39ac9835 |
1 | #include <stdlib.h> |
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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)) |
39ac9835 |
9 | #define _packed __attribute__((packed)) |
10 | |
11 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
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12 | |
13 | #include "edos.h" |
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14 | #include "asmtools.h" |
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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 | |
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31 | #define read8(a) \ |
32 | *((volatile u8 *) (a)) |
33 | #define read16(a) \ |
34 | *((volatile u16 *) (a)) |
35 | #define read32(a) \ |
36 | *((volatile u32 *) (a)) |
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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 | |
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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)); |
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107 | write16(GFX_DATA_PORT, (printf_ypos - CSCREEN_H + 1) * 8); |
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108 | } |
109 | } |
110 | |
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111 | #define PRINTF_LEN 40 |
112 | |
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113 | static noinline int printf(const char *fmt, ...) |
114 | { |
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115 | static const char hexchars[] = "0123456789abcdef"; |
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116 | static int printf_xpos; |
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117 | char c, buf[PRINTF_LEN + 11 + 1]; |
118 | const char *s; |
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119 | va_list ap; |
120 | int ival; |
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121 | u32 uval; |
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122 | int d = 0; |
51f3a685 |
123 | int i, j; |
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124 | |
125 | va_start(ap, fmt); |
126 | for (d = 0; *fmt; ) { |
51f3a685 |
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') { |
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136 | buf[d] = 0; |
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137 | printf_line(printf_xpos, buf); |
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138 | d = 0; |
139 | printf_xpos = 0; |
140 | continue; |
141 | } |
142 | d++; |
143 | continue; |
144 | } |
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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 | } |
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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; |
51f3a685 |
178 | case 'x': |
179 | uval = va_arg(ap, int); |
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180 | while (fwidth > 1 && uval < (1 << (fwidth - 1) * 4)) { |
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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; |
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189 | case 's': |
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190 | s = va_arg(ap, char *); |
191 | while (*s && d < PRINTF_LEN) |
192 | buf[d++] = *s++; |
193 | break; |
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194 | default: |
195 | // don't handle, for now |
196 | d++; |
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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 | |
39ac9835 |
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) |
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271 | { |
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272 | int i; |
273 | |
274 | while (read16(GFX_CTRL_PORT) & 2) |
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275 | ; |
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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"); |
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302 | } |
303 | |
304 | void vbl(void) |
305 | { |
306 | } |
307 | |
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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 | |
df43aeea |
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 | |
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428 | int main() |
429 | { |
430 | OsRoutine *ed; |
51f3a685 |
431 | u8 buf[16]; |
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432 | int len; |
51f3a685 |
433 | int i, d, ret; |
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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 | |
df43aeea |
454 | printf("version: %02x\n", read8(0xa10001)); |
455 | printf("ED os/fw: %x/%x\n\n", ed->osGetOsVersion(), |
456 | ed->osGetFirmVersion()); |
457 | |
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458 | for (;;) { |
51f3a685 |
459 | if (!ed->usbRdReady()) { |
ab6ed3c4 |
460 | asm volatile("stop #0x2000"); |
51f3a685 |
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; |
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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 | |
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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)); |
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520 | |
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521 | ed->usbWriteByte('b'); |
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522 | } |
523 | |
524 | return 0; |
525 | } |
526 | |
527 | // vim:ts=4:sw=4:expandtab |