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SDS: Allow console bootstrap from RAD if connected to W channel

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Normally the RAD is connected to the E channel and there is no bootstrap capability (because of hardwired WIM instruction). However, for completeness, add code to allow booting from the RAD if it is connected to the W channel. Add RAD_CHAN definition to define which controller the RAD is connected to.

Improve parentheses in bootstrap code that allows an optional word count (while also permitting the canonical bootstrap sequence).
This commit is contained in:
Mark Emmer 2014-03-17 16:36:28 -06:00
parent c256894b62
commit 0b69e4e4d9
2 changed files with 30 additions and 2 deletions
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30
SDS/sds_rad.c
View file

@ -36,6 +36,7 @@
/* Constants */
#define RAD_CHAN CHAN_E /* Connected I/O controller */
#define RAD_NUMWD 64 /* words/sector */
#define RAD_NUMSC 64 /* sectors/track */
#define RAD_NUMTR 64 /* tracks/log unit */
@ -69,6 +70,9 @@ DSPT rad_tplt[] = { /* template */
DEVICE rad_dev;
t_stat rad_svc (UNIT *uptr);
t_stat rad_reset (DEVICE *dptr);
#if RAD_CHAN == CHAN_W
t_stat rad_boot (int32 unitno, DEVICE *dptr);
#endif
t_stat rad_fill (int32 sba);
void rad_end_op (int32 fl);
int32 rad_adjda (int32 sba, int32 inc);
@ -76,12 +80,13 @@ t_stat rad (uint32 fnc, uint32 inst, uint32 *dat);
/* RAD data structures
rad_dib device information block
rad_dev device descriptor
rad_unit unit descriptor
rad_reg register list
*/
DIB rad_dib = { CHAN_E, DEV_RAD, XFR_RAD, rad_tplt, &rad };
DIB rad_dib = { RAD_CHAN, DEV_RAD, XFR_RAD, rad_tplt, &rad };
UNIT rad_unit = {
UDATA (&rad_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_BUFABLE+UNIT_MUSTBUF,
@ -111,7 +116,11 @@ DEVICE rad_dev = {
"RAD", &rad_unit, rad_reg, rad_mod,
1, 8, 21, 1, 8, 24,
NULL, NULL, &rad_reset,
#if RAD_CHAN == CHAN_W
&rad_boot, NULL, NULL,
#else
NULL, NULL, NULL,
#endif
&rad_dib, DEV_DISABLE
};
@ -319,3 +328,22 @@ xfr_req = xfr_req & ~XFR_RAD; /* clr xfr req */
sim_cancel (&rad_unit); /* deactivate */
return SCPE_OK;
}
#if RAD_CHAN == CHAN_W
/* Boot routine - simulate FILL console command */
t_stat rad_boot (int32 unitno, DEVICE *dptr)
{
extern uint32 P, M[];
if (unitno) /* only unit 0 */
return SCPE_ARG;
M[0] = 077777771; /* -7B */
M[1] = 007100000; /* LDX 0 */
M[2] = 000203226; /* EOM 3226B */
M[3] = 003200002; /* WIM 2 */
M[4] = 000100002; /* BRU 2 */
P = 1; /* start at 1 */
return SCPE_OK;
}
#endif

2
SDS/sds_sys.c
View file

@ -234,7 +234,7 @@ for (i = 0; i < 8; i++) { /* read boot */
if ((buf[0] != 023200012) || /* 2 = WIM 12,2 */
(buf[1] != 004100002) || /* 3 = BRX 2 */
(buf[2] != 007100011) || /* 4 = LDX 11 */
(buf[3] & ~VA_MASK != 023200000) || /* 5 = WIM xxxxx,2 */
((buf[3] & ~VA_MASK) != 023200000) || /* 5 = WIM xxxxx,2 */
(buf[4] != 004021000) || /* 6 = SKS 21000 */
(buf[5] != 004100005)) /* 7 = BRX 5 */
return SCPE_FMT;