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TIMER: Add mechanism to pre-calibrate the instruction execution rate

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This commit is contained in:
Mark Pizzolato
2019-05-28 23:56:58 -07:00
parent 48db10994d
commit f75f28aa21
9 changed files with 114 additions and 3 deletions
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17
PDP10/pdp10_cpu.c
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@@ -2347,6 +2347,19 @@ pi_eval (); /* eval pi system */
return;
}
/*
* This sequence of instructions is a mix that hopefully
* represents a resonable instruction set that is a close
* estimate to the normal calibrated result.
*/
static const char *pdp10_clock_precalibrate_commands[] = {
"-m 100 ADDM 0,110",
"-m 101 ADDI 0,1",
"-m 102 JRST 100",
"PC 100",
NULL};
/* Reset routine */
t_stat cpu_reset (DEVICE *dptr)
@@ -2368,10 +2381,12 @@ if (M == NULL)
return SCPE_MEM;
sim_vm_pc_value = &pdp10_pc_value;
sim_vm_is_subroutine_call = &cpu_is_pc_a_subroutine_call;
sim_clock_precalibrate_commands = pdp10_clock_precalibrate_commands;
pcq_r = find_reg ("PCQ", NULL, dptr);
if (pcq_r)
pcq_r->qptr = 0;
else return SCPE_IERR;
else
return SCPE_IERR;
sim_brk_types = sim_brk_dflt = SWMASK ('E');
return SCPE_OK;
}