;
 634
 635         v0 = 0;
 636         if (a0 == 0)
 637         {
 638                 pc0 = ra;
 639                 return;
 640         }
 641         do {
 642                 if (*p == a1)
 643                         v0 = a0 + (p - (char *)Ra0);
 644         } while (*p++ != '\0');
 645
 646         pc0 = ra;
 647 }
 648
 649 void psxBios_strchr() { // 0x1e
 650         psxBios_index();
 651 }
 652
 653 void psxBios_strrchr() { // 0x1f
 654         psxBios_rindex();
 655 }
 656
 657 void psxBios_strpbrk() { // 0x20
 658         char *p1 = (char *)Ra0, *p2 = (char *)Ra1, *scanp, c, sc;
 659
 660         while ((c = *p1++) != '\0') {
 661                 for (scanp = p2; (sc = *scanp++) != '\0';) {
 662                         if (sc == c) {
 663                                 v0 = a0 + (p1 - 1 - (char *)Ra0);
 664                                 pc0 = ra;
 665                                 return;
 666                         }
 667                 }
 668         }
 669
 670         // BUG: return a0 instead of NULL if not found
 671         v0 = a0; pc0 = ra;
 672 }
 673
 674 void psxBios_strspn() { // 0x21
 675         char *p1, *p2;
 676
 677         for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
 678                 for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
 679                 if (*p2 == '\0') break;
 680         }
 681
 682         v0 = p1 - (char *)Ra0; pc0 = ra;
 683 }
 684
 685 void psxBios_strcspn() { // 0x22
 686         char *p1, *p2;
 687
 688         for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
 689                 for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
 690                 if (*p2 != '\0') break;
 691         }
 692
 693         v0 = p1 - (char *)Ra0; pc0 = ra;
 694 }
 695
 696 void psxBios_strtok() { // 0x23
 697         char *pcA0 = (char *)Ra0;
 698         char *pcRet = strtok(pcA0, (char *)Ra1);
 699         if (pcRet)
 700                 v0 = a0 + pcRet - pcA0;
 701         else
 702                 v0 = 0;
 703         pc0 = ra;
 704 }
 705
 706 void psxBios_strstr() { // 0x24
 707         char *p = (char *)Ra0, *p1, *p2;
 708
 709         while (*p != '\0') {
 710                 p1 = p;
 711                 p2 = (char *)Ra1;
 712
 713                 while (*p1 != '\0' && *p2 != '\0' && *p1 == *p2) {
 714                         p1++; p2++;
 715                 }
 716
 717                 if (*p2 == '\0') {
 718                         v0 = a0 + (p - (char *)Ra0);
 719                         pc0 = ra;
 720                         return;
 721                 }
 722
 723                 p++;
 724         }
 725
 726         v0 = 0; pc0 = ra;
 727 }
 728
 729 void psxBios_toupper() { // 0x25
 730         v0 = (s8)(a0 & 0xff);
 731         if (v0 >= 'a' && v0 <= 'z') v0 -= 'a' - 'A';
 732         pc0 = ra;
 733 }
 734
 735 void psxBios_tolower() { // 0x26
 736         v0 = (s8)(a0 & 0xff);
 737         if (v0 >= 'A' && v0 <= 'Z') v0 += 'a' - 'A';
 738         pc0 = ra;
 739 }
 740
 741 void psxBios_bcopy() { // 0x27
 742         char *p1 = (char *)Ra1, *p2 = (char *)Ra0;
 743         v0 = a0;
 744         if (a0 == 0 || a2 > 0x7FFFFFFF)
 745         {
 746                 pc0 = ra;
 747                 return;
 748         }
 749         while ((s32)a2-- > 0) *p1++ = *p2++;
 750         a2 = 0;
 751         pc0 = ra;
 752 }
 753
 754 void psxBios_bzero() { // 0x28
 755         char *p = (char *)Ra0;
 756         v0 = a0;
 757         /* Same as memset here (See memset below) */
 758         if (a1 > 0x7FFFFFFF || a1 == 0)
 759         {
 760                 v0 = 0;
 761                 pc0 = ra;
 762                 return;
 763         }
 764         else if (a0 == 0)
 765         {
 766                 pc0 = ra;
 767                 return;
 768         }
 769         while ((s32)a1-- > 0) *p++ = '\0';
 770         a1 = 0;
 771         pc0 = ra;
 772 }
 773
 774 void psxBios_bcmp() { // 0x29
 775         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 776
 777         if (a0 == 0 || a1 == 0) { v0 = 0; pc0 = ra; return; }
 778
 779         while ((s32)a2-- > 0) {
 780                 if (*p1++ != *p2++) {
 781                         v0 = *p1 - *p2; // BUG: compare the NEXT byte
 782                         pc0 = ra;
 783                         return;
 784                 }
 785         }
 786
 787         v0 = 0; pc0 = ra;
 788 }
 789
 790 void psxBios_memcpy() { // 0x2a
 791         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 792         s32 n=0;
 793         v0 = a0;
 794         if (a0 == 0 || a2 > 0x7FFFFFFF)
 795         {
 796                 pc0 = ra;
 797                 return;
 798         }
 799         while ((s32)a2-- > 0) {
 800                 n++;
 801                 *p1++ = *p2++;
 802         }
 803         a2 = 0;
 804         pc0 = ra;
 805 }
 806
 807 void psxBios_memset() { // 0x2b
 808         char *p = (char *)Ra0;
 809         v0 = a0;
 810         if (a2 > 0x7FFFFFFF || a2 == 0)
 811         {
 812                 v0 = 0;
 813                 pc0 = ra;
 814                 return;
 815         }
 816         if (a0 == 0)
 817         {
 818                 pc0 = ra;
 819                 return;
 820         }
 821         while ((s32)a2-- > 0) *p++ = (char)a1;
 822         a2 = 0;
 823         v0 = a0; pc0 = ra;
 824 }
 825
 826 void psxBios_memmove() { // 0x2c
 827         char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
 828         v0 = a0;
 829         if (a0 == 0 || a2 > 0x7FFFFFFF)
 830         {
 831                 pc0 = ra;
 832                 return;
 833         }
 834         if (p2 <= p1 && p2 + a2 > p1) {
 835                 a2++; // BUG: copy one more byte here
 836                 p1 += a2;
 837                 p2 += a2;
 838                 while ((s32)a2-- > 0) *--p1 = *--p2;
 839         } else {
 840                 while ((s32)a2-- > 0) *p1++ = *p2++;
 841         }
 842         pc0 = ra;
 843 }
 844
 845 void psxBios_memcmp() { // 0x2d
 846         psxBios_bcmp();
 847 }
 848
 849 void psxBios_memchr() { // 0x2e
 850         char *p = (char *)Ra0;
 851
 852         while ((s32)a2-- > 0) {
 853                 if (*p++ != (s8)a1) continue;
 854                 v0 = a0 + (p - (char *)Ra0 - 1);
 855                 pc0 = ra;
 856                 return;
 857         }
 858
 859         v0 = 0; pc0 = ra;
 860 }
 861
 862 void psxBios_rand() { // 0x2f
 863         u32 s = psxMu32(0x9010) * 1103515245 + 12345;
 864         v0 = (s >> 16) & 0x7fff;
 865         psxMu32ref(0x9010) = SWAPu32(s);
 866         pc0 = ra;
 867 }
 868
 869 void psxBios_srand() { // 0x30
 870         psxMu32ref(0x9010) = SWAPu32(a0);
 871         pc0 = ra;
 872 }
 873
 874 static u32 qscmpfunc, qswidth;
 875
 876 static inline int qscmp(char *a, char *b) {
 877         u32 sa0 = a0;
 878
 879         a0 = sa0 + (a - (char *)PSXM(sa0));
 880         a1 = sa0 + (b - (char *)PSXM(sa0));
 881
 882         softCall2(qscmpfunc);
 883
 884         a0 = sa0;
 885         return (s32)v0;
 886 }
 887
 888 static inline void qexchange(char *i, char *j) {
 889         char t;
 890         int n = qswidth;
 891
 892         do {
 893                 t = *i;
 894                 *i++ = *j;
 895                 *j++ = t;
 896         } while (--n);
 897 }
 898
 899 static inline void q3exchange(char *i, char *j, char *k) {
 900         char t;
 901         int n = qswidth;
 902
 903         do {
 904                 t = *i;
 905                 *i++ = *k;
 906                 *k++ = *j;
 907                 *j++ = t;
 908         } while (--n);
 909 }
 910
 911 static void qsort_main(char *a, char *l) {
 912         char *i, *j, *lp, *hp;
 913         int c;
 914         unsigned int n;
 915
 916 start:
 917         if ((n = l - a) <= qswidth)
 918                 return;
 919         n = qswidth * (n / (2 * qswidth));
 920         hp = lp = a + n;
 921         i = a;
 922         j = l - qswidth;
 923         while (TRUE) {
 924                 if (i < lp) {
 925                         if ((c = qscmp(i, lp)) == 0) {
 926                                 qexchange(i, lp -= qswidth);
 927                                 continue;
 928                         }
 929                         if (c < 0) {
 930                                 i += qswidth;
 931                                 continue;
 932                         }
 933                 }
 934
 935 loop:
 936                 if (j > hp) {
 937                         if ((c = qscmp(hp, j)) == 0) {
 938                                 qexchange(hp += qswidth, j);
 939                                 goto loop;
 940                         }
 941                         if (c > 0) {
 942                                 if (i == lp) {
 943                                         q3exchange(i, hp += qswidth, j);
 944                                         i = lp += qswidth;
 945                                         goto loop;
 946                                 }
 947                                 qexchange(i, j);
 948                                 j -= qswidth;
 949                                 i += qswidth;
 950                                 continue;
 951                         }
 952                         j -= qswidth;
 953                         goto loop;
 954                 }
 955
 956                 if (i == lp) {
 957                         if (lp - a >= l - hp) {
 958                                 qsort_main(hp + qswidth, l);
 959                                 l = lp;
 960                         } else {
 961                                 qsort_main(a, lp);
 962                                 a = hp + qswidth;
 963                         }
 964                         goto start;
 965                 }
 966
 967                 q3exchange(j, lp -= qswidth, i);
 968                 j = hp -= qswidth;
 969         }
 970 }
 971
 972 void psxBios_qsort() { // 0x31
 973         qswidth = a2;
 974         qscmpfunc = a3;
 975         qsort_main((char *)Ra0, (char *)Ra0 + a1 * a2);
 976
 977         pc0 = ra;
 978 }
 979
 980 void psxBios_malloc() { // 0x33
 981         unsigned int *chunk, *newchunk = NULL;
 982         unsigned int dsize = 0, csize, cstat;
 983         int colflag;
 984 #ifdef PSXBIOS_LOG
 985         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x33]);
 986 #endif
 987         if (!a0 || (!heap_size || !heap_addr)) {
 988                 v0 = 0;
 989                 pc0 = ra;
 990                 return;
 991         }
 992
 993         // scan through heap and combine free chunks of space
 994         chunk = heap_addr;
 995         colflag = 0;
 996         while(chunk < heap_end) {
 997                 // get size and status of actual chunk
 998                 csize = ((u32)*chunk) & 0xfffffffc;
 999                 cstat = ((u32)*chunk) & 1;
1000
1001                 // most probably broken heap descriptor
1002                 // this fixes Burning Road
1003                 if (*chunk == 0) {
1004                         newchunk = chunk;
1005                         dsize = ((uptr)heap_end - (uptr)chunk) - 4;
1006                         colflag = 1;
1007                         break;
1008                 }
1009
1010                 // it's a free chunk
1011                 if(cstat == 1) {
1012                         if(colflag == 0) {
1013                                 newchunk = chunk;
1014                                 dsize = csize;
1015                                 colflag = 1;                    // let's begin a new collection of free memory
1016                         }
1017                         else dsize += (csize+4);        // add the new size including header
1018                 }
1019                 // not a free chunk: did we start a collection ?
1020                 else {
1021                         if(colflag == 1) {                      // collection is over
1022                                 colflag = 0;
1023                                 *newchunk = SWAP32(dsize | 1);
1024                         }
1025                 }
1026
1027                 // next chunk
1028                 chunk = (u32*)((uptr)chunk + csize + 4);
1029         }
1030         // if neccessary free memory on end of heap
1031         if (colflag == 1)
1032                 *newchunk = SWAP32(dsize | 1);
1033
1034         chunk = heap_addr;
1035         csize = ((u32)*chunk) & 0xfffffffc;
1036         cstat = ((u32)*chunk) & 1;
1037         dsize = (a0 + 3) & 0xfffffffc;
1038
1039         // exit on uninitialized heap
1040         if (chunk == NULL) {
1041                 printf("malloc %x,%x: Uninitialized Heap!\n", v0, a0);
1042                 v0 = 0;
1043                 pc0 = ra;
1044                 return;
1045         }
1046
1047         // search an unused chunk that is big enough until the end of the heap
1048         while ((dsize > csize || cstat==0) && chunk < heap_end ) {
1049                 chunk = (u32*)((uptr)chunk + csize + 4);
1050
1051                         // catch out of memory
1052                         if(chunk >= heap_end) {
1053                                 printf("malloc %x,%x: Out of memory error!\n",
1054                                         v0, a0);
1055                                 v0 = 0; pc0 = ra;
1056                                 return;
1057                         }
1058
1059                 csize = ((u32)*chunk) & 0xfffffffc;
1060                 cstat = ((u32)*chunk) & 1;
1061         }
1062
1063         // allocate memory
1064         if(dsize == csize) {
1065                 // chunk has same size
1066                 *chunk &= 0xfffffffc;
1067         } else if (dsize > csize) {
1068                 v0 = 0; pc0 = ra;
1069                 return;
1070         } else {
1071                 // split free chunk
1072                 *chunk = SWAP32(dsize);
1073                 newchunk = (u32*)((uptr)chunk + dsize + 4);
1074                 *newchunk = SWAP32(((csize - dsize - 4) & 0xfffffffc) | 1);
1075         }
1076
1077         // return pointer to allocated memory
1078         v0 = ((uptr)chunk - (uptr)psxM) + 4;
1079         v0|= 0x80000000;
1080         //printf ("malloc %x,%x\n", v0, a0);
1081         pc0 = ra;
1082 }
1083
1084 void psxBios_free() { // 0x34
1085
1086 #ifdef PSXBIOS_LOG
1087         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x34]);
1088 #endif
1089
1090         SysPrintf("free %x: %x bytes\n", a0, *(u32*)(Ra0-4));
1091
1092         *(u32*)(Ra0-4) |= 1;    // set chunk to free
1093         pc0 = ra;
1094 }
1095
1096 void psxBios_calloc() { // 0x37
1097         void *pv0;
1098 #ifdef PSXBIOS_LOG
1099         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x37]);
1100 #endif
1101
1102         a0 = a0 * a1;
1103         psxBios_malloc();
1104         pv0 = Rv0;
1105         if (pv0)
1106                 memset(pv0, 0, a0);
1107 }
1108
1109 void psxBios_realloc() { // 0x38
1110         u32 block = a0;
1111         u32 size = a1;
1112 #ifdef PSXBIOS_LOG
1113         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x38]);
1114 #endif
1115
1116         a0 = block;
1117         /* If "old_buf" is zero, executes malloc(new_size), and returns r2=new_buf (or 0=failed). */
1118         if (block == 0)
1119         {
1120                 psxBios_malloc();
1121         }
1122         /* Else, if "new_size" is zero, executes free(old_buf), and returns r2=garbage. */
1123         else if (size == 0)
1124         {
1125                 psxBios_free();
1126         }
1127         /* Else, executes malloc(new_size), bcopy(old_buf,new_buf,new_size), and free(old_buf), and returns r2=new_buf (or 0=failed). */
1128         /* Note that it is not quite implemented this way here. */
1129         else
1130         {
1131                 psxBios_free();
1132                 a0 = size;
1133                 psxBios_malloc();
1134         }
1135 }
1136
1137
1138 /* InitHeap(void *block , int n) */
1139 void psxBios_InitHeap() { // 0x39
1140         unsigned int size;
1141
1142 #ifdef PSXBIOS_LOG
1143         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x39]);
1144 #endif
1145
1146         if (((a0 & 0x1fffff) + a1)>= 0x200000) size = 0x1ffffc - (a0 & 0x1fffff);
1147         else size = a1;
1148
1149         size &= 0xfffffffc;
1150
1151         heap_addr = (u32 *)Ra0;
1152         heap_end = (u32 *)((u8 *)heap_addr + size);
1153         *heap_addr = SWAP32(size | 1);
1154
1155         SysPrintf("InitHeap %x,%x : %x %x\n",a0,a1, (int)((uptr)heap_addr-(uptr)psxM), size);
1156
1157         pc0 = ra;
1158 }
1159
1160 void psxBios_getchar() { //0x3b
1161         v0 = getchar(); pc0 = ra;
1162 }
1163
1164 void psxBios_printf() { // 0x3f
1165         char tmp[1024];
1166         char tmp2[1024];
1167         u32 save[4];
1168         char *ptmp = tmp;
1169         int n=1, i=0, j;
1170         void *psp;
1171
1172         psp = PSXM(sp);
1173         if (psp) {
1174                 memcpy(save, psp, 4 * 4);
1175                 psxMu32ref(sp) = SWAP32((u32)a0);
1176                 psxMu32ref(sp + 4) = SWAP32((u32)a1);
1177                 psxMu32ref(sp + 8) = SWAP32((u32)a2);
1178                 psxMu32ref(sp + 12) = SWAP32((u32)a3);
1179         }
1180
1181         while (Ra0[i]) {
1182                 switch (Ra0[i]) {
1183                         case '%':
1184                                 j = 0;
1185                                 tmp2[j++] = '%';
1186 _start:
1187                                 switch (Ra0[++i]) {
1188                                         case '.':
1189                                         case 'l':
1190                                                 tmp2[j++] = Ra0[i]; goto _start;
1191                                         default:
1192                                                 if (Ra0[i] >= '0' && Ra0[i] <= '9') {
1193                                                         tmp2[j++] = Ra0[i];
1194                                                         goto _start;
1195                                                 }
1196                                                 break;
1197                                 }
1198                                 tmp2[j++] = Ra0[i];
1199                                 tmp2[j] = 0;
1200
1201                                 switch (Ra0[i]) {
1202                                         case 'f': case 'F':
1203                                                 ptmp += sprintf(ptmp, tmp2, (float)psxMu32(sp + n * 4)); n++; break;
1204                                         case 'a': case 'A':
1205                                         case 'e': case 'E':
1206                                         case 'g': case 'G':
1207                                                 ptmp += sprintf(ptmp, tmp2, (double)psxMu32(sp + n * 4)); n++; break;
1208                                         case 'p':
1209                                         case 'i': case 'u':
1210                                         case 'd': case 'D':
1211                                         case 'o': case 'O':
1212                                         case 'x': case 'X':
1213                                                 ptmp += sprintf(ptmp, tmp2, (unsigned int)psxMu32(sp + n * 4)); n++; break;
1214                                         case 'c':
1215                                                 ptmp += sprintf(ptmp, tmp2, (unsigned char)psxMu32(sp + n * 4)); n++; break;
1216                                         case 's':
1217                                                 ptmp += sprintf(ptmp, tmp2, (char*)PSXM(psxMu32(sp + n * 4))); n++; break;
1218                                         case '%':
1219                                                 *ptmp++ = Ra0[i]; break;
1220                                 }
1221                                 i++;
1222                                 break;
1223                         default:
1224                                 *ptmp++ = Ra0[i++];
1225                 }
1226         }
1227         *ptmp = 0;
1228
1229         if (psp)
1230                 memcpy(psp, save, 4 * 4);
1231
1232         SysPrintf("%s", tmp);
1233
1234         pc0 = ra;
1235 }
1236
1237 void psxBios_format() { // 0x41
1238         if (strcmp(Ra0, "bu00:") == 0 && Config.Mcd1[0] != '\0')
1239         {
1240                 CreateMcd(Config.Mcd1);
1241                 LoadMcd(1, Config.Mcd1);
1242                 v0 = 1;
1243         }
1244         else if (strcmp(Ra0, "bu10:") == 0 && Config.Mcd2[0] != '\0')
1245         {
1246                 CreateMcd(Config.Mcd2);
1247                 LoadMcd(2, Config.Mcd2);
1248                 v0 = 1;
1249         }
1250         else
1251         {
1252                 v0 = 0;
1253         }
1254         pc0 = ra;
1255 }
1256
1257 /*
1258  *      long Load(char *name, struct EXEC *header);
1259  */
1260
1261 void psxBios_Load() { // 0x42
1262         EXE_HEADER eheader;
1263         void *pa1;
1264
1265 #ifdef PSXBIOS_LOG
1266         PSXBIOS_LOG("psxBios_%s: %s, %x\n", biosA0n[0x42], Ra0, a1);
1267 #endif
1268
1269         pa1 = Ra1;
1270         if (pa1 && LoadCdromFile(Ra0, &eheader) == 0) {
1271                 memcpy(pa1, ((char*)&eheader)+16, sizeof(EXEC));
1272                 v0 = 1;
1273         } else v0 = 0;
1274
1275         pc0 = ra;
1276 }
1277
1278 /*
1279  *      int Exec(struct EXEC *header , int argc , char **argv);
1280  */
1281
1282 void psxBios_Exec() { // 43
1283         EXEC *header = (EXEC*)Ra0;
1284         u32 tmp;
1285
1286 #ifdef PSXBIOS_LOG
1287         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosA0n[0x43], a0, a1, a2);
1288 #endif
1289
1290         header->_sp = sp;
1291         header->_fp = fp;
1292         header->_sp = sp;
1293         header->_gp = gp;
1294         header->ret = ra;
1295         header->base = s0;
1296
1297         if (header->S_addr != 0) {
1298                 tmp = header->S_addr + header->s_size;
1299                 sp = tmp;
1300                 fp = sp;
1301         }
1302
1303         gp = header->gp0;
1304
1305         s0 = a0;
1306
1307         a0 = a1;
1308         a1 = a2;
1309
1310         ra = 0x8000;
1311         pc0 = header->_pc0;
1312 }
1313
1314 void psxBios_FlushCache() { // 44
1315 #ifdef PSXBIOS_LOG
1316         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x44]);
1317 #endif
1318
1319         pc0 = ra;
1320 }
1321
1322 void psxBios_GPU_dw() { // 0x46
1323         int size;
1324         s32 *ptr;
1325
1326 #ifdef PSXBIOS_LOG
1327         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x46]);
1328 #endif
1329
1330         GPU_writeData(0xa0000000);
1331         GPU_writeData((a1<<16)|(a0&0xffff));
1332         GPU_writeData((a3<<16)|(a2&0xffff));
1333         size = (a2*a3+1)/2;
1334         ptr = (s32*)PSXM(Rsp[4]);  //that is correct?
1335         do {
1336                 GPU_writeData(SWAP32(*ptr));
1337                 ptr++;
1338         } while(--size);
1339
1340         pc0 = ra;
1341 }
1342
1343 void psxBios_mem2vram() { // 0x47
1344         int size;
1345
1346         GPU_writeData(0xa0000000);
1347         GPU_writeData((a1<<16)|(a0&0xffff));
1348         GPU_writeData((a3<<16)|(a2&0xffff));
1349         size = (a2*a3+1)/2;
1350         GPU_writeStatus(0x04000002);
1351         psxHwWrite32(0x1f8010f4,0);
1352         psxHwWrite32(0x1f8010f0,psxHwRead32(0x1f8010f0)|0x800);
1353         psxHwWrite32(0x1f8010a0,Rsp[4]);//might have a buggy...
1354         psxHwWrite32(0x1f8010a4,((size/16)<<16)|16);
1355         psxHwWrite32(0x1f8010a8,0x01000201);
1356
1357         pc0 = ra;
1358 }
1359
1360 void psxBios_SendGPU() { // 0x48
1361         GPU_writeStatus(a0);
1362         gpuSyncPluginSR();
1363         pc0 = ra;
1364 }
1365
1366 void psxBios_GPU_cw() { // 0x49
1367         GPU_writeData(a0);
1368         pc0 = ra;
1369 }
1370
1371 void psxBios_GPU_cwb() { // 0x4a
1372         s32 *ptr = (s32*)Ra0;
1373         int size = a1;
1374         while(size--) {
1375                 GPU_writeData(SWAP32(*ptr));
1376                 ptr++;
1377         }
1378
1379         pc0 = ra;
1380 }
1381
1382 void psxBios_GPU_SendPackets() { //4b:
1383         GPU_writeStatus(0x04000002);
1384         psxHwWrite32(0x1f8010f4,0);
1385         psxHwWrite32(0x1f8010f0,psxHwRead32(0x1f8010f0)|0x800);
1386         psxHwWrite32(0x1f8010a0,a0);
1387         psxHwWrite32(0x1f8010a4,0);
1388         psxHwWrite32(0x1f8010a8,0x010000401);
1389         pc0 = ra;
1390 }
1391
1392 void psxBios_sys_a0_4c() { // 0x4c GPU relate
1393         psxHwWrite32(0x1f8010a8,0x00000401);
1394         GPU_writeData(0x0400000);
1395         GPU_writeData(0x0200000);
1396         GPU_writeData(0x0100000);
1397         v0 = 0x1f801814;
1398         pc0 = ra;
1399 }
1400
1401 void psxBios_GPU_GetGPUStatus() { // 0x4d
1402         v0 = GPU_readStatus();
1403         pc0 = ra;
1404 }
1405
1406 #undef s_addr
1407
1408 void psxBios_LoadExec() { // 51
1409         EXEC *header = (EXEC*)PSXM(0xf000);
1410         u32 s_addr, s_size;
1411
1412 #ifdef PSXBIOS_LOG
1413         PSXBIOS_LOG("psxBios_%s: %s: %x,%x\n", biosA0n[0x51], Ra0, a1, a2);
1414 #endif
1415         s_addr = a1; s_size = a2;
1416
1417         a1 = 0xf000;
1418         psxBios_Load();
1419
1420         header->S_addr = s_addr;
1421         header->s_size = s_size;
1422
1423         a0 = 0xf000; a1 = 0; a2 = 0;
1424         psxBios_Exec();
1425 }
1426
1427 void psxBios__bu_init() { // 70
1428 #ifdef PSXBIOS_LOG
1429         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x70]);
1430 #endif
1431
1432         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1433         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1434
1435         pc0 = ra;
1436 }
1437
1438 void psxBios__96_init() { // 71
1439 #ifdef PSXBIOS_LOG
1440         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x71]);
1441 #endif
1442
1443         pc0 = ra;
1444 }
1445
1446 void psxBios__96_remove() { // 72
1447 #ifdef PSXBIOS_LOG
1448         PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x72]);
1449 #endif
1450
1451         pc0 = ra;
1452 }
1453
1454 void psxBios_SetMem() { // 9f
1455         u32 new = psxHu32(0x1060);
1456
1457 #ifdef PSXBIOS_LOG
1458         PSXBIOS_LOG("psxBios_%s: %x, %x\n", biosA0n[0x9f], a0, a1);
1459 #endif
1460
1461         switch(a0) {
1462                 case 2:
1463                         psxHu32ref(0x1060) = SWAP32(new);
1464                         psxMu32ref(0x060) = a0;
1465                         SysPrintf("Change effective memory : %d MBytes\n",a0);
1466                         break;
1467
1468                 case 8:
1469                         psxHu32ref(0x1060) = SWAP32(new | 0x300);
1470                         psxMu32ref(0x060) = a0;
1471                         SysPrintf("Change effective memory : %d MBytes\n",a0);
1472
1473                 default:
1474                         SysPrintf("Effective memory must be 2/8 MBytes\n");
1475                 break;
1476         }
1477
1478         pc0 = ra;
1479 }
1480
1481 void psxBios__card_info() { // ab
1482 #ifdef PSXBIOS_LOG
1483         PSXBIOS_LOG("psxBios_%s: %x\n", biosA0n[0xab], a0);
1484 #endif
1485         u32 ret;
1486         card_active_chan = a0;
1487
1488         switch (card_active_chan)
1489         {
1490         case 0x00: case 0x01: case 0x02: case 0x03:
1491                 ret = Config.Mcd1[0] ? 0x2 : 0x8;
1492                 break;
1493         case 0x10: case 0x11: case 0x12: case 0x13:
1494                 ret = Config.Mcd2[0] ? 0x2 : 0x8;
1495                 break;
1496         default:
1497 #ifdef PSXBIOS_LOG
1498                 PSXBIOS_LOG("psxBios_%s: UNKNOWN PORT 0x%x\n", biosA0n[0xab], card_active_chan);
1499 #endif
1500                 ret = 0x11;
1501                 break;
1502         }
1503
1504 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1505 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1506         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1507         DeliverEvent(0x81, ret); // 0xf4000001, 0x0004
1508
1509         v0 = 1; pc0 = ra;
1510 }
1511
1512 void psxBios__card_load() { // ac
1513 #ifdef PSXBIOS_LOG
1514         PSXBIOS_LOG("psxBios_%s: %x\n", biosA0n[0xac], a0);
1515 #endif
1516
1517         card_active_chan = a0;
1518
1519 //      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
1520         DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
1521
1522         v0 = 1; pc0 = ra;
1523 }
1524
1525 /* System calls B0 */
1526
1527 void psxBios_SetRCnt() { // 02
1528 #ifdef PSXBIOS_LOG
1529         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x02]);
1530 #endif
1531
1532         a0&= 0x3;
1533         if (a0 != 3) {
1534                 u32 mode=0;
1535
1536                 psxRcntWtarget(a0, a1);
1537                 if (a2&0x1000) mode|= 0x050; // Interrupt Mode
1538                 if (a2&0x0100) mode|= 0x008; // Count to 0xffff
1539                 if (a2&0x0010) mode|= 0x001; // Timer stop mode
1540                 if (a0 == 2) { if (a2&0x0001) mode|= 0x200; } // System Clock mode
1541                 else         { if (a2&0x0001) mode|= 0x100; } // System Clock mode
1542
1543                 psxRcntWmode(a0, mode);
1544         }
1545         pc0 = ra;
1546 }
1547
1548 void psxBios_GetRCnt() { // 03
1549 #ifdef PSXBIOS_LOG
1550         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x03]);
1551 #endif
1552
1553         a0&= 0x3;
1554         if (a0 != 3) v0 = psxRcntRcount(a0);
1555         else v0 = 0;
1556         pc0 = ra;
1557 }
1558
1559 void psxBios_StartRCnt() { // 04
1560 #ifdef PSXBIOS_LOG
1561         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x04]);
1562 #endif
1563
1564         a0&= 0x3;
1565         if (a0 != 3) psxHu32ref(0x1074)|= SWAP32((u32)((1<<(a0+4))));
1566         else psxHu32ref(0x1074)|= SWAPu32(0x1);
1567         v0 = 1; pc0 = ra;
1568 }
1569
1570 void psxBios_StopRCnt() { // 05
1571 #ifdef PSXBIOS_LOG
1572         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x05]);
1573 #endif
1574
1575         a0&= 0x3;
1576         if (a0 != 3) psxHu32ref(0x1074)&= SWAP32((u32)(~(1<<(a0+4))));
1577         else psxHu32ref(0x1074)&= SWAPu32(~0x1);
1578         pc0 = ra;
1579 }
1580
1581 void psxBios_ResetRCnt() { // 06
1582 #ifdef PSXBIOS_LOG
1583         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x06]);
1584 #endif
1585
1586         a0&= 0x3;
1587         if (a0 != 3) {
1588                 psxRcntWmode(a0, 0);
1589                 psxRcntWtarget(a0, 0);
1590                 psxRcntWcount(a0, 0);
1591         }
1592         pc0 = ra;
1593 }
1594
1595
1596 /* gets ev for use with Event */
1597 #define GetEv() \
1598         ev = (a0 >> 24) & 0xf; \
1599         if (ev == 0xf) ev = 0x5; \
1600         ev*= 32; \
1601         ev+= a0&0x1f;
1602
1603 /* gets spec for use with Event */
1604 #define GetSpec() \
1605         spec = 0; \
1606         switch (a1) { \
1607                 case 0x0301: spec = 16; break; \
1608                 case 0x0302: spec = 17; break; \
1609                 default: \
1610                         for (i=0; i<16; i++) if (a1 & (1 << i)) { spec = i; break; } \
1611                         break; \
1612         }
1613
1614 void psxBios_DeliverEvent() { // 07
1615         int ev, spec;
1616         int i;
1617
1618         GetEv();
1619         GetSpec();
1620
1621 #ifdef PSXBIOS_LOG
1622         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x07], ev, spec);
1623 #endif
1624
1625         DeliverEvent(ev, spec);
1626
1627         pc0 = ra;
1628 }
1629
1630 void psxBios_OpenEvent() { // 08
1631         int ev, spec;
1632         int i;
1633
1634         GetEv();
1635         GetSpec();
1636
1637 #ifdef PSXBIOS_LOG
1638         PSXBIOS_LOG("psxBios_%s %x,%x (class:%x, spec:%x, mode:%x, func:%x)\n", biosB0n[0x08], ev, spec, a0, a1, a2, a3);
1639 #endif
1640
1641         Event[ev][spec].status = EvStWAIT;
1642         Event[ev][spec].mode = a2;
1643         Event[ev][spec].fhandler = a3;
1644
1645         v0 = ev | (spec << 8);
1646         pc0 = ra;
1647 }
1648
1649 void psxBios_CloseEvent() { // 09
1650         int ev, spec;
1651
1652         ev   = a0 & 0xff;
1653         spec = (a0 >> 8) & 0xff;
1654
1655 #ifdef PSXBIOS_LOG
1656         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x09], ev, spec);
1657 #endif
1658
1659         Event[ev][spec].status = EvStUNUSED;
1660
1661         v0 = 1; pc0 = ra;
1662 }
1663
1664 void psxBios_WaitEvent() { // 0a
1665         int ev, spec;
1666
1667         ev   = a0 & 0xff;
1668         spec = (a0 >> 8) & 0xff;
1669 #ifdef PSXBIOS_LOG
1670         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0a], ev, spec);
1671 #endif
1672         if (Event[ev][spec].status == EvStUNUSED)
1673         {
1674                 v0 = 0;
1675                 pc0 = ra;
1676                 return;
1677         }
1678
1679         if (Event[ev][spec].status == EvStALREADY)
1680         {
1681                 /* Callback events (mode=EvMdINTR) do never set the ready flag (and thus WaitEvent would hang forever). */
1682                 if (!(Event[ev][spec].mode == EvMdINTR)) Event[ev][spec].status = EvStACTIVE;
1683                 v0 = 1;
1684                 pc0 = ra;
1685                 return;
1686         }
1687
1688         v0 = 0;
1689         pc0 = ra;
1690 }
1691
1692 void psxBios_TestEvent() { // 0b
1693         int ev, spec;
1694
1695         ev   = a0 & 0xff;
1696         spec = (a0 >> 8) & 0xff;
1697
1698         if (Event[ev][spec].status == EvStALREADY) {
1699                 Event[ev][spec].status = EvStACTIVE; v0 = 1;
1700         } else v0 = 0;
1701
1702 #ifdef PSXBIOS_LOG
1703         PSXBIOS_LOG("psxBios_%s %x,%x: %x\n", biosB0n[0x0b], ev, spec, v0);
1704 #endif
1705
1706         pc0 = ra;
1707 }
1708
1709 void psxBios_EnableEvent() { // 0c
1710         int ev, spec;
1711
1712         ev   = a0 & 0xff;
1713         spec = (a0 >> 8) & 0xff;
1714
1715 #ifdef PSXBIOS_LOG
1716         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0c], ev, spec);
1717 #endif
1718
1719         Event[ev][spec].status = EvStACTIVE;
1720
1721         v0 = 1; pc0 = ra;
1722 }
1723
1724 void psxBios_DisableEvent() { // 0d
1725         int ev, spec;
1726
1727         ev   = a0 & 0xff;
1728         spec = (a0 >> 8) & 0xff;
1729
1730 #ifdef PSXBIOS_LOG
1731         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x0d], ev, spec);
1732 #endif
1733
1734         Event[ev][spec].status = EvStWAIT;
1735
1736         v0 = 1; pc0 = ra;
1737 }
1738
1739 /*
1740  *      long OpenTh(long (*func)(), unsigned long sp, unsigned long gp);
1741  */
1742
1743 void psxBios_OpenTh() { // 0e
1744         int th;
1745
1746         for (th=1; th<8; th++)
1747         {
1748                 if (Thread[th].status == 0) break;
1749
1750         }
1751         if (th == 8) {
1752                 // Feb 2019 - Added out-of-bounds fix caught by cppcheck:
1753                 // When no free TCB is found, return 0xffffffff according to Nocash doc.
1754 #ifdef PSXBIOS_LOG
1755                 PSXBIOS_LOG("\t%s() WARNING! No Free TCBs found!\n", __func__);
1756 #endif
1757                 v0 = 0xffffffff;
1758                 pc0 = ra;
1759                 return;
1760         }
1761 #ifdef PSXBIOS_LOG
1762         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x0e], th);
1763 #endif
1764
1765         Thread[th].status = 1;
1766         Thread[th].func    = a0;
1767         Thread[th].reg[29] = a1;
1768         Thread[th].reg[28] = a2;
1769
1770         v0 = th; pc0 = ra;
1771 }
1772
1773 /*
1774  *      int CloseTh(long thread);
1775  */
1776
1777 void psxBios_CloseTh() { // 0f
1778         int th = a0 & 0xff;
1779
1780 #ifdef PSXBIOS_LOG
1781         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x0f], th);
1782 #endif
1783
1784         if (Thread[th].status == 0) {
1785                 v0 = 0;
1786         } else {
1787                 Thread[th].status = 0;
1788                 v0 = 1;
1789         }
1790
1791         pc0 = ra;
1792 }
1793
1794 /*
1795  *      int ChangeTh(long thread);
1796  */
1797
1798 void psxBios_ChangeTh() { // 10
1799         int th = a0 & 0xff;
1800
1801 #ifdef PSXBIOS_LOG
1802 //      PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x10], th);
1803 #endif
1804
1805         if (Thread[th].status == 0 || CurThread == th) {
1806                 v0 = 0;
1807
1808                 pc0 = ra;
1809         } else {
1810                 v0 = 1;
1811
1812                 if (Thread[CurThread].status == 2) {
1813                         Thread[CurThread].status = 1;
1814                         Thread[CurThread].func = ra;
1815                         memcpy(Thread[CurThread].reg, psxRegs.GPR.r, 32*4);
1816                 }
1817
1818                 memcpy(psxRegs.GPR.r, Thread[th].reg, 32*4);
1819                 pc0 = Thread[th].func;
1820                 Thread[th].status = 2;
1821                 CurThread = th;
1822         }
1823 }
1824
1825 void psxBios_InitPAD() { // 0x12
1826 #ifdef PSXBIOS_LOG
1827         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x12]);
1828 #endif
1829
1830         pad_buf1 = (char*)Ra0;
1831         pad_buf1len = a1;
1832         pad_buf2 = (char*)Ra2;
1833         pad_buf2len = a3;
1834
1835         v0 = 1; pc0 = ra;
1836 }
1837
1838 void psxBios_StartPAD() { // 13
1839 #ifdef PSXBIOS_LOG
1840         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x13]);
1841 #endif
1842
1843         psxHwWrite16(0x1f801074, (unsigned short)(psxHwRead16(0x1f801074) | 0x1));
1844         psxRegs.CP0.n.Status |= 0x401;
1845         pc0 = ra;
1846 }
1847
1848 void psxBios_StopPAD() { // 14
1849 #ifdef PSXBIOS_LOG
1850         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x14]);
1851 #endif
1852         if (pad_buf == 0){
1853         pad_buf1 = NULL;
1854         pad_buf2 = NULL;
1855         }
1856         pc0 = ra;
1857 }
1858
1859 void psxBios_PAD_init() { // 15
1860 #ifdef PSXBIOS_LOG
1861         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x15]);
1862 #endif
1863         if (!(a0 == 0x20000000 || a0 == 0x20000001))
1864         {
1865                 v0 = 0;
1866                 pc0 = ra;
1867                 return;
1868         }
1869         psxHwWrite16(0x1f801074, (u16)(psxHwRead16(0x1f801074) | 0x1));
1870         pad_buf = (int *)Ra1;
1871         *pad_buf = -1;
1872         psxRegs.CP0.n.Status |= 0x401;
1873         v0 = 2;
1874         pc0 = ra;
1875 }
1876
1877 void psxBios_PAD_dr() { // 16
1878 #ifdef PSXBIOS_LOG
1879         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x16]);
1880 #endif
1881
1882         v0 = -1; pc0 = ra;
1883 }
1884
1885 void psxBios_ReturnFromException() { // 17
1886         LoadRegs();
1887
1888         pc0 = psxRegs.CP0.n.EPC;
1889         if (psxRegs.CP0.n.Cause & 0x80000000) pc0 += 4;
1890
1891         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
1892                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
1893 }
1894
1895 void psxBios_ResetEntryInt() { // 18
1896 #ifdef PSXBIOS_LOG
1897         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x18]);
1898 #endif
1899
1900         jmp_int = NULL;
1901         pc0 = ra;
1902 }
1903
1904 void psxBios_HookEntryInt() { // 19
1905 #ifdef PSXBIOS_LOG
1906         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x19]);
1907 #endif
1908
1909         jmp_int = (u32*)Ra0;
1910         pc0 = ra;
1911 }
1912
1913 void psxBios_UnDeliverEvent() { // 0x20
1914         int ev, spec;
1915         int i;
1916
1917         GetEv();
1918         GetSpec();
1919
1920 #ifdef PSXBIOS_LOG
1921         PSXBIOS_LOG("psxBios_%s %x,%x\n", biosB0n[0x20], ev, spec);
1922 #endif
1923
1924         if (Event[ev][spec].status == EvStALREADY &&
1925                 Event[ev][spec].mode == EvMdNOINTR)
1926                 Event[ev][spec].status = EvStACTIVE;
1927
1928         pc0 = ra;
1929 }
1930
1931 char ffile[64], *pfile;
1932 int nfile;
1933 static void buopen(int mcd, u8 *ptr, u8 *cfg)
1934 {
1935         int i;
1936         u8 *fptr = ptr;
1937
1938         strcpy(FDesc[1 + mcd].name, Ra0+5);
1939         FDesc[1 + mcd].offset = 0;
1940         FDesc[1 + mcd].mode   = a1;
1941
1942         for (i=1; i<16; i++) {
1943                 fptr += 128;
1944                 if ((*fptr & 0xF0) != 0x50) continue;
1945                 if (strcmp(FDesc[1 + mcd].name, fptr+0xa)) continue;
1946                 FDesc[1 + mcd].mcfile = i;
1947                 SysPrintf("open %s\n", fptr+0xa);
1948                 v0 = 1 + mcd;
1949                 break;
1950         }
1951         if (a1 & 0x200 && v0 == -1) { /* FCREAT */
1952                 fptr = ptr;
1953                 for (i=1; i<16; i++) {
1954                         int j, xor, nblk = a1 >> 16;
1955                         u8 *pptr, *fptr2;
1956
1957                         fptr += 128;
1958                         if ((*fptr & 0xF0) != 0xa0) continue;
1959
1960                         FDesc[1 + mcd].mcfile = i;
1961                         fptr[0] = 0x51;
1962                         fptr[4] = 0x00;
1963                         fptr[5] = 0x20 * nblk;
1964                         fptr[6] = 0x00;
1965                         fptr[7] = 0x00;
1966                         strcpy(fptr+0xa, FDesc[1 + mcd].name);
1967                         pptr = fptr2 = fptr;
1968                         for(j=2; j<=nblk; j++) {
1969                                 int k;
1970                                 for(i++; i<16; i++) {
1971                                         fptr2 += 128;
1972
1973                                         memset(fptr2, 0, 128);
1974                                         fptr2[0] = j < nblk ? 0x52 : 0x53;
1975                                         pptr[8] = i - 1;
1976                                         pptr[9] = 0;
1977                                         for (k=0, xor=0; k<127; k++) xor^= pptr[k];
1978                                         pptr[127] = xor;
1979                                         pptr = fptr2;
1980                                         break;
1981                                 }
1982                                 /* shouldn't this return ENOSPC if i == 16? */
1983                         }
1984                         pptr[8] = pptr[9] = 0xff;
1985                         for (j=0, xor=0; j<127; j++) xor^= pptr[j];
1986                         pptr[127] = xor;
1987                         SysPrintf("openC %s %d\n", ptr, nblk);
1988                         v0 = 1 + mcd;
1989                         /* just go ahead and resave them all */
1990                         SaveMcd(cfg, ptr, 128, 128 * 15);
1991                         break;
1992                 }
1993                 /* shouldn't this return ENOSPC if i == 16? */
1994         }
1995 }
1996
1997 /*
1998  *      int open(char *name , int mode);
1999  */
2000
2001 void psxBios_open() { // 0x32
2002         int i;
2003         char *ptr;
2004         void *pa0 = Ra0;
2005
2006 #ifdef PSXBIOS_LOG
2007         PSXBIOS_LOG("psxBios_%s: %s,%x\n", biosB0n[0x32], Ra0, a1);
2008 #endif
2009
2010         v0 = -1;
2011
2012         if (pa0) {
2013                 if (!strncmp(pa0, "bu00", 4)) {
2014                         buopen(1, Mcd1Data, Config.Mcd1);
2015                 }
2016
2017                 if (!strncmp(pa0, "bu10", 4)) {
2018                         buopen(2, Mcd2Data, Config.Mcd2);
2019                 }
2020         }
2021
2022         pc0 = ra;
2023 }
2024
2025 /*
2026  *      int lseek(int fd , int offset , int whence);
2027  */
2028
2029 void psxBios_lseek() { // 0x33
2030 #ifdef PSXBIOS_LOG
2031         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosB0n[0x33], a0, a1, a2);
2032 #endif
2033
2034         switch (a2) {
2035                 case 0: // SEEK_SET
2036                         FDesc[a0].offset = a1;
2037                         v0 = a1;
2038 //                      DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2039 //                      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2040                         break;
2041
2042                 case 1: // SEEK_CUR
2043                         FDesc[a0].offset+= a1;
2044                         v0 = FDesc[a0].offset;
2045                         break;
2046         }
2047
2048         pc0 = ra;
2049 }
2050
2051
2052 /*
2053  *      int read(int fd , void *buf , int nbytes);
2054  */
2055
2056 void psxBios_read() { // 0x34
2057         char *ptr;
2058         void *pa1 = Ra1;
2059
2060 #ifdef PSXBIOS_LOG
2061         PSXBIOS_LOG("psxBios_%s: %x, %x, %x\n", biosB0n[0x34], a0, a1, a2);
2062 #endif
2063
2064         v0 = -1;
2065
2066         if (pa1) {
2067                 switch (a0) {
2068                         case 2: buread(pa1, 1, a2); break;
2069                         case 3: buread(pa1, 2, a2); break;
2070                 }
2071         }
2072
2073         pc0 = ra;
2074 }
2075
2076 /*
2077  *      int write(int fd , void *buf , int nbytes);
2078  */
2079
2080 void psxBios_write() { // 0x35/0x03
2081         char *ptr;
2082         void *pa1 = Ra1;
2083
2084 #ifdef PSXBIOS_LOG
2085         PSXBIOS_LOG("psxBios_%s: %x,%x,%x\n", biosB0n[0x35], a0, a1, a2);
2086 #endif
2087
2088         v0 = -1;
2089         if (!pa1) {
2090                 pc0 = ra;
2091                 return;
2092         }
2093
2094         if (a0 == 1) { // stdout
2095                 char *ptr = pa1;
2096
2097                 v0 = a2;
2098                 while (a2 > 0) {
2099                         SysPrintf("%c", *ptr++); a2--;
2100                 }
2101                 pc0 = ra; return;
2102         }
2103
2104         switch (a0) {
2105                 case 2: buwrite(pa1, 1, a2); break;
2106                 case 3: buwrite(pa1, 2, a2); break;
2107         }
2108
2109         pc0 = ra;
2110 }
2111
2112 /*
2113  *      int close(int fd);
2114  */
2115
2116 void psxBios_close() { // 0x36
2117 #ifdef PSXBIOS_LOG
2118         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x36], a0);
2119 #endif
2120
2121         v0 = a0;
2122         pc0 = ra;
2123 }
2124
2125 void psxBios_putchar() { // 3d
2126         SysPrintf("%c", (char)a0);
2127         pc0 = ra;
2128 }
2129
2130 void psxBios_puts() { // 3e/3f
2131         SysPrintf("%s", Ra0);
2132         pc0 = ra;
2133 }
2134
2135 char ffile[64], *pfile;
2136 int nfile;
2137
2138 #define bufile(mcd) { \
2139         while (nfile < 16) { \
2140                 int match=1; \
2141  \
2142                 ptr = Mcd##mcd##Data + 128 * (nfile + 1); \
2143                 nfile++; \
2144                 if ((*ptr & 0xF0) != 0x50) continue; \
2145                 /* Bug link files show up as free block. */ \
2146                 if (!ptr[0xa]) continue; \
2147                 ptr+= 0xa; \
2148                 if (pfile[0] == 0) { \
2149                         strncpy(dir->name, ptr, sizeof(dir->name)); \
2150                         dir->name[sizeof(dir->name) - 1] = '\0'; \
2151                 } else for (i=0; i<20; i++) { \
2152                         if (pfile[i] == ptr[i]) { \
2153                                                                 dir->name[i] = ptr[i]; continue; } \
2154                         if (pfile[i] == '?') { \
2155                                 dir->name[i] = ptr[i]; continue; } \
2156                         if (pfile[i] == '*') { \
2157                                 strcpy(dir->name+i, ptr+i); break; } \
2158                         match = 0; break; \
2159                 } \
2160                 SysPrintf("%d : %s = %s + %s (match=%d)\n", nfile, dir->name, pfile, ptr, match); \
2161                 if (match == 0) { continue; } \
2162                 dir->size = 8192; \
2163                 v0 = _dir; \
2164                 break; \
2165         } \
2166 }
2167
2168 /*
2169  *      struct DIRENTRY* firstfile(char *name,struct DIRENTRY *dir);
2170  */
2171
2172 void psxBios_firstfile() { // 42
2173         struct DIRENTRY *dir = (struct DIRENTRY *)Ra1;
2174         void *pa0 = Ra0;
2175         u32 _dir = a1;
2176         char *ptr;
2177         int i;
2178
2179 #ifdef PSXBIOS_LOG
2180         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x42], Ra0);
2181 #endif
2182
2183         v0 = 0;
2184
2185         if (pa0) {
2186                 strcpy(ffile, pa0);
2187                 pfile = ffile+5;
2188                 nfile = 1;
2189                 if (!strncmp(pa0, "bu00", 4)) {
2190                         // firstfile() calls _card_read() internally, so deliver it's event
2191                         DeliverEvent(0x11, 0x2);
2192                         bufile(1);
2193                 } else if (!strncmp(pa0, "bu10", 4)) {
2194                         // firstfile() calls _card_read() internally, so deliver it's event
2195                         DeliverEvent(0x11, 0x2);
2196                         bufile(2);
2197                 }
2198         }
2199
2200         pc0 = ra;
2201 }
2202
2203 /*
2204  *      struct DIRENTRY* nextfile(struct DIRENTRY *dir);
2205  */
2206
2207 void psxBios_nextfile() { // 43
2208         struct DIRENTRY *dir = (struct DIRENTRY *)Ra0;
2209         u32 _dir = a0;
2210         char *ptr;
2211         int i;
2212
2213 #ifdef PSXBIOS_LOG
2214         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x43], dir->name);
2215 #endif
2216
2217         v0 = 0;
2218
2219         if (!strncmp(ffile, "bu00", 4)) {
2220                 bufile(1);
2221         }
2222
2223         if (!strncmp(ffile, "bu10", 4)) {
2224                 bufile(2);
2225         }
2226
2227         pc0 = ra;
2228 }
2229
2230 #define burename(mcd) { \
2231         for (i=1; i<16; i++) { \
2232                 int namelen, j, xor = 0; \
2233                 ptr = Mcd##mcd##Data + 128 * i; \
2234                 if ((*ptr & 0xF0) != 0x50) continue; \
2235                 if (strcmp(Ra0+5, ptr+0xa)) continue; \
2236                 namelen = strlen(Ra1+5); \
2237                 memcpy(ptr+0xa, Ra1+5, namelen); \
2238                 memset(ptr+0xa+namelen, 0, 0x75-namelen); \
2239                 for (j=0; j<127; j++) xor^= ptr[j]; \
2240                 ptr[127] = xor; \
2241                 SaveMcd(Config.Mcd##mcd, Mcd##mcd##Data, 128 * i + 0xa, 0x76); \
2242                 v0 = 1; \
2243                 break; \
2244         } \
2245 }
2246
2247 /*
2248  *      int rename(char *old, char *new);
2249  */
2250
2251 void psxBios_rename() { // 44
2252         void *pa0 = Ra0;
2253         void *pa1 = Ra1;
2254         char *ptr;
2255         int i;
2256
2257 #ifdef PSXBIOS_LOG
2258         PSXBIOS_LOG("psxBios_%s: %s,%s\n", biosB0n[0x44], Ra0, Ra1);
2259 #endif
2260
2261         v0 = 0;
2262
2263         if (pa0 && pa1) {
2264                 if (!strncmp(pa0, "bu00", 4) && !strncmp(pa1, "bu00", 4)) {
2265                         burename(1);
2266                 }
2267
2268                 if (!strncmp(pa0, "bu10", 4) && !strncmp(pa1, "bu10", 4)) {
2269                         burename(2);
2270                 }
2271         }
2272
2273         pc0 = ra;
2274 }
2275
2276
2277 #define budelete(mcd) { \
2278         for (i=1; i<16; i++) { \
2279                 ptr = Mcd##mcd##Data + 128 * i; \
2280                 if ((*ptr & 0xF0) != 0x50) continue; \
2281                 if (strcmp(Ra0+5, ptr+0xa)) continue; \
2282                 *ptr = (*ptr & 0xf) | 0xA0; \
2283                 SaveMcd(Config.Mcd##mcd, Mcd##mcd##Data, 128 * i, 1); \
2284                 SysPrintf("delete %s\n", ptr+0xa); \
2285                 v0 = 1; \
2286                 break; \
2287         } \
2288 }
2289
2290 /*
2291  *      int delete(char *name);
2292  */
2293
2294 void psxBios_delete() { // 45
2295         void *pa0 = Ra0;
2296         char *ptr;
2297         int i;
2298
2299 #ifdef PSXBIOS_LOG
2300         PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x45], Ra0);
2301 #endif
2302
2303         v0 = 0;
2304
2305         if (pa0) {
2306                 if (!strncmp(pa0, "bu00", 4)) {
2307                         budelete(1);
2308                 }
2309
2310                 if (!strncmp(pa0, "bu10", 4)) {
2311                         budelete(2);
2312                 }
2313         }
2314
2315         pc0 = ra;
2316 }
2317
2318 void psxBios_InitCARD() { // 4a
2319 #ifdef PSXBIOS_LOG
2320         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x4a], a0);
2321 #endif
2322
2323         CardState = 0;
2324
2325         pc0 = ra;
2326 }
2327
2328 void psxBios_StartCARD() { // 4b
2329 #ifdef PSXBIOS_LOG
2330         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4b]);
2331 #endif
2332
2333         if (CardState == 0) CardState = 1;
2334
2335         pc0 = ra;
2336 }
2337
2338 void psxBios_StopCARD() { // 4c
2339 #ifdef PSXBIOS_LOG
2340         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4c]);
2341 #endif
2342
2343         if (CardState == 1) CardState = 0;
2344
2345         pc0 = ra;
2346 }
2347
2348 void psxBios__card_write() { // 0x4e
2349         void *pa2 = Ra2;
2350         int port;
2351
2352 #ifdef PSXBIOS_LOG
2353         PSXBIOS_LOG("psxBios_%s: %x,%x,%x\n", biosB0n[0x4e], a0, a1, a2);
2354 #endif
2355         /* Function also accepts sector 400h (a bug) */
2356         if (!(a1 <= 0x400))
2357         {
2358                 /* Invalid sectors */
2359                 v0 = 0; pc0 = ra;
2360                 return;
2361         }
2362         card_active_chan = a0;
2363         port = a0 >> 4;
2364
2365         if (pa2) {
2366                 if (port == 0) {
2367                         memcpy(Mcd1Data + a1 * 128, pa2, 128);
2368                         SaveMcd(Config.Mcd1, Mcd1Data, a1 * 128, 128);
2369                 } else {
2370                         memcpy(Mcd2Data + a1 * 128, pa2, 128);
2371                         SaveMcd(Config.Mcd2, Mcd2Data, a1 * 128, 128);
2372                 }
2373         }
2374
2375         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2376 //      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2377
2378         v0 = 1; pc0 = ra;
2379 }
2380
2381 void psxBios__card_read() { // 0x4f
2382         void *pa2 = Ra2;
2383         int port;
2384
2385 #ifdef PSXBIOS_LOG
2386         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x4f]);
2387 #endif
2388         /* Function also accepts sector 400h (a bug) */
2389         if (!(a1 <= 0x400))
2390         {
2391                 /* Invalid sectors */
2392                 v0 = 0; pc0 = ra;
2393                 return;
2394         }
2395         card_active_chan = a0;
2396         port = a0 >> 4;
2397
2398         if (pa2) {
2399                 if (port == 0) {
2400                         memcpy(pa2, Mcd1Data + a1 * 128, 128);
2401                 } else {
2402                         memcpy(pa2, Mcd2Data + a1 * 128, 128);
2403                 }
2404         }
2405
2406         DeliverEvent(0x11, 0x2); // 0xf0000011, 0x0004
2407 //      DeliverEvent(0x81, 0x2); // 0xf4000001, 0x0004
2408
2409         v0 = 1; pc0 = ra;
2410 }
2411
2412 void psxBios__new_card() { // 0x50
2413 #ifdef PSXBIOS_LOG
2414         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x50]);
2415 #endif
2416
2417         pc0 = ra;
2418 }
2419
2420 /* According to a user, this allows Final Fantasy Tactics to save/load properly */
2421 void psxBios__get_error(void) // 55
2422 {
2423         v0 = 0;
2424         pc0 = ra;
2425 }
2426
2427 void psxBios_Krom2RawAdd() { // 0x51
2428         int i = 0;
2429
2430         const u32 table_8140[][2] = {
2431                 {0x8140, 0x0000}, {0x8180, 0x0762}, {0x81ad, 0x0cc6}, {0x81b8, 0x0ca8},
2432                 {0x81c0, 0x0f00}, {0x81c8, 0x0d98}, {0x81cf, 0x10c2}, {0x81da, 0x0e6a},
2433                 {0x81e9, 0x13ce}, {0x81f0, 0x102c}, {0x81f8, 0x1590}, {0x81fc, 0x111c},
2434                 {0x81fd, 0x1626}, {0x824f, 0x113a}, {0x8259, 0x20ee}, {0x8260, 0x1266},
2435                 {0x827a, 0x24cc}, {0x8281, 0x1572}, {0x829b, 0x28aa}, {0x829f, 0x187e},
2436                 {0x82f2, 0x32dc}, {0x8340, 0x2238}, {0x837f, 0x4362}, {0x8380, 0x299a},
2437                 {0x8397, 0x4632}, {0x839f, 0x2c4c}, {0x83b7, 0x49f2}, {0x83bf, 0x2f1c},
2438                 {0x83d7, 0x4db2}, {0x8440, 0x31ec}, {0x8461, 0x5dde}, {0x8470, 0x35ca},
2439                 {0x847f, 0x6162}, {0x8480, 0x378c}, {0x8492, 0x639c}, {0x849f, 0x39a8},
2440                 {0xffff, 0}
2441         };
2442
2443         const u32 table_889f[][2] = {
2444                 {0x889f, 0x3d68},  {0x8900, 0x40ec},  {0x897f, 0x4fb0},  {0x8a00, 0x56f4},
2445                 {0x8a7f, 0x65b8},  {0x8b00, 0x6cfc},  {0x8b7f, 0x7bc0},  {0x8c00, 0x8304},
2446                 {0x8c7f, 0x91c8},  {0x8d00, 0x990c},  {0x8d7f, 0xa7d0},  {0x8e00, 0xaf14},
2447                 {0x8e7f, 0xbdd8},  {0x8f00, 0xc51c},  {0x8f7f, 0xd3e0},  {0x9000, 0xdb24},
2448                 {0x907f, 0xe9e8},  {0x9100, 0xf12c},  {0x917f, 0xfff0},  {0x9200, 0x10734},
2449                 {0x927f, 0x115f8}, {0x9300, 0x11d3c}, {0x937f, 0x12c00}, {0x9400, 0x13344},
2450                 {0x947f, 0x14208}, {0x9500, 0x1494c}, {0x957f, 0x15810}, {0x9600, 0x15f54},
2451                 {0x967f, 0x16e18}, {0x9700, 0x1755c}, {0x977f, 0x18420}, {0x9800, 0x18b64},
2452                 {0xffff, 0}
2453         };
2454
2455         if (a0 >= 0x8140 && a0 <= 0x84be) {
2456                 while (table_8140[i][0] <= a0) i++;
2457                 a0 -= table_8140[i - 1][0];
2458                 v0 = 0xbfc66000 + (a0 * 0x1e + table_8140[i - 1][1]);
2459         } else if (a0 >= 0x889f && a0 <= 0x9872) {
2460                 while (table_889f[i][0] <= a0) i++;
2461                 a0 -= table_889f[i - 1][0];
2462                 v0 = 0xbfc66000 + (a0 * 0x1e + table_889f[i - 1][1]);
2463         } else {
2464                 v0 = 0xffffffff;
2465         }
2466
2467         pc0 = ra;
2468 }
2469
2470 void psxBios_GetC0Table() { // 56
2471 #ifdef PSXBIOS_LOG
2472         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x56]);
2473 #endif
2474
2475         v0 = 0x674; pc0 = ra;
2476 }
2477
2478 void psxBios_GetB0Table() { // 57
2479 #ifdef PSXBIOS_LOG
2480         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x57]);
2481 #endif
2482
2483         v0 = 0x874; pc0 = ra;
2484 }
2485
2486 void psxBios__card_chan() { // 0x58
2487 #ifdef PSXBIOS_LOG
2488         PSXBIOS_LOG("psxBios_%s\n", biosB0n[0x58]);
2489 #endif
2490
2491         v0 = card_active_chan;
2492         pc0 = ra;
2493 }
2494
2495 void psxBios_ChangeClearPad() { // 5b
2496 #ifdef PSXBIOS_LOG
2497         PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x5b], a0);
2498 #endif
2499
2500         pc0 = ra;
2501 }
2502
2503 /* System calls C0 */
2504
2505 /*
2506  * int SysEnqIntRP(int index , long *queue);
2507  */
2508
2509 void psxBios_SysEnqIntRP() { // 02
2510 #ifdef PSXBIOS_LOG
2511         PSXBIOS_LOG("psxBios_%s: %x\n", biosC0n[0x02] ,a0);
2512 #endif
2513
2514         SysIntRP[a0] = a1;
2515
2516         v0 = 0; pc0 = ra;
2517 }
2518
2519 /*
2520  * int SysDeqIntRP(int index , long *queue);
2521  */
2522
2523 void psxBios_SysDeqIntRP() { // 03
2524 #ifdef PSXBIOS_LOG
2525         PSXBIOS_LOG("psxBios_%s: %x\n", biosC0n[0x03], a0);
2526 #endif
2527
2528         SysIntRP[a0] = 0;
2529
2530         v0 = 0; pc0 = ra;
2531 }
2532
2533 void psxBios_ChangeClearRCnt() { // 0a
2534         u32 *ptr;
2535
2536 #ifdef PSXBIOS_LOG
2537         PSXBIOS_LOG("psxBios_%s: %x, %x\n", biosC0n[0x0a], a0, a1);
2538 #endif
2539
2540         ptr = (u32*)PSXM((a0 << 2) + 0x8600);
2541         v0 = *ptr;
2542         *ptr = a1;
2543
2544 //      psxRegs.CP0.n.Status|= 0x404;
2545         pc0 = ra;
2546 }
2547
2548 void psxBios_dummy() {
2549 #ifdef PSXBIOS_LOG
2550         PSXBIOS_LOG("unk %x call: %x\n", pc0 & 0x1fffff, t1);
2551 #endif
2552         pc0 = ra;
2553 }
2554
2555 void (*biosA0[256])();
2556 void (*biosB0[256])();
2557 void (*biosC0[256])();
2558
2559 #include "sjisfont.h"
2560
2561 void psxBiosInit() {
2562         u32 base, size;
2563         u32 *ptr;
2564         int i;
2565         uLongf len;
2566
2567         for(i = 0; i < 256; i++) {
2568                 biosA0[i] = NULL;
2569                 biosB0[i] = NULL;
2570                 biosC0[i] = NULL;
2571         }
2572         biosA0[0x3e] = psxBios_puts;
2573         biosA0[0x3f] = psxBios_printf;
2574
2575         biosB0[0x3d] = psxBios_putchar;
2576         biosB0[0x3f] = psxBios_puts;
2577
2578         if (!Config.HLE) return;
2579
2580         for(i = 0; i < 256; i++) {
2581                 if (biosA0[i] == NULL) biosA0[i] = psxBios_dummy;
2582                 if (biosB0[i] == NULL) biosB0[i] = psxBios_dummy;
2583                 if (biosC0[i] == NULL) biosC0[i] = psxBios_dummy;
2584         }
2585
2586         biosA0[0x00] = psxBios_open;
2587         biosA0[0x01] = psxBios_lseek;
2588         biosA0[0x02] = psxBios_read;
2589         biosA0[0x03] = psxBios_write;
2590         biosA0[0x04] = psxBios_close;
2591         //biosA0[0x05] = psxBios_ioctl;
2592         //biosA0[0x06] = psxBios_exit;
2593         //biosA0[0x07] = psxBios_sys_a0_07;
2594         biosA0[0x08] = psxBios_getc;
2595         biosA0[0x09] = psxBios_putc;
2596         biosA0[0x0a] = psxBios_todigit;
2597         //biosA0[0x0b] = psxBios_atof;
2598         //biosA0[0x0c] = psxBios_strtoul;
2599         //biosA0[0x0d] = psxBios_strtol;
2600         biosA0[0x0e] = psxBios_abs;
2601         biosA0[0x0f] = psxBios_labs;
2602         biosA0[0x10] = psxBios_atoi;
2603         biosA0[0x11] = psxBios_atol;
2604         //biosA0[0x12] = psxBios_atob;
2605         biosA0[0x13] = psxBios_setjmp;
2606         biosA0[0x14] = psxBios_longjmp;
2607         biosA0[0x15] = psxBios_strcat;
2608         biosA0[0x16] = psxBios_strncat;
2609         biosA0[0x17] = psxBios_strcmp;
2610         biosA0[0x18] = psxBios_strncmp;
2611         biosA0[0x19] = psxBios_strcpy;
2612         biosA0[0x1a] = psxBios_strncpy;
2613         biosA0[0x1b] = psxBios_strlen;
2614         biosA0[0x1c] = psxBios_index;
2615         biosA0[0x1d] = psxBios_rindex;
2616         biosA0[0x1e] = psxBios_strchr;
2617         biosA0[0x1f] = psxBios_strrchr;
2618         biosA0[0x20] = psxBios_strpbrk;
2619         biosA0[0x21] = psxBios_strspn;
2620         biosA0[0x22] = psxBios_strcspn;
2621         biosA0[0x23] = psxBios_strtok;
2622         biosA0[0x24] = psxBios_strstr;
2623         biosA0[0x25] = psxBios_toupper;
2624         biosA0[0x26] = psxBios_tolower;
2625         biosA0[0x27] = psxBios_bcopy;
2626         biosA0[0x28] = psxBios_bzero;
2627         biosA0[0x29] = psxBios_bcmp;
2628         biosA0[0x2a] = psxBios_memcpy;
2629         biosA0[0x2b] = psxBios_memset;
2630         biosA0[0x2c] = psxBios_memmove;
2631         biosA0[0x2d] = psxBios_memcmp;
2632         biosA0[0x2e] = psxBios_memchr;
2633         biosA0[0x2f] = psxBios_rand;
2634         biosA0[0x30] = psxBios_srand;
2635         biosA0[0x31] = psxBios_qsort;
2636         //biosA0[0x32] = psxBios_strtod;
2637         biosA0[0x33] = psxBios_malloc;
2638         biosA0[0x34] = psxBios_free;
2639         //biosA0[0x35] = psxBios_lsearch;
2640         //biosA0[0x36] = psxBios_bsearch;
2641         biosA0[0x37] = psxBios_calloc;
2642         biosA0[0x38] = psxBios_realloc;
2643         biosA0[0x39] = psxBios_InitHeap;
2644         //biosA0[0x3a] = psxBios__exit;
2645         biosA0[0x3b] = psxBios_getchar;
2646         biosA0[0x3c] = psxBios_putchar;
2647         //biosA0[0x3d] = psxBios_gets;
2648         //biosA0[0x40] = psxBios_sys_a0_40;
2649         //biosA0[0x41] = psxBios_LoadTest;
2650         biosA0[0x42] = psxBios_Load;
2651         biosA0[0x43] = psxBios_Exec;
2652         biosA0[0x44] = psxBios_FlushCache;
2653         //biosA0[0x45] = psxBios_InstallInterruptHandler;
2654         biosA0[0x46] = psxBios_GPU_dw;
2655         biosA0[0x47] = psxBios_mem2vram;
2656         biosA0[0x48] = psxBios_SendGPU;
2657         biosA0[0x49] = psxBios_GPU_cw;
2658         biosA0[0x4a] = psxBios_GPU_cwb;
2659         biosA0[0x4b] = psxBios_GPU_SendPackets;
2660         biosA0[0x4c] = psxBios_sys_a0_4c;
2661         biosA0[0x4d] = psxBios_GPU_GetGPUStatus;
2662         //biosA0[0x4e] = psxBios_GPU_sync;
2663         //biosA0[0x4f] = psxBios_sys_a0_4f;
2664         //biosA0[0x50] = psxBios_sys_a0_50;
2665         biosA0[0x51] = psxBios_LoadExec;
2666         //biosA0[0x52] = psxBios_GetSysSp;
2667         //biosA0[0x53] = psxBios_sys_a0_53;
2668         //biosA0[0x54] = psxBios__96_init_a54;
2669         //biosA0[0x55] = psxBios__bu_init_a55;
2670         //biosA0[0x56] = psxBios__96_remove_a56;
2671         //biosA0[0x57] = psxBios_sys_a0_57;
2672         //biosA0[0x58] = psxBios_sys_a0_58;
2673         //biosA0[0x59] = psxBios_sys_a0_59;
2674         //biosA0[0x5a] = psxBios_sys_a0_5a;
2675         //biosA0[0x5b] = psxBios_dev_tty_init;
2676         //biosA0[0x5c] = psxBios_dev_tty_open;
2677         //biosA0[0x5d] = psxBios_sys_a0_5d;
2678         //biosA0[0x5e] = psxBios_dev_tty_ioctl;
2679         //biosA0[0x5f] = psxBios_dev_cd_open;
2680         //biosA0[0x60] = psxBios_dev_cd_read;
2681         //biosA0[0x61] = psxBios_dev_cd_close;
2682         //biosA0[0x62] = psxBios_dev_cd_firstfile;
2683         //biosA0[0x63] = psxBios_dev_cd_nextfile;
2684         //biosA0[0x64] = psxBios_dev_cd_chdir;
2685         //biosA0[0x65] = psxBios_dev_card_open;
2686         //biosA0[0x66] = psxBios_dev_card_read;
2687         //biosA0[0x67] = psxBios_dev_card_write;
2688         //biosA0[0x68] = psxBios_dev_card_close;
2689         //biosA0[0x69] = psxBios_dev_card_firstfile;
2690         //biosA0[0x6a] = psxBios_dev_card_nextfile;
2691         //biosA0[0x6b] = psxBios_dev_card_erase;
2692         //biosA0[0x6c] = psxBios_dev_card_undelete;
2693         //biosA0[0x6d] = psxBios_dev_card_format;
2694         //biosA0[0x6e] = psxBios_dev_card_rename;
2695         //biosA0[0x6f] = psxBios_dev_card_6f;
2696         biosA0[0x70] = psxBios__bu_init;
2697         biosA0[0x71] = psxBios__96_init;
2698         biosA0[0x72] = psxBios__96_remove;
2699         //biosA0[0x73] = psxBios_sys_a0_73;
2700         //biosA0[0x74] = psxBios_sys_a0_74;
2701         //biosA0[0x75] = psxBios_sys_a0_75;
2702         //biosA0[0x76] = psxBios_sys_a0_76;
2703         //biosA0[0x77] = psxBios_sys_a0_77;
2704         //biosA0[0x78] = psxBios__96_CdSeekL;
2705         //biosA0[0x79] = psxBios_sys_a0_79;
2706         //biosA0[0x7a] = psxBios_sys_a0_7a;
2707         //biosA0[0x7b] = psxBios_sys_a0_7b;
2708         //biosA0[0x7c] = psxBios__96_CdGetStatus;
2709         //biosA0[0x7d] = psxBios_sys_a0_7d;
2710         //biosA0[0x7e] = psxBios__96_CdRead;
2711         //biosA0[0x7f] = psxBios_sys_a0_7f;
2712         //biosA0[0x80] = psxBios_sys_a0_80;
2713         //biosA0[0x81] = psxBios_sys_a0_81;
2714         //biosA0[0x82] = psxBios_sys_a0_82;
2715         //biosA0[0x83] = psxBios_sys_a0_83;
2716         //biosA0[0x84] = psxBios_sys_a0_84;
2717         //biosA0[0x85] = psxBios__96_CdStop;
2718         //biosA0[0x86] = psxBios_sys_a0_86;
2719         //biosA0[0x87] = psxBios_sys_a0_87;
2720         //biosA0[0x88] = psxBios_sys_a0_88;
2721         //biosA0[0x89] = psxBios_sys_a0_89;
2722         //biosA0[0x8a] = psxBios_sys_a0_8a;
2723         //biosA0[0x8b] = psxBios_sys_a0_8b;
2724         //biosA0[0x8c] = psxBios_sys_a0_8c;
2725         //biosA0[0x8d] = psxBios_sys_a0_8d;
2726         //biosA0[0x8e] = psxBios_sys_a0_8e;
2727         //biosA0[0x8f] = psxBios_sys_a0_8f;
2728         //biosA0[0x90] = psxBios_sys_a0_90;
2729         //biosA0[0x91] = psxBios_sys_a0_91;
2730         //biosA0[0x92] = psxBios_sys_a0_92;
2731         //biosA0[0x93] = psxBios_sys_a0_93;
2732         //biosA0[0x94] = psxBios_sys_a0_94;
2733         //biosA0[0x95] = psxBios_sys_a0_95;
2734         //biosA0[0x96] = psxBios_AddCDROMDevice;
2735         //biosA0[0x97] = psxBios_AddMemCardDevide;
2736         //biosA0[0x98] = psxBios_DisableKernelIORedirection;
2737         //biosA0[0x99] = psxBios_EnableKernelIORedirection;
2738         //biosA0[0x9a] = psxBios_sys_a0_9a;
2739         //biosA0[0x9b] = psxBios_sys_a0_9b;
2740         //biosA0[0x9c] = psxBios_SetConf;
2741         //biosA0[0x9d] = psxBios_GetConf;
2742         //biosA0[0x9e] = psxBios_sys_a0_9e;
2743         biosA0[0x9f] = psxBios_SetMem;
2744         //biosA0[0xa0] = psxBios__boot;
2745         //biosA0[0xa1] = psxBios_SystemError;
2746         //biosA0[0xa2] = psxBios_EnqueueCdIntr;
2747         //biosA0[0xa3] = psxBios_DequeueCdIntr;
2748         //biosA0[0xa4] = psxBios_sys_a0_a4;
2749         //biosA0[0xa5] = psxBios_ReadSector;
2750         //biosA0[0xa6] = psxBios_get_cd_status;
2751         //biosA0[0xa7] = psxBios_bufs_cb_0;
2752         //biosA0[0xa8] = psxBios_bufs_cb_1;
2753         //biosA0[0xa9] = psxBios_bufs_cb_2;
2754         //biosA0[0xaa] = psxBios_bufs_cb_3;
2755         biosA0[0xab] = psxBios__card_info;
2756         biosA0[0xac] = psxBios__card_load;
2757         //biosA0[0axd] = psxBios__card_auto;
2758         //biosA0[0xae] = psxBios_bufs_cd_4;
2759         //biosA0[0xaf] = psxBios_sys_a0_af;
2760         //biosA0[0xb0] = psxBios_sys_a0_b0;
2761         //biosA0[0xb1] = psxBios_sys_a0_b1;
2762         //biosA0[0xb2] = psxBios_do_a_long_jmp
2763         //biosA0[0xb3] = psxBios_sys_a0_b3;
2764         //biosA0[0xb4] = psxBios_sub_function;
2765 //*******************B0 CALLS****************************
2766         //biosB0[0x00] = psxBios_SysMalloc;
2767         //biosB0[0x01] = psxBios_sys_b0_01;
2768         biosB0[0x02] = psxBios_SetRCnt;
2769         biosB0[0x03] = psxBios_GetRCnt;
2770         biosB0[0x04] = psxBios_StartRCnt;
2771         biosB0[0x05] = psxBios_StopRCnt;
2772         biosB0[0x06] = psxBios_ResetRCnt;
2773         biosB0[0x07] = psxBios_DeliverEvent;
2774         biosB0[0x08] = psxBios_OpenEvent;
2775         biosB0[0x09] = psxBios_CloseEvent;
2776         biosB0[0x0a] = psxBios_WaitEvent;
2777         biosB0[0x0b] = psxBios_TestEvent;
2778         biosB0[0x0c] = psxBios_EnableEvent;
2779         biosB0[0x0d] = psxBios_DisableEvent;
2780         biosB0[0x0e] = psxBios_OpenTh;
2781         biosB0[0x0f] = psxBios_CloseTh;
2782         biosB0[0x10] = psxBios_ChangeTh;
2783         //biosB0[0x11] = psxBios_psxBios_b0_11;
2784         biosB0[0x12] = psxBios_InitPAD;
2785         biosB0[0x13] = psxBios_StartPAD;
2786         biosB0[0x14] = psxBios_StopPAD;
2787         biosB0[0x15] = psxBios_PAD_init;
2788         biosB0[0x16] = psxBios_PAD_dr;
2789         biosB0[0x17] = psxBios_ReturnFromException;
2790         biosB0[0x18] = psxBios_ResetEntryInt;
2791         biosB0[0x19] = psxBios_HookEntryInt;
2792         //biosB0[0x1a] = psxBios_sys_b0_1a;
2793         //biosB0[0x1b] = psxBios_sys_b0_1b;
2794         //biosB0[0x1c] = psxBios_sys_b0_1c;
2795         //biosB0[0x1d] = psxBios_sys_b0_1d;
2796         //biosB0[0x1e] = psxBios_sys_b0_1e;
2797         //biosB0[0x1f] = psxBios_sys_b0_1f;
2798         biosB0[0x20] = psxBios_UnDeliverEvent;
2799         //biosB0[0x21] = psxBios_sys_b0_21;
2800         //biosB0[0x22] = psxBios_sys_b0_22;
2801         //biosB0[0x23] = psxBios_sys_b0_23;
2802         //biosB0[0x24] = psxBios_sys_b0_24;
2803         //biosB0[0x25] = psxBios_sys_b0_25;
2804         //biosB0[0x26] = psxBios_sys_b0_26;
2805         //biosB0[0x27] = psxBios_sys_b0_27;
2806         //biosB0[0x28] = psxBios_sys_b0_28;
2807         //biosB0[0x29] = psxBios_sys_b0_29;
2808         //biosB0[0x2a] = psxBios_sys_b0_2a;
2809         //biosB0[0x2b] = psxBios_sys_b0_2b;
2810         //biosB0[0x2c] = psxBios_sys_b0_2c;
2811         //biosB0[0x2d] = psxBios_sys_b0_2d;
2812         //biosB0[0x2e] = psxBios_sys_b0_2e;
2813         //biosB0[0x2f] = psxBios_sys_b0_2f;
2814         //biosB0[0x30] = psxBios_sys_b0_30;
2815         //biosB0[0x31] = psxBios_sys_b0_31;
2816         biosB0[0x32] = psxBios_open;
2817         biosB0[0x33] = psxBios_lseek;
2818         biosB0[0x34] = psxBios_read;
2819         biosB0[0x35] = psxBios_write;
2820         biosB0[0x36] = psxBios_close;
2821         //biosB0[0x37] = psxBios_ioctl;
2822         //biosB0[0x38] = psxBios_exit;
2823         //biosB0[0x39] = psxBios_sys_b0_39;
2824         //biosB0[0x3a] = psxBios_getc;
2825         //biosB0[0x3b] = psxBios_putc;
2826         biosB0[0x3c] = psxBios_getchar;
2827         //biosB0[0x3e] = psxBios_gets;
2828         //biosB0[0x40] = psxBios_cd;
2829         biosB0[0x41] = psxBios_format;
2830         biosB0[0x42] = psxBios_firstfile;
2831         biosB0[0x43] = psxBios_nextfile;
2832         biosB0[0x44] = psxBios_rename;
2833         biosB0[0x45] = psxBios_delete;
2834         //biosB0[0x46] = psxBios_undelete;
2835         //biosB0[0x47] = psxBios_AddDevice;
2836         //biosB0[0x48] = psxBios_RemoteDevice;
2837         //biosB0[0x49] = psxBios_PrintInstalledDevices;
2838         biosB0[0x4a] = psxBios_InitCARD;
2839         biosB0[0x4b] = psxBios_StartCARD;
2840         biosB0[0x4c] = psxBios_StopCARD;
2841         //biosB0[0x4d] = psxBios_sys_b0_4d;
2842         biosB0[0x4e] = psxBios__card_write;
2843         biosB0[0x4f] = psxBios__card_read;
2844         biosB0[0x50] = psxBios__new_card;
2845         biosB0[0x51] = psxBios_Krom2RawAdd;
2846         //biosB0[0x52] = psxBios_sys_b0_52;
2847         //biosB0[0x53] = psxBios_sys_b0_53;
2848         //biosB0[0x54] = psxBios__get_errno;
2849         biosB0[0x55] = psxBios__get_error;
2850         biosB0[0x56] = psxBios_GetC0Table;
2851         biosB0[0x57] = psxBios_GetB0Table;
2852         biosB0[0x58] = psxBios__card_chan;
2853         //biosB0[0x59] = psxBios_sys_b0_59;
2854         //biosB0[0x5a] = psxBios_sys_b0_5a;
2855         biosB0[0x5b] = psxBios_ChangeClearPad;
2856         //biosB0[0x5c] = psxBios__card_status;
2857         //biosB0[0x5d] = psxBios__card_wait;
2858 //*******************C0 CALLS****************************
2859         //biosC0[0x00] = psxBios_InitRCnt;
2860         //biosC0[0x01] = psxBios_InitException;
2861         biosC0[0x02] = psxBios_SysEnqIntRP;
2862         biosC0[0x03] = psxBios_SysDeqIntRP;
2863         //biosC0[0x04] = psxBios_get_free_EvCB_slot;
2864         //biosC0[0x05] = psxBios_get_free_TCB_slot;
2865         //biosC0[0x06] = psxBios_ExceptionHandler;
2866         //biosC0[0x07] = psxBios_InstallExeptionHandler;
2867         //biosC0[0x08] = psxBios_SysInitMemory;
2868         //biosC0[0x09] = psxBios_SysInitKMem;
2869         biosC0[0x0a] = psxBios_ChangeClearRCnt;
2870         //biosC0[0x0b] = psxBios_SystemError;
2871         //biosC0[0x0c] = psxBios_InitDefInt;
2872         //biosC0[0x0d] = psxBios_sys_c0_0d;
2873         //biosC0[0x0e] = psxBios_sys_c0_0e;
2874         //biosC0[0x0f] = psxBios_sys_c0_0f;
2875         //biosC0[0x10] = psxBios_sys_c0_10;
2876         //biosC0[0x11] = psxBios_sys_c0_11;
2877         //biosC0[0x12] = psxBios_InstallDevices;
2878         //biosC0[0x13] = psxBios_FlushStfInOutPut;
2879         //biosC0[0x14] = psxBios_sys_c0_14;
2880         //biosC0[0x15] = psxBios__cdevinput;
2881         //biosC0[0x16] = psxBios__cdevscan;
2882         //biosC0[0x17] = psxBios__circgetc;
2883         //biosC0[0x18] = psxBios__circputc;
2884         //biosC0[0x19] = psxBios_ioabort;
2885         //biosC0[0x1a] = psxBios_sys_c0_1a
2886         //biosC0[0x1b] = psxBios_KernelRedirect;
2887         //biosC0[0x1c] = psxBios_PatchAOTable;
2888 //************** THE END ***************************************
2889 /**/
2890         base = 0x1000;
2891         size = sizeof(EvCB) * 32;
2892         Event = (void *)&psxR[base]; base += size * 6;
2893         memset(Event, 0, size * 6);
2894         HwEV = Event;
2895         EvEV = Event + 32;
2896         RcEV = Event + 32 * 2;
2897         UeEV = Event + 32 * 3;
2898         SwEV = Event + 32 * 4;
2899         ThEV = Event + 32 * 5;
2900
2901         ptr = (u32 *)&psxM[0x0874]; // b0 table
2902         ptr[0] = SWAPu32(0x4c54 - 0x884);
2903
2904         ptr = (u32 *)&psxM[0x0674]; // c0 table
2905         ptr[6] = SWAPu32(0xc80);
2906
2907         memset(SysIntRP, 0, sizeof(SysIntRP));
2908         memset(Thread, 0, sizeof(Thread));
2909         Thread[0].status = 2; // main thread
2910
2911         jmp_int = NULL;
2912         pad_buf = NULL;
2913         pad_buf1 = NULL;
2914         pad_buf2 = NULL;
2915         pad_buf1len = pad_buf2len = 0;
2916         heap_addr = NULL;
2917         heap_end = NULL;
2918         heap_size = 0;
2919         CardState = -1;
2920         CurThread = 0;
2921         memset(FDesc, 0, sizeof(FDesc));
2922
2923         psxMu32ref(0x0150) = SWAPu32(0x160);
2924         psxMu32ref(0x0154) = SWAPu32(0x320);
2925         psxMu32ref(0x0160) = SWAPu32(0x248);
2926         strcpy((char *)&psxM[0x248], "bu");
2927 /*      psxMu32ref(0x0ca8) = SWAPu32(0x1f410004);
2928         psxMu32ref(0x0cf0) = SWAPu32(0x3c020000);
2929         psxMu32ref(0x0cf4) = SWAPu32(0x2442641c);
2930         psxMu32ref(0x09e0) = SWAPu32(0x43d0);
2931         psxMu32ref(0x4d98) = SWAPu32(0x946f000a);
2932 */
2933         // opcode HLE
2934         psxRu32ref(0x0000) = SWAPu32((0x3b << 26) | 4);
2935         psxMu32ref(0x0000) = SWAPu32((0x3b << 26) | 0);
2936         psxMu32ref(0x00a0) = SWAPu32((0x3b << 26) | 1);
2937         psxMu32ref(0x00b0) = SWAPu32((0x3b << 26) | 2);
2938         psxMu32ref(0x00c0) = SWAPu32((0x3b << 26) | 3);
2939         psxMu32ref(0x4c54) = SWAPu32((0x3b << 26) | 0);
2940         psxMu32ref(0x8000) = SWAPu32((0x3b << 26) | 5);
2941         psxMu32ref(0x07a0) = SWAPu32((0x3b << 26) | 0);
2942         psxMu32ref(0x0884) = SWAPu32((0x3b << 26) | 0);
2943         psxMu32ref(0x0894) = SWAPu32((0x3b << 26) | 0);
2944
2945         // initial stack pointer for BIOS interrupt
2946         psxMu32ref(0x6c80) = SWAPu32(0x000085c8);
2947
2948         // initial RNG seed
2949         psxMu32ref(0x9010) = SWAPu32(0xac20cc00);
2950
2951         // fonts
2952         len = 0x80000 - 0x66000;
2953         uncompress((Bytef *)(psxR + 0x66000), &len, font_8140, sizeof(font_8140));
2954         len = 0x80000 - 0x69d68;
2955         uncompress((Bytef *)(psxR + 0x69d68), &len, font_889f, sizeof(font_889f));
2956
2957         // memory size 2 MB
2958         psxHu32ref(0x1060) = SWAPu32(0x00000b88);
2959
2960         hleSoftCall = FALSE;
2961 }
2962
2963 void psxBiosShutdown() {
2964 }
2965
2966 #define psxBios_PADpoll(pad) { \
2967         PAD##pad##_startPoll(pad); \
2968         pad_buf##pad[0] = 0; \
2969         pad_buf##pad[1] = PAD##pad##_poll(0x42); \
2970         if (!(pad_buf##pad[1] & 0x0f)) { \
2971                 bufcount = 32; \
2972         } else { \
2973                 bufcount = (pad_buf##pad[1] & 0x0f) * 2; \
2974         } \
2975         PAD##pad##_poll(0); \
2976         i = 2; \
2977         while (bufcount--) { \
2978                 pad_buf##pad[i++] = PAD##pad##_poll(0); \
2979         } \
2980 }
2981
2982 void biosInterrupt() {
2983         int i, bufcount;
2984
2985 //      if (psxHu32(0x1070) & 0x1) { // Vsync
2986                 if (pad_buf != NULL) {
2987                         u32 *buf = (u32*)pad_buf;
2988
2989                         if (!Config.UseNet) {
2990                                 PAD1_startPoll(1);
2991                                 if (PAD1_poll(0x42) == 0x23) {
2992                                         PAD1_poll(0);
2993                                         *buf = PAD1_poll(0) << 8;
2994                                         *buf |= PAD1_poll(0);
2995                                         PAD1_poll(0);
2996                                         *buf &= ~((PAD1_poll(0) > 0x20) ? 1 << 6 : 0);
2997                                         *buf &= ~((PAD1_poll(0) > 0x20) ? 1 << 7 : 0);
2998                                 } else {
2999                                         PAD1_poll(0);
3000                                         *buf = PAD1_poll(0) << 8;
3001                                         *buf|= PAD1_poll(0);
3002                                 }
3003
3004                                 PAD2_startPoll(2);
3005                                 if (PAD2_poll(0x42) == 0x23) {
3006                                         PAD2_poll(0);
3007                                         *buf |= PAD2_poll(0) << 24;
3008                                         *buf |= PAD2_poll(0) << 16;
3009                                         PAD2_poll(0);
3010                                         *buf &= ~((PAD2_poll(0) > 0x20) ? 1 << 22 : 0);
3011                                         *buf &= ~((PAD2_poll(0) > 0x20) ? 1 << 23 : 0);
3012                                 } else {
3013                                         PAD2_poll(0);
3014                                         *buf |= PAD2_poll(0) << 24;
3015                                         *buf |= PAD2_poll(0) << 16;
3016                                 }
3017                         } else {
3018                                 u16 data;
3019
3020                                 PAD1_startPoll(1);
3021                                 PAD1_poll(0x42);
3022                                 PAD1_poll(0);
3023                                 data = PAD1_poll(0) << 8;
3024                                 data |= PAD1_poll(0);
3025
3026                                 if (NET_sendPadData(&data, 2) == -1)
3027                                         netError();
3028
3029                                 if (NET_recvPadData(&((u16*)buf)[0], 1) == -1)
3030                                         netError();
3031                                 if (NET_recvPadData(&((u16*)buf)[1], 2) == -1)
3032                                         netError();
3033                         }
3034                 }
3035                 if (Config.UseNet && pad_buf1 != NULL && pad_buf2 != NULL) {
3036                         psxBios_PADpoll(1);
3037
3038                         if (NET_sendPadData(pad_buf1, i) == -1)
3039                                 netError();
3040
3041                         if (NET_recvPadData(pad_buf1, 1) == -1)
3042                                 netError();
3043                         if (NET_recvPadData(pad_buf2, 2) == -1)
3044                                 netError();
3045                 } else {
3046                         if (pad_buf1) {
3047                                 psxBios_PADpoll(1);
3048                         }
3049
3050                         if (pad_buf2) {
3051                                 psxBios_PADpoll(2);
3052                         }
3053                 }
3054
3055         if (psxHu32(0x1070) & 0x1) { // Vsync
3056                 if (RcEV[3][1].status == EvStACTIVE) {
3057                         softCall(RcEV[3][1].fhandler);
3058 //                      hwWrite32(0x1f801070, ~(1));
3059                 }
3060         }
3061
3062         if (psxHu32(0x1070) & 0x70) { // Rcnt 0,1,2
3063                 int i;
3064
3065                 for (i = 0; i < 3; i++) {
3066                         if (psxHu32(0x1070) & (1 << (i + 4))) {
3067                                 if (RcEV[i][1].status == EvStACTIVE) {
3068                                         softCall(RcEV[i][1].fhandler);
3069                                 }
3070                                 psxHwWrite32(0x1f801070, ~(1 << (i + 4)));
3071                         }
3072                 }
3073         }
3074 }
3075
3076 void psxBiosException() {
3077         int i;
3078
3079         switch (psxRegs.CP0.n.Cause & 0x3c) {
3080                 case 0x00: // Interrupt
3081 #ifdef PSXCPU_LOG
3082 //                      PSXCPU_LOG("interrupt\n");
3083 #endif
3084                         SaveRegs();
3085
3086                         sp = psxMu32(0x6c80); // create new stack for interrupt handlers
3087
3088                         biosInterrupt();
3089
3090                         for (i = 0; i < 8; i++) {
3091                                 if (SysIntRP[i]) {
3092                                         u32 *queue = (u32 *)PSXM(SysIntRP[i]);
3093
3094                                         s0 = queue[2];
3095                                         softCall(queue[1]);
3096                                 }
3097                         }
3098
3099                         if (jmp_int != NULL) {
3100                                 int i;
3101
3102                                 psxHwWrite32(0x1f801070, 0xffffffff);
3103
3104                                 ra = jmp_int[0];
3105                                 sp = jmp_int[1];
3106                                 fp = jmp_int[2];
3107                                 for (i = 0; i < 8; i++) // s0-s7
3108                                          psxRegs.GPR.r[16 + i] = jmp_int[3 + i];
3109                                 gp = jmp_int[11];
3110
3111                                 v0 = 1;
3112                                 pc0 = ra;
3113                                 return;
3114                         }
3115                         psxHwWrite16(0x1f801070, 0);
3116                         break;
3117
3118                 case 0x20: // Syscall
3119 #ifdef PSXCPU_LOG
3120                         PSXCPU_LOG("syscall exp %x\n", a0);
3121 #endif
3122                         switch (a0) {
3123                                 case 1: // EnterCritical - disable irq's
3124                                         /* Fixes Medievil 2 not loading up new game, Digimon World not booting up and possibly others */
3125                                         v0 = (psxRegs.CP0.n.Status & 0x404) == 0x404;
3126                                         psxRegs.CP0.n.Status &= ~0x404;
3127                                         break;
3128
3129                                 case 2: // ExitCritical - enable irq's
3130                                         psxRegs.CP0.n.Status |= 0x404;
3131                                         break;
3132                         }
3133                         pc0 = psxRegs.CP0.n.EPC + 4;
3134
3135                         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
3136                                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
3137                         return;
3138
3139                 default:
3140 #ifdef PSXCPU_LOG
3141                         PSXCPU_LOG("unknown bios exception!\n");
3142 #endif
3143                         break;
3144         }
3145
3146         pc0 = psxRegs.CP0.n.EPC;
3147         if (psxRegs.CP0.n.Cause & 0x80000000) pc0+=4;
3148
3149         psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
3150                                                   ((psxRegs.CP0.n.Status & 0x3c) >> 2);
3151 }
3152
3153 #define bfreeze(ptr, size) { \
3154         if (Mode == 1) memcpy(&psxR[base], ptr, size); \
3155         if (Mode == 0) memcpy(ptr, &psxR[base], size); \
3156         base += size; \
3157 }
3158
3159 #define bfreezes(ptr) bfreeze(ptr, sizeof(ptr))
3160 #define bfreezel(ptr) bfreeze(ptr, sizeof(*ptr))
3161
3162 #define bfreezepsxMptr(ptr, type) { \
3163         if (Mode == 1) { \
3164                 if (ptr) psxRu32ref(base) = SWAPu32((s8 *)(ptr) - psxM); \
3165                 else psxRu32ref(base) = 0; \
3166         } else { \
3167                 if (psxRu32(base) != 0) ptr = (type *)(psxM + psxRu32(base)); \
3168                 else (ptr) = NULL; \
3169         } \
3170         base += sizeof(u32); \
3171 }
3172
3173 void psxBiosFreeze(int Mode) {
3174         u32 base = 0x40000;
3175
3176         bfreezepsxMptr(jmp_int, u32);
3177         bfreezepsxMptr(pad_buf, int);
3178         bfreezepsxMptr(pad_buf1, char);
3179         bfreezepsxMptr(pad_buf2, char);
3180         bfreezepsxMptr(heap_addr, u32);
3181         bfreezel(&pad_buf1len);
3182         bfreezel(&pad_buf2len);
3183         bfreezes(regs);
3184         bfreezes(SysIntRP);
3185         bfreezel(&CardState);
3186         bfreezes(Thread);
3187         bfreezel(&CurThread);
3188         bfreezes(FDesc);
3189         bfreezel(&card_active_chan);
3190 }