Mercurial > repos > blastem

comparison vdp.c @ 724:2174f92c5f9b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix bug in vdp_next_hint that was causing HINTs to fire repeatedly when they should not have fired at all based on an HINT interval that was larger than the number of active lines in the display
author Michael Pavone <pavone@retrodev.com>
date Fri, 22 May 2015 18:38:44 -0700
parents 8f5339961903
children 45b62d237b7b
comparison
equal deleted inserted replaced
723:7178d750efbd 724:2174f92c5f9b
2032 return context->pending_hint_start; 2032 return context->pending_hint_start;
2033 } 2033 }
2034 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START; 2034 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START;
2035 uint32_t hint_line; 2035 uint32_t hint_line;
2036 if (context->vcounter + context->hint_counter >= inactive_start) { 2036 if (context->vcounter + context->hint_counter >= inactive_start) {
2037 if (context->regs[REG_HINT] > inactive_start) {
2038 return 0xFFFFFFFF;
2039 }
2037 hint_line = context->regs[REG_HINT]; 2040 hint_line = context->regs[REG_HINT];
2038 } else { 2041 } else {
2039 hint_line = context->vcounter + context->hint_counter + 1; 2042 hint_line = context->vcounter + context->hint_counter + 1;
2040 } 2043 }
2041 2044