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SCP: Updated to current.

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This commit is contained in:
Richard Cornwell
2021-11-01 18:21:44 -04:00
parent 09c1a2c405
commit 8b3988291e
6 changed files with 131 additions and 28 deletions
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33
sim_timer.c
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@@ -1994,16 +1994,33 @@ switch (sim_throt_state) {
d_cps = (double) sim_throt_val * 1000.0;
else
d_cps = (sim_throt_peak_cps * sim_throt_val) / 100.0;
if (d_cps > a_cps) {
if (d_cps >= a_cps) {
/* the initial throttling calibration measures a slower cps rate than the desired cps rate, */
sim_debug (DBG_THR, &sim_timer_dev, "sim_throt_svc() CPU too slow. Values a_cps = %f, d_cps = %f\n",
a_cps, d_cps);
sim_throt_state = SIM_THROT_STATE_INIT;
sim_printf ("*********** WARNING ***********\n");
sim_printf ("Host CPU is too slow to simulate %s %s per second\n", sim_fmt_numeric(d_cps), sim_vm_interval_units);
sim_printf ("Host CPU can only simulate %s %s per second\n", sim_fmt_numeric(sim_throt_peak_cps), sim_vm_interval_units);
sim_printf ("Throttling disabled.\n");
sim_set_throt (0, NULL);
return SCPE_OK;
/* if the measured rate is well below the measured peak rate? */
if (sim_throt_peak_cps >= (2.0 * d_cps)) {
/* distrust the measured rate and instead use half the peak rate as measured
cps rate. */
sim_printf ("*********** WARNING ***********\n");
sim_printf ("Host CPU could be too slow to simulate %s %s per second\n", sim_fmt_numeric(d_cps), sim_vm_interval_units);
sim_printf ("Host CPU did only simulate %s %s per second\n", sim_fmt_numeric(a_cps), sim_vm_interval_units);
sim_printf ("But peak rate was: %s %s per second\n", sim_fmt_numeric(sim_throt_peak_cps), sim_vm_interval_units);
a_cps = (sim_throt_peak_cps / 2.0) + 1.0;
sim_printf ("Assuming rate: %s %s per second\n", sim_fmt_numeric(a_cps), sim_vm_interval_units);
}
else {
sim_throt_state = SIM_THROT_STATE_INIT;
sim_printf ("*********** WARNING ***********\n");
sim_printf ("Host CPU is too slow to simulate %s %s per second\n", sim_fmt_numeric(d_cps), sim_vm_interval_units);
sim_printf ("Host CPU did only simulate %s %s per second\n", sim_fmt_numeric(a_cps), sim_vm_interval_units);
sim_printf ("Peak rate: %s %s per second\n", sim_fmt_numeric(sim_throt_peak_cps), sim_vm_interval_units);
sim_printf ("Throttling disabled.\n");
sim_set_throt (0, NULL);
return SCPE_OK;
}
}
while (1) {
sim_throt_wait = (int32) /* cycles between sleeps */