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TT2500: Minor history enhancements

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- Issue reasonable error message explaining invalid SET CPU HISTORY=n input
- Let SIGINT (^C) abort SHOW HISTORY output
This commit is contained in:
Mark Pizzolato 2025-10-12 18:57:08 -10:00
parent d5ccdd843f
commit 271965ca99
1 changed files with 6 additions and 2 deletions
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8
tt2500/tt2500_cpu.c
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@ -553,11 +553,11 @@ cpu_set_hist (UNIT *uptr, int32 val, CONST char *cptr, void *desc)
uint32 x;
if (cptr == NULL)
return SCPE_ARG;
return sim_messagef (SCPE_ARG, "Missing history value\n");
x = get_uint (cptr, 10, 1000000, &r);
if (r != SCPE_OK)
return r;
return sim_messagef (SCPE_ARG, "Invalid Numeric Value: %s. Maximum is %d\n", cptr, 1000000);
history = (HISTORY *)calloc (x, sizeof (*history));
if (history == NULL)
@ -583,6 +583,10 @@ cpu_show_hist (FILE *st, UNIT *uptr, int32 val, CONST void *desc)
j = history_m + history_i - history_n;
for (i = 0; i < history_n; i++) {
if (stop_cpu) { /* Control-C (SIGINT) */
stop_cpu = FALSE;
break; /* abandon remaining output */
}
fprintf (st, "%06o %06o ",
history[j].PC,
history[j].IR);