| 1 | #include <stdlib.h> |
| 2 | #include <stdarg.h> |
| 3 | |
| 4 | #define u8 unsigned char |
| 5 | #define u16 unsigned short |
| 6 | #define u32 unsigned int |
| 7 | |
| 8 | #define noinline __attribute__((noinline)) |
| 9 | #define _packed __attribute__((packed)) |
| 10 | |
| 11 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
| 12 | |
| 13 | #include "edos.h" |
| 14 | #include "asmtools.h" |
| 15 | |
| 16 | extern u16 start_hvc; |
| 17 | |
| 18 | #define GFX_DATA_PORT 0xC00000 |
| 19 | #define GFX_CTRL_PORT 0xC00004 |
| 20 | |
| 21 | #define TILE_MEM_END 0xB000 |
| 22 | |
| 23 | #define FONT_LEN 128 |
| 24 | #define TILE_FONT_BASE (TILE_MEM_END / 32 - FONT_LEN) |
| 25 | |
| 26 | /* note: using ED menu's layout here.. */ |
| 27 | #define WPLANE (TILE_MEM_END + 0x0000) |
| 28 | #define HSCRL (TILE_MEM_END + 0x0800) |
| 29 | #define SLIST (TILE_MEM_END + 0x0C00) |
| 30 | #define APLANE (TILE_MEM_END + 0x1000) |
| 31 | #define BPLANE (TILE_MEM_END + 0x3000) |
| 32 | |
| 33 | #define read8(a) \ |
| 34 | *((volatile u8 *) (a)) |
| 35 | #define read16(a) \ |
| 36 | *((volatile u16 *) (a)) |
| 37 | #define read32(a) \ |
| 38 | *((volatile u32 *) (a)) |
| 39 | #define write16(a, d) \ |
| 40 | *((volatile u16 *) (a)) = (d) |
| 41 | #define write32(a, d) \ |
| 42 | *((volatile u32 *) (a)) = (d) |
| 43 | |
| 44 | #define GFX_WRITE_VRAM_ADDR(adr) \ |
| 45 | (((0x4000 | ((adr) & 0x3FFF)) << 16) | ((adr) >> 14) | 0x00) |
| 46 | #define GFX_WRITE_VSRAM_ADDR(adr) \ |
| 47 | (((0x4000 | ((adr) & 0x3FFF)) << 16) | ((adr) >> 14) | 0x10) |
| 48 | |
| 49 | enum { |
| 50 | VDP_MODE1 = 0x00, |
| 51 | VDP_MODE2 = 0x01, |
| 52 | VDP_BACKDROP = 0x07, |
| 53 | VDP_MODE3 = 0x0b, |
| 54 | VDP_MODE4 = 0x0c, |
| 55 | VDP_AUTOINC = 0x0f, |
| 56 | VDP_SCROLLSZ = 0x10, |
| 57 | }; |
| 58 | |
| 59 | /* cell counts */ |
| 60 | #define LEFT_BORDER 1 /* lame TV */ |
| 61 | #define PLANE_W 64 |
| 62 | #define PLANE_H 32 |
| 63 | #define CSCREEN_H 28 |
| 64 | |
| 65 | static noinline void VDP_drawTextML(const char *str, u16 plane_base, |
| 66 | u16 x, u16 y) |
| 67 | { |
| 68 | const u8 *src = (const u8 *)str; |
| 69 | u16 basetile = 0; |
| 70 | int max_len = 40 - LEFT_BORDER; |
| 71 | int len; |
| 72 | u32 addr; |
| 73 | |
| 74 | x += LEFT_BORDER; |
| 75 | |
| 76 | for (len = 0; str[len] && len < max_len; len++) |
| 77 | ; |
| 78 | if (len > (PLANE_W - x)) |
| 79 | len = PLANE_W - x; |
| 80 | |
| 81 | addr = plane_base + ((x + (PLANE_W * y)) << 1); |
| 82 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(addr)); |
| 83 | |
| 84 | while (len-- > 0) { |
| 85 | write16(GFX_DATA_PORT, |
| 86 | basetile | ((*src++) - 32 + TILE_FONT_BASE)); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | static int printf_ypos; |
| 91 | |
| 92 | static void printf_line(int x, const char *buf) |
| 93 | { |
| 94 | u32 addr; |
| 95 | int i; |
| 96 | |
| 97 | VDP_drawTextML(buf, APLANE, x, printf_ypos++ & (PLANE_H - 1)); |
| 98 | |
| 99 | if (printf_ypos >= CSCREEN_H) { |
| 100 | /* clear next line */ |
| 101 | addr = APLANE; |
| 102 | addr += (PLANE_W * (printf_ypos & (PLANE_H - 1))) << 1; |
| 103 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(addr)); |
| 104 | for (i = 0; i < 40 / 2; i++) |
| 105 | write32(GFX_DATA_PORT, 0); |
| 106 | |
| 107 | /* scroll plane */ |
| 108 | write32(GFX_CTRL_PORT, GFX_WRITE_VSRAM_ADDR(0)); |
| 109 | write16(GFX_DATA_PORT, (printf_ypos - CSCREEN_H + 1) * 8); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | #define PRINTF_LEN 40 |
| 114 | |
| 115 | static noinline int printf(const char *fmt, ...) |
| 116 | { |
| 117 | static const char hexchars[] = "0123456789abcdef"; |
| 118 | static int printf_xpos; |
| 119 | char c, buf[PRINTF_LEN + 11 + 1]; |
| 120 | const char *s; |
| 121 | va_list ap; |
| 122 | int ival; |
| 123 | u32 uval; |
| 124 | int d = 0; |
| 125 | int i, j; |
| 126 | |
| 127 | va_start(ap, fmt); |
| 128 | for (d = 0; *fmt; ) { |
| 129 | int prefix0 = 0; |
| 130 | int fwidth = 0; |
| 131 | |
| 132 | c = *fmt++; |
| 133 | if (d < PRINTF_LEN) |
| 134 | buf[d] = c; |
| 135 | |
| 136 | if (c != '%') { |
| 137 | if (c == '\n') { |
| 138 | buf[d] = 0; |
| 139 | printf_line(printf_xpos, buf); |
| 140 | d = 0; |
| 141 | printf_xpos = 0; |
| 142 | continue; |
| 143 | } |
| 144 | d++; |
| 145 | continue; |
| 146 | } |
| 147 | if (d >= PRINTF_LEN) |
| 148 | continue; |
| 149 | |
| 150 | if (*fmt == '0') { |
| 151 | prefix0 = 1; |
| 152 | fmt++; |
| 153 | } |
| 154 | |
| 155 | while ('1' <= *fmt && *fmt <= '9') { |
| 156 | fwidth = fwidth * 10 + *fmt - '0'; |
| 157 | fmt++; |
| 158 | } |
| 159 | |
| 160 | switch (*fmt++) { |
| 161 | case '%': |
| 162 | d++; |
| 163 | break; |
| 164 | case 'd': |
| 165 | case 'i': |
| 166 | ival = va_arg(ap, int); |
| 167 | if (ival < 0) { |
| 168 | buf[d++] = '-'; |
| 169 | ival = -ival; |
| 170 | } |
| 171 | for (i = 1000000000; i >= 10; i /= 10) |
| 172 | if (ival >= i) |
| 173 | break; |
| 174 | for (; i >= 10; i /= 10) { |
| 175 | buf[d++] = '0' + ival / i; |
| 176 | ival %= i; |
| 177 | } |
| 178 | buf[d++] = '0' + ival; |
| 179 | break; |
| 180 | case 'x': |
| 181 | uval = va_arg(ap, int); |
| 182 | while (fwidth > 1 && uval < (1 << (fwidth - 1) * 4)) { |
| 183 | buf[d++] = prefix0 ? '0' : ' '; |
| 184 | fwidth--; |
| 185 | } |
| 186 | for (j = 1; j < 8 && uval >= (1 << j * 4); j++) |
| 187 | ; |
| 188 | for (j--; j >= 0; j--) |
| 189 | buf[d++] = hexchars[(uval >> j * 4) & 0x0f]; |
| 190 | break; |
| 191 | case 's': |
| 192 | s = va_arg(ap, char *); |
| 193 | while (*s && d < PRINTF_LEN) |
| 194 | buf[d++] = *s++; |
| 195 | break; |
| 196 | default: |
| 197 | // don't handle, for now |
| 198 | d++; |
| 199 | va_arg(ap, void *); |
| 200 | break; |
| 201 | } |
| 202 | } |
| 203 | buf[d] = 0; |
| 204 | va_end(ap); |
| 205 | |
| 206 | if (d != 0) { |
| 207 | // line without \n |
| 208 | VDP_drawTextML(buf, APLANE, printf_xpos, |
| 209 | printf_ypos & (PLANE_H - 1)); |
| 210 | printf_xpos += d; |
| 211 | } |
| 212 | |
| 213 | return d; // wrong.. |
| 214 | } |
| 215 | |
| 216 | static const char *exc_names[] = { |
| 217 | NULL, |
| 218 | NULL, |
| 219 | "Bus Error", |
| 220 | "Address Error", |
| 221 | "Illegal Instruction", |
| 222 | "Zero Divide", |
| 223 | "CHK Instruction", |
| 224 | "TRAPV Instruction", |
| 225 | "Privilege Violation", /* 8 8 */ |
| 226 | "Trace", |
| 227 | "Line 1010 Emulator", |
| 228 | "Line 1111 Emulator", |
| 229 | NULL, |
| 230 | NULL, |
| 231 | NULL, |
| 232 | "Uninitialized Interrupt", |
| 233 | NULL, /* 10 16 */ |
| 234 | NULL, |
| 235 | NULL, |
| 236 | NULL, |
| 237 | NULL, |
| 238 | NULL, |
| 239 | NULL, |
| 240 | NULL, |
| 241 | "Spurious Interrupt", /* 18 24 */ |
| 242 | "l1 irq", |
| 243 | "l2 irq", |
| 244 | "l3 irq", |
| 245 | "l4 irq", |
| 246 | "l5 irq", |
| 247 | "l6 irq", |
| 248 | "l7 irq", |
| 249 | }; |
| 250 | |
| 251 | struct exc_frame { |
| 252 | u32 dr[8]; |
| 253 | u32 ar[8]; |
| 254 | u16 ecxnum; // from handler |
| 255 | union { |
| 256 | struct { |
| 257 | u16 sr; |
| 258 | u32 pc; |
| 259 | } g _packed; |
| 260 | struct { |
| 261 | u16 fc; |
| 262 | u32 addr; |
| 263 | u16 ir; |
| 264 | u16 sr; |
| 265 | u32 pc; |
| 266 | } bae _packed; // bus/address error frame |
| 267 | }; |
| 268 | } _packed; |
| 269 | |
| 270 | int xtttt(void) { return sizeof(struct exc_frame); } |
| 271 | |
| 272 | void exception(const struct exc_frame *f) |
| 273 | { |
| 274 | int i; |
| 275 | |
| 276 | while (read16(GFX_CTRL_PORT) & 2) |
| 277 | ; |
| 278 | write16(GFX_CTRL_PORT, 0x8000 | (VDP_MODE1 << 8) | 0x04); |
| 279 | write16(GFX_CTRL_PORT, 0x8000 | (VDP_MODE2 << 8) | 0x44); |
| 280 | /* adjust scroll */ |
| 281 | write32(GFX_CTRL_PORT, GFX_WRITE_VSRAM_ADDR(0)); |
| 282 | write16(GFX_DATA_PORT, |
| 283 | printf_ypos >= CSCREEN_H ? |
| 284 | (printf_ypos - CSCREEN_H + 1) * 8 : 0); |
| 285 | |
| 286 | printf("exception %i ", f->ecxnum); |
| 287 | if (f->ecxnum < ARRAY_SIZE(exc_names) && exc_names[f->ecxnum] != NULL) |
| 288 | printf("(%s)", exc_names[f->ecxnum]); |
| 289 | if (f->ecxnum < 4) |
| 290 | printf(" (%s)", (f->bae.fc & 0x10) ? "r" : "w"); |
| 291 | printf(" \n"); |
| 292 | |
| 293 | if (f->ecxnum < 4) { |
| 294 | printf(" PC: %08x SR: %04x \n", f->bae.pc, f->bae.sr); |
| 295 | printf("addr: %08x IR: %04x FC: %02x \n", |
| 296 | f->bae.addr, f->bae.ir, f->bae.fc); |
| 297 | } |
| 298 | else { |
| 299 | printf(" PC: %08x SR: %04x \n", f->g.pc, f->g.sr); |
| 300 | } |
| 301 | for (i = 0; i < 8; i++) |
| 302 | printf(" D%d: %08x A%d: %08x \n", i, f->dr[i], i, f->ar[i]); |
| 303 | printf(" \n"); |
| 304 | } |
| 305 | |
| 306 | void vbl(void) |
| 307 | { |
| 308 | } |
| 309 | |
| 310 | static int usb_read_while_ready(OsRoutine *ed, |
| 311 | void *buf_, unsigned int maxlen) |
| 312 | { |
| 313 | u8 *buf = buf_; |
| 314 | unsigned int r = 0; |
| 315 | |
| 316 | while (ed->usbRdReady() && r < maxlen) |
| 317 | buf[r++] = ed->usbReadByte(); |
| 318 | |
| 319 | return r; |
| 320 | } |
| 321 | |
| 322 | static int usb_read(OsRoutine *ed, void *buf_, unsigned int maxlen) |
| 323 | { |
| 324 | u8 *buf = buf_; |
| 325 | unsigned int r = 0; |
| 326 | |
| 327 | while (r < maxlen) |
| 328 | buf[r++] = ed->usbReadByte(); |
| 329 | |
| 330 | return r; |
| 331 | } |
| 332 | |
| 333 | static int usb_write(OsRoutine *ed, const void *buf_, unsigned int maxlen) |
| 334 | { |
| 335 | const u8 *buf = buf_; |
| 336 | unsigned int r = 0; |
| 337 | |
| 338 | while (r < maxlen) |
| 339 | ed->usbWriteByte(buf[r++]); |
| 340 | |
| 341 | return r; |
| 342 | } |
| 343 | |
| 344 | /* |
| 345 | * TH = 1 : ?1CBRLDU 3-button pad return value (not read) |
| 346 | * TH = 0 : ?0SA00DU 3-button pad return value |
| 347 | * TH = 1 : ?1CBRLDU 3-button pad return value |
| 348 | * TH = 0 : ?0SA0000 D3-0 are forced to '0' |
| 349 | * TH = 1 : ?1CBMXYZ Extra buttons returned in D3-0 |
| 350 | * TH = 0 : ?0SA1111 D3-0 are forced to '1' |
| 351 | */ |
| 352 | static void test_joy_latency(int *min_out, int *max_out) |
| 353 | { |
| 354 | u8 rbuf[8 * 6]; |
| 355 | int min = 8; |
| 356 | int max = 0; |
| 357 | int i, v, b, e; |
| 358 | |
| 359 | for (i = 0; i < 64; i++) { |
| 360 | read_joy_responses(rbuf); |
| 361 | |
| 362 | for (b = 0; b < 8 * 4; b++) { |
| 363 | v = b & 7; |
| 364 | e = (b & 0x08) ? 0x0c : 0; |
| 365 | if ((rbuf[b] & 0x0c) == e) { |
| 366 | if (v < min) |
| 367 | min = v; |
| 368 | } |
| 369 | else if (v > max) |
| 370 | max = v; |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | /* print out the last test */ |
| 375 | for (b = 0; b < 8 * 5; b++) { |
| 376 | printf(" %02x", rbuf[b]); |
| 377 | if ((b & 7) == 7) |
| 378 | printf("\n"); |
| 379 | } |
| 380 | printf("\n"); |
| 381 | |
| 382 | *min_out = min; |
| 383 | *max_out = max; |
| 384 | } |
| 385 | |
| 386 | static int do_test(OsRoutine *ed, u8 b3) |
| 387 | { |
| 388 | int min = 0, max = 0; |
| 389 | |
| 390 | switch (b3) |
| 391 | { |
| 392 | case 'j': |
| 393 | test_joy_latency(&min, &max); |
| 394 | printf("latency: %d - %d\n\n", min, max); |
| 395 | return 0; |
| 396 | default: |
| 397 | break; |
| 398 | } |
| 399 | |
| 400 | return -1; |
| 401 | } |
| 402 | |
| 403 | static int do_custom(OsRoutine *ed, u8 b3) |
| 404 | { |
| 405 | struct { |
| 406 | unsigned int addr; |
| 407 | unsigned int size; |
| 408 | } d; |
| 409 | |
| 410 | switch (b3) |
| 411 | { |
| 412 | case 'd': |
| 413 | usb_read(ed, &d, sizeof(d)); |
| 414 | ed->usbWriteByte('k'); |
| 415 | printf("sending %i bytes from %06x..\n", d.size, d.addr); |
| 416 | usb_write(ed, (void *)d.addr, d.size); |
| 417 | printf("done.\n"); |
| 418 | return 1; |
| 419 | default: |
| 420 | break; |
| 421 | } |
| 422 | |
| 423 | return -1; |
| 424 | } |
| 425 | |
| 426 | #define MTYPE_OS 0 |
| 427 | #define MTYPE_MD 1 |
| 428 | #define MTYPE_SSF 2 |
| 429 | #define MTYPE_CD 3 |
| 430 | #define MTYPE_SMS 4 |
| 431 | #define MTYPE_10M 5 |
| 432 | #define MTYPE_32X 6 |
| 433 | |
| 434 | static int do_run(OsRoutine *ed, u8 b3, int tas_sync) |
| 435 | { |
| 436 | u8 mapper = 0; |
| 437 | |
| 438 | switch (b3) |
| 439 | { |
| 440 | case 's': |
| 441 | mapper = MTYPE_SMS | (7 << 4); |
| 442 | break; |
| 443 | case 'm': |
| 444 | mapper = MTYPE_MD; |
| 445 | break; |
| 446 | case 'o': |
| 447 | mapper = MTYPE_OS; |
| 448 | break; |
| 449 | case 'c': |
| 450 | mapper = MTYPE_CD; |
| 451 | break; |
| 452 | case '3': |
| 453 | mapper = MTYPE_32X; |
| 454 | break; |
| 455 | case 'M': |
| 456 | mapper = MTYPE_10M; |
| 457 | break; |
| 458 | default: |
| 459 | return -1; |
| 460 | } |
| 461 | |
| 462 | printf("starting mapper %x..\n", mapper); |
| 463 | |
| 464 | while (read16(GFX_CTRL_PORT) & 2) |
| 465 | ; |
| 466 | ed->VDP_setReg(VDP_MODE1, 0x04); |
| 467 | ed->VDP_setReg(VDP_MODE2, 0x44); |
| 468 | |
| 469 | ed->usbWriteByte('k'); |
| 470 | |
| 471 | run_game(mapper, tas_sync); |
| 472 | /* should not get here.. */ |
| 473 | |
| 474 | return -1; |
| 475 | } |
| 476 | |
| 477 | int main() |
| 478 | { |
| 479 | OsRoutine *ed; |
| 480 | u8 buf[16]; |
| 481 | int len; |
| 482 | int i, d, ret; |
| 483 | |
| 484 | ed = (OsRoutine *) *(u32 *)0x1A0; |
| 485 | ed->memInitDmaCode(); |
| 486 | |
| 487 | ed->VDP_setReg(VDP_MODE1, 0x04); |
| 488 | ed->VDP_setReg(VDP_MODE2, 0x64); |
| 489 | ed->VDP_setReg(VDP_AUTOINC, 2); |
| 490 | ed->VDP_setReg(VDP_SCROLLSZ, 0x01); |
| 491 | |
| 492 | /* clear name tables */ |
| 493 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(APLANE)); |
| 494 | for (i = 0; i < PLANE_W * PLANE_H / 2; i++) |
| 495 | write32(GFX_DATA_PORT, 0); |
| 496 | |
| 497 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(BPLANE)); |
| 498 | for (i = 0; i < PLANE_W * PLANE_H / 2; i++) |
| 499 | write32(GFX_DATA_PORT, 0); |
| 500 | |
| 501 | /* scroll planes */ |
| 502 | write32(GFX_CTRL_PORT, GFX_WRITE_VSRAM_ADDR(0)); |
| 503 | write32(GFX_DATA_PORT, 0); |
| 504 | |
| 505 | /* note: relying on ED menu's font setup here.. */ |
| 506 | |
| 507 | printf("\n"); |
| 508 | printf("version: %02x, start_hvc: %04x\n", |
| 509 | read8(0xa10001), start_hvc); |
| 510 | printf("ED os/fw: %x/%x\n\n", ed->osGetOsVersion(), |
| 511 | ed->osGetFirmVersion()); |
| 512 | |
| 513 | for (;;) { |
| 514 | if (!ed->usbRdReady()) { |
| 515 | asm volatile("stop #0x2000"); |
| 516 | continue; |
| 517 | } |
| 518 | |
| 519 | buf[0] = ed->usbReadByte(); |
| 520 | if (buf[0] == ' ') |
| 521 | continue; |
| 522 | if (buf[0] != '*') { |
| 523 | d = 1; |
| 524 | goto bad_input; |
| 525 | } |
| 526 | |
| 527 | /* note: OS uses Twofgsr */ |
| 528 | buf[1] = ed->usbReadByte(); |
| 529 | switch (buf[1]) { |
| 530 | case 'T': |
| 531 | ed->usbWriteByte('k'); |
| 532 | break; |
| 533 | case 'g': |
| 534 | len = ed->usbReadByte() * 128; |
| 535 | printf("loading %d bytes.. ", len * 512); |
| 536 | ed->usbWriteByte('k'); |
| 537 | ed->usbReadDma((void *)0x200000, len); |
| 538 | ed->usbWriteByte('d'); |
| 539 | printf("done\n"); |
| 540 | break; |
| 541 | case 'r': |
| 542 | case 'R': |
| 543 | buf[2] = ed->usbReadByte(); |
| 544 | ret = do_run(ed, buf[2], buf[1] == 'R'); |
| 545 | if (ret != 0) { |
| 546 | d = 3; |
| 547 | goto bad_input; |
| 548 | } |
| 549 | printf("run returned??\n"); |
| 550 | break; |
| 551 | |
| 552 | /* custom */ |
| 553 | case 't': |
| 554 | buf[2] = ed->usbReadByte(); |
| 555 | ret = do_test(ed, buf[2]); |
| 556 | if (ret != 0) { |
| 557 | d = 3; |
| 558 | goto bad_input; |
| 559 | } |
| 560 | ed->usbWriteByte('k'); |
| 561 | break; |
| 562 | case 'x': |
| 563 | buf[2] = ed->usbReadByte(); |
| 564 | ret = do_custom(ed, buf[2]); |
| 565 | if (ret == 1) |
| 566 | break; |
| 567 | if (ret != 0) { |
| 568 | d = 3; |
| 569 | goto bad_input; |
| 570 | } |
| 571 | ed->usbWriteByte('k'); |
| 572 | break; |
| 573 | default: |
| 574 | d = 2; |
| 575 | goto bad_input; |
| 576 | } |
| 577 | |
| 578 | continue; |
| 579 | |
| 580 | bad_input: |
| 581 | ret = usb_read_while_ready(ed, buf + d, sizeof(buf) - d); |
| 582 | buf[d + ret] = 0; |
| 583 | printf("bad cmd: %s\n", buf); |
| 584 | /* consume all remaining data */ |
| 585 | while (ed->usbRdReady()) |
| 586 | usb_read_while_ready(ed, buf, sizeof(buf)); |
| 587 | |
| 588 | ed->usbWriteByte('b'); |
| 589 | } |
| 590 | |
| 591 | return 0; |
| 592 | } |
| 593 | |
| 594 | // vim:ts=4:sw=4:expandtab |