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fix somem timing issues

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This commit is contained in:
Nicholas Orlowsky 2024-01-29 21:43:12 -06:00
parent 2881481445
commit 960098d6c2
1 changed files with 11 additions and 5 deletions
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16
main.c
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@ -641,10 +641,16 @@ int main(int argc, char *argv[]) {
long msec = (cur.tv_sec - last.tv_sec) * 1000000 + cur.tv_usec - last.tv_usec;
if (msec > 16666) {
last = cur;
if (state.sound_timer > 0)
if (state.sound_timer > 0) {
uint8_t old = state.sound_timer;
state.sound_timer -= 1 * (msec/16666);
if (state.delay_timer > 0)
state.delay_timer -= 1 * (msec/16666);
state.sound_timer = state.sound_timer > old ? 0 : state.sound_timer;
}
if (state.delay_timer > 0){
uint8_t old = state.delay_timer;
state.delay_timer -= 1 * (msec/16666);
state.delay_timer = state.delay_timer > old ? 0 : state.delay_timer;
}
}
}
@ -674,8 +680,8 @@ int main(int argc, char *argv[]) {
(uint16_t)state.memory[state.program_counter + 1];
void (*op_func)(struct emu_state *) = get_op_func(state.opcode);
printf("\n[%d] | PC: %#x / OPCODE: %#x \n", i, state.program_counter,
state.opcode);
printf("\n[%d] | PC: %#x / OPCODE: %#x / SOUND TIMER: %d/ DELAY TIMER: %d\n", i, state.program_counter,
state.opcode, state.sound_timer, state.delay_timer);
if (op_func == NULL) {
printf("Illegal Instruction.\n");