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