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Qbus & Unibus VAX: Add a SHOW QBA|UBA MAP{=n} command to display the bus map

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This commit is contained in:
Mark Pizzolato
2020-08-29 08:16:58 -07:00
parent 6f207b22a5
commit 5c48229ce4
9 changed files with 126 additions and 27 deletions
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57
PDP11/pdp11_io_lib.c
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@@ -572,6 +572,63 @@ for (i = 0, dibp = NULL; i < (IOPAGESIZE >> 1); i++) { /* loop thru entries */
return SCPE_OK;
}
static t_bool _map_description (char *buf, size_t buf_size, uint32 val, uint32 index, uint32 valid_mask)
{
t_bool ind_eq = (index == (val & ~valid_mask));
const char *desc = ind_eq ? "Value == Index" : "";
const char *valid = (val & valid_mask) ? "Valid" : "";
*buf = '\0';
if (*desc || *valid)
snprintf (buf, buf_size, " (%s%s%s)", valid, (*valid && *desc) ? ", " : "", desc);
return ind_eq;
}
/* Display bus map registers */
t_stat show_bus_map (FILE *st, const char *cptr, uint32 *busmap, uint32 nmapregs, const char *busname, uint32 mapvalid)
{
t_stat r;
uint32 mr;
uint32 mstart = 0;
uint32 mend = nmapregs - 1;
uint32 same_val;
uint32 same_start;
t_bool ind_eq;
char same_desc[32];
char desc[32];
if (cptr) {
mstart = mend = (uint32) get_uint (cptr, 16, nmapregs - 1, &r);
if (r != SCPE_OK)
return sim_messagef (SCPE_ARG, "Invalid %s Map Register: %s\n", busname, cptr);
}
_map_description (desc, sizeof (desc), busmap[mstart], mstart, mapvalid);
fprintf (st, "%s-MAP[%04X] = %08X%s\n", busname, mstart, busmap[mstart], desc);
same_start = mstart;
same_val = busmap[mstart];
strcpy (same_desc, desc);
for (mr = mstart + 1; mr <= mend; mr++) {
ind_eq = _map_description (desc, sizeof (desc), busmap[mr], mr, mapvalid);
if (((same_val == busmap[mr]) && (0 == strcmp (desc, same_desc))) ||
(ind_eq && (0 == strcmp (desc, same_desc)))) {
same_val = busmap[mr];
strcpy (same_desc, desc);
continue;
}
if (same_start != mr - 1)
fprintf (st, "%s-MAP[%04X thru %04X] same as above\n", busname, same_start + 1, mr - 1);
fprintf (st, "%s-MAP[%04X] = %08X%s\n", busname, mr, busmap[mr], desc);
same_start = mr;
same_val = busmap[mr];
strcpy (same_desc, desc);
}
if ((same_start != mend) ||
(0 != strcmp (same_desc, desc)))
fprintf (st, "%s-MAP[%04X thru %04X] same as above\n", busname, same_start + 1, mend);
return SCPE_OK;
}
/* Autoconfiguration
The table reflects the MicroVAX 3900 microcode, with one field