[PrivCPU] changed timer compare to lower equals to trigger exactly on time

3 years ago · cc598c0910
parent affaa60d22
commit cc598c0910
1 changed files with 1 additions and 1 deletions
--- a/riscemu/priv/PrivCPU.py
+++ b/riscemu/priv/PrivCPU.py
@ -175,7 +175,7 @@ class PrivCPU(CPU):
    def _timer_step(self):
        if not self._time_interrupt_enabled:
            return
-        if self._time_timecmp < (time.perf_counter_ns() // self.TIME_RESOLUTION_NS) - self._time_start:
+        if self._time_timecmp <= (time.perf_counter_ns() // self.TIME_RESOLUTION_NS) - self._time_start:
            self.pending_traps.append(TimerInterrupt())
            self._time_interrupt_enabled = False
            print(FMT_CPU + "[CPU] raising timer interrupt: tartegt: {}, current: {}".format(self._time_timecmp, (time.perf_counter_ns() // self.TIME_RESOLUTION_NS) - self._time_start) + FMT_NONE)