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comparison genesis.c @ 1371:5b20840711c1

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Remove HINT_FUDGE and make a small adjustment to how VDP syncs with rest of system instead. Worse results on CRAM dot issue, but much less of a hack
author Michael Pavone <pavone@retrodev.com>
date Tue, 23 May 2017 21:09:38 -0700
parents 30123ca5856c
children d78ef6f4fba2
comparison
equal deleted inserted replaced
1370:eaca4443e831 1371:5b20840711c1
297 } 297 }
298 } 298 }
299 //context->current_cycle = v_context->cycles; 299 //context->current_cycle = v_context->cycles;
300 } 300 }
301 } else if(vdp_port < 8) { 301 } else if(vdp_port < 8) {
302 vdp_run_context_full(v_context, context->current_cycle);
302 blocked = vdp_control_port_write(v_context, value); 303 blocked = vdp_control_port_write(v_context, value);
303 if (blocked) { 304 if (blocked) {
304 while (blocked) { 305 while (blocked) {
305 while(v_context->flags & FLAG_DMA_RUN) { 306 while(v_context->flags & FLAG_DMA_RUN) {
306 vdp_run_dma_done(v_context, gen->frame_end); 307 vdp_run_dma_done(v_context, gen->frame_end);
371 if (vdp_port & 0xE0) { 372 if (vdp_port & 0xE0) {
372 fatal_error("machine freeze due to write to Z80 address %X\n", 0x7F00 | vdp_port); 373 fatal_error("machine freeze due to write to Z80 address %X\n", 0x7F00 | vdp_port);
373 } 374 }
374 if (vdp_port < 0x10) { 375 if (vdp_port < 0x10) {
375 //These probably won't currently interact well with the 68K accessing the VDP 376 //These probably won't currently interact well with the 68K accessing the VDP
376 vdp_run_context(gen->vdp, context->current_cycle);
377 if (vdp_port < 4) { 377 if (vdp_port < 4) {
378 vdp_run_context(gen->vdp, context->current_cycle);
378 vdp_data_port_write(gen->vdp, value << 8 | value); 379 vdp_data_port_write(gen->vdp, value << 8 | value);
379 } else if (vdp_port < 8) { 380 } else if (vdp_port < 8) {
381 vdp_run_context_full(gen->vdp, context->current_cycle);
380 vdp_control_port_write(gen->vdp, value << 8 | value); 382 vdp_control_port_write(gen->vdp, value << 8 | value);
381 } else { 383 } else {
382 fatal_error("Illegal write to HV Counter port %X\n", vdp_port); 384 fatal_error("Illegal write to HV Counter port %X\n", vdp_port);
383 } 385 }
384 } else if (vdp_port < 0x18) { 386 } else if (vdp_port < 0x18) {