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comparison blastem.c @ 534:c641006da28e

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Properly sync hardware when frame end is reached during DMA
author Mike Pavone <pavone@retrodev.com>
date Thu, 13 Feb 2014 00:10:36 -0800
parents 46a60bb5f785
children a3afee2271ce 66cc60215e5c
comparison
equal deleted inserted replaced
533:e7df1b24394a 534:c641006da28e
317 gen->bus_busy = 1; 317 gen->bus_busy = 1;
318 while (vdp_data_port_write(v_context, value) < 0) { 318 while (vdp_data_port_write(v_context, value) < 0) {
319 while(v_context->flags & FLAG_DMA_RUN) { 319 while(v_context->flags & FLAG_DMA_RUN) {
320 vdp_run_dma_done(v_context, mclks_per_frame); 320 vdp_run_dma_done(v_context, mclks_per_frame);
321 if (v_context->cycles >= mclks_per_frame) { 321 if (v_context->cycles >= mclks_per_frame) {
322 if (!headless) { 322 context->current_cycle = v_context->cycles / MCLKS_PER_68K;
323 //printf("reached frame end | 68K Cycles: %d, MCLK Cycles: %d\n", context->current_cycle, v_context->cycles); 323 if (context->current_cycle * MCLKS_PER_68K < mclks_per_frame) {
324 wait_render_frame(v_context, frame_limit); 324 ++context->current_cycle;
325 } else if(exit_after){
326 --exit_after;
327 if (!exit_after) {
328 exit(0);
329 }
330 } 325 }
331 vdp_adjust_cycles(v_context, mclks_per_frame); 326 sync_components(context, 0);
332 genesis_context * gen = context->system;
333 io_adjust_cycles(gen->ports, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
334 io_adjust_cycles(gen->ports+1, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
335 io_adjust_cycles(gen->ports+2, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
336 if (busack_cycle != CYCLE_NEVER) {
337 if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) {
338 busack_cycle -= mclks_per_frame/MCLKS_PER_68K;
339 } else {
340 busack_cycle = CYCLE_NEVER;
341 busack = new_busack;
342 }
343 }
344 } 327 }
345 } 328 }
346 //context->current_cycle = v_context->cycles / MCLKS_PER_68K; 329 //context->current_cycle = v_context->cycles / MCLKS_PER_68K;
347 } 330 }
348 } else if(vdp_port < 8) { 331 } else if(vdp_port < 8) {
351 if (blocked) { 334 if (blocked) {
352 while (blocked) { 335 while (blocked) {
353 while(v_context->flags & FLAG_DMA_RUN) { 336 while(v_context->flags & FLAG_DMA_RUN) {
354 vdp_run_dma_done(v_context, mclks_per_frame); 337 vdp_run_dma_done(v_context, mclks_per_frame);
355 if (v_context->cycles >= mclks_per_frame) { 338 if (v_context->cycles >= mclks_per_frame) {
356 if (!headless) { 339 context->current_cycle = v_context->cycles / MCLKS_PER_68K;
357 wait_render_frame(v_context, frame_limit); 340 if (context->current_cycle * MCLKS_PER_68K < mclks_per_frame) {
358 } else if(exit_after){ 341 ++context->current_cycle;
359 --exit_after;
360 if (!exit_after) {
361 exit(0);
362 }
363 } 342 }
364 vdp_adjust_cycles(v_context, mclks_per_frame); 343 sync_components(context, 0);
365 genesis_context * gen = context->system;
366 io_adjust_cycles(gen->ports, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
367 io_adjust_cycles(gen->ports+1, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
368 io_adjust_cycles(gen->ports+2, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K);
369 if (busack_cycle != CYCLE_NEVER) {
370 if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) {
371 busack_cycle -= mclks_per_frame/MCLKS_PER_68K;
372 } else {
373 busack_cycle = CYCLE_NEVER;
374 busack = new_busack;
375 }
376 }
377 } 344 }
378 } 345 }
379 if (blocked < 0) { 346 if (blocked < 0) {
380 blocked = vdp_control_port_write(v_context, value); 347 blocked = vdp_control_port_write(v_context, value);
381 } else { 348 } else {