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comparison vdp.c @ 705:ce4046476abc

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Add description of cd register value to vr debugger command
author Michael Pavone <pavone@retrodev.com>
date Wed, 13 May 2015 19:19:43 -0700
parents d8a1fdec68fc
children 61faa298af07
comparison
equal deleted inserted replaced
704:1a14f5f6c6a1 705:ce4046476abc
205 uint16_t pattern = ((context->vdpmem[address + 4] << 8 | context->vdpmem[address + 5]) & 0x7FF) << 5; 205 uint16_t pattern = ((context->vdpmem[address + 4] << 8 | context->vdpmem[address + 5]) & 0x7FF) << 5;
206 printf("Sprite %d: X=%d(%d), Y=%d(%d), Width=%u, Height=%u, Link=%u, Pal=%u, Pri=%u, Pat=%X\n", current_index, x, x-128, y, y-128, width, height, link, pal, pri, pattern); 206 printf("Sprite %d: X=%d(%d), Y=%d(%d), Width=%u, Height=%u, Link=%u, Pal=%u, Pri=%u, Pat=%X\n", current_index, x, x-128, y, y-128, width, height, link, pal, pri, pattern);
207 current_index = link; 207 current_index = link;
208 count++; 208 count++;
209 } while (current_index != 0 && count < 80); 209 } while (current_index != 0 && count < 80);
210 }
211
212 #define VRAM_READ 0 //0000
213 #define VRAM_WRITE 1 //0001
214 //2 would trigger register write 0010
215 #define CRAM_WRITE 3 //0011
216 #define VSRAM_READ 4 //0100
217 #define VSRAM_WRITE 5//0101
218 //6 would trigger regsiter write 0110
219 //7 is a mystery
220 #define CRAM_READ 8 //1000
221 //9 is also a mystery //1001
222 //A would trigger register write 1010
223 //B is a mystery 1011
224 #define VRAM_READ8 0xC //1100
225 //D is a mystery 1101
226 //E would trigger register write 1110
227 //F is a mystery 1111
228 #define DMA_START 0x20
229
230 const char * cd_name(uint8_t cd)
231 {
232 switch (cd & 0xF)
233 {
234 case VRAM_READ:
235 return "VRAM read";
236 case VRAM_WRITE:
237 return "VRAM write";
238 case CRAM_WRITE:
239 return "CRAM write";
240 case VSRAM_READ:
241 return "VSRAM read";
242 case VSRAM_WRITE:
243 return "VSRAM write";
244 case VRAM_READ8:
245 return "VRAM read (undocumented 8-bit mode)";
246 default:
247 return "invalid";
248 }
210 } 249 }
211 250
212 void vdp_print_reg_explain(vdp_context * context) 251 void vdp_print_reg_explain(vdp_context * context)
213 { 252 {
214 char * hscroll[] = {"full", "7-line", "cell", "line"}; 253 char * hscroll[] = {"full", "7-line", "cell", "line"};
259 context->regs[REG_DMASRC_H], 298 context->regs[REG_DMASRC_H],
260 context->regs[REG_DMASRC_H] << 17 | context->regs[REG_DMASRC_M] << 9 | context->regs[REG_DMASRC_L] << 1, 299 context->regs[REG_DMASRC_H] << 17 | context->regs[REG_DMASRC_M] << 9 | context->regs[REG_DMASRC_L] << 1,
261 src_types[context->regs[REG_DMASRC_H] >> 6 & 3]); 300 src_types[context->regs[REG_DMASRC_H] >> 6 & 3]);
262 printf("\n**Internal Group**\n" 301 printf("\n**Internal Group**\n"
263 "Address: %X\n" 302 "Address: %X\n"
264 "CD: %X\n" 303 "CD: %X - %s\n"
265 "Pending: %s\n" 304 "Pending: %s\n"
266 "VCounter: %d\n" 305 "VCounter: %d\n"
267 "HCounter: %d\n", 306 "HCounter: %d\n",
268 context->address, context->cd, (context->flags & FLAG_PENDING) ? "true" : "false", 307 context->address, context->cd, cd_name(context->cd), (context->flags & FLAG_PENDING) ? "true" : "false",
269 context->vcounter, context->hslot*2); 308 context->vcounter, context->hslot*2);
270 309
271 //TODO: Window Group, DMA Group 310 //TODO: Window Group, DMA Group
272 } 311 }
273 312
413 context->cram[addr] = value; 452 context->cram[addr] = value;
414 context->colors[addr] = color_map[value & 0xEEE]; 453 context->colors[addr] = color_map[value & 0xEEE];
415 context->colors[addr + CRAM_SIZE] = color_map[(value & 0xEEE) | FBUF_SHADOW]; 454 context->colors[addr + CRAM_SIZE] = color_map[(value & 0xEEE) | FBUF_SHADOW];
416 context->colors[addr + CRAM_SIZE*2] = color_map[(value & 0xEEE) | FBUF_HILIGHT]; 455 context->colors[addr + CRAM_SIZE*2] = color_map[(value & 0xEEE) | FBUF_HILIGHT];
417 } 456 }
418
419 #define VRAM_READ 0 //0000
420 #define VRAM_WRITE 1 //0001
421 //2 would trigger register write 0010
422 #define CRAM_WRITE 3 //0011
423 #define VSRAM_READ 4 //0100
424 #define VSRAM_WRITE 5//0101
425 //6 would trigger regsiter write 0110
426 //7 is a mystery
427 #define CRAM_READ 8 //1000
428 //9 is also a mystery //1001
429 //A would trigger register write 1010
430 //B is a mystery 1011
431 #define VRAM_READ8 0xC //1100
432 //D is a mystery 1101
433 //E would trigger register write 1110
434 //F is a mystery 1111
435 #define DMA_START 0x20
436 457
437 void external_slot(vdp_context * context) 458 void external_slot(vdp_context * context)
438 { 459 {
439 fifo_entry * start = context->fifo + context->fifo_read; 460 fifo_entry * start = context->fifo + context->fifo_read;
440 /*if (context->flags2 & FLAG2_READ_PENDING) { 461 /*if (context->flags2 & FLAG2_READ_PENDING) {