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comparison vdp.c @ 334:4c91470e1a53

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Only latch video mode at the very beginning of the frame to avoid problems with the cycle count getting out of sync with what I expect
author Mike Pavone <pavone@retrodev.com>
date Tue, 14 May 2013 00:46:34 -0700
parents f16136a3835d
children f8c6f8684cd6
comparison
equal deleted inserted replaced
333:f16136a3835d 334:4c91470e1a53
1109 { 1109 {
1110 while(context->cycles < target_cycles) 1110 while(context->cycles < target_cycles)
1111 { 1111 {
1112 uint32_t line = context->cycles / MCLKS_LINE; 1112 uint32_t line = context->cycles / MCLKS_LINE;
1113 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE; 1113 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE;
1114 if (!line) { 1114 if (!context->cycles) {
1115 latch_mode(context); 1115 latch_mode(context);
1116 } 1116 }
1117 uint32_t linecyc = context->cycles % MCLKS_LINE; 1117 uint32_t linecyc = context->cycles % MCLKS_LINE;
1118 if (linecyc == 0) { 1118 if (linecyc == 0) {
1119 if (line <= 1 || line >= active_lines) { 1119 if (line <= 1 || line >= active_lines) {