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comparison lc8951.c @ 2080:bafb757e1cd2

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Implement CD audio
author Michael Pavone <pavone@retrodev.com>
date Wed, 02 Feb 2022 01:10:07 -0800
parents c69e42444f96
children bb478feccca2
comparison
equal deleted inserted replaced
2079:5a2b759f6b2d 2080:bafb757e1cd2
147 //context->decode_end = context->cycle + 2352 * context->clock_step * 4; 147 //context->decode_end = context->cycle + 2352 * context->clock_step * 4;
148 break; 148 break;
149 case RESET: 149 case RESET:
150 context->comin_count = 0; 150 context->comin_count = 0;
151 context->regs[IFSTAT] = 0xFF; 151 context->regs[IFSTAT] = 0xFF;
152 context->ifctrl = 0;
153 context->ctrl0 = 0;
154 context->ctrl1 = 0;
152 break; 155 break;
153 default: 156 default:
154 break; 157 break;
155 } 158 }
156 if (context->ar != SBOUT) { 159 if (context->ar != SBOUT) {
275 if (context->ctrl0 & BIT_WRRQ) { 278 if (context->ctrl0 & BIT_WRRQ) {
276 uint16_t block_start = current_write_addr - 2352; 279 uint16_t block_start = current_write_addr - 2352;
277 context->regs[PTL] = block_start; 280 context->regs[PTL] = block_start;
278 context->regs[PTH] = block_start >> 8; 281 context->regs[PTH] = block_start >> 8;
279 } 282 }
280 printf("Decoding block starting at %X\n", context->regs[PTL] | (context->regs[PTH] << 8)); 283 printf("Decoding block starting at %X (WRRQ: %d)\n", context->regs[PTL] | (context->regs[PTH] << 8), !!(context->ctrl0 & BIT_WRRQ));
281 //TODO: Datasheet has some hints about how long decoding takes in the form of how long DECI is asserted 284 //TODO: Datasheet has some hints about how long decoding takes in the form of how long DECI is asserted
282 context->decode_end = context->cycle + 2352 * context->clock_step * 4; 285 context->decode_end = context->cycle + 2352 * context->clock_step * 4;
283 } 286 }
284 } 287 }
285 if (sector_offset >= 12 && sector_offset < 16) { 288 if (sector_offset >= 12 && sector_offset < 16) {