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Hackishly enforce determinism to trace testing

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This commit is contained in:
Aaron Culliney 2016-07-03 13:52:16 -07:00
parent ddd03ca4d0
commit b62f5e9e7f
1 changed files with 8 additions and 0 deletions
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8
src/display.c
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@ -1531,11 +1531,19 @@ uint16_t video_scanner_get_address(bool *vblBarOut) {
} }
uint8_t floating_bus(void) { uint8_t floating_bus(void) {
#if TESTING
// HACK FIXME TODO : where is the non-determinism sneaking in here?
return 0;
#endif
uint16_t scanner_addr = video_scanner_get_address(NULL); uint16_t scanner_addr = video_scanner_get_address(NULL);
return apple_ii_64k[0][scanner_addr]; return apple_ii_64k[0][scanner_addr];
} }
uint8_t floating_bus_hibit(const bool hibit) { uint8_t floating_bus_hibit(const bool hibit) {
#if TESTING
// HACK FIXME TODO : where is the non-determinism sneaking in here?
return 0;
#endif
uint16_t scanner_addr = video_scanner_get_address(NULL); uint16_t scanner_addr = video_scanner_get_address(NULL);
uint8_t b = apple_ii_64k[0][scanner_addr]; uint8_t b = apple_ii_64k[0][scanner_addr];
return (b & ~0x80) | (hibit ? 0x80 : 0); return (b & ~0x80) | (hibit ? 0x80 : 0);