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PDP1, PDP18B: Fixed dt_seterr to handle nx unit select (COVERITY)

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This commit is contained in:
Bob Supnik
2017-03-09 19:58:32 -08:00
committed by Mark Pizzolato
parent 43d8ee6323
commit 8029b1075f
2 changed files with 22 additions and 18 deletions
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20
PDP18B/pdp18b_dt.c
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@@ -1,6 +1,6 @@
/* pdp18b_dt.c: 18b DECtape simulator
Copyright (c) 1993-2016, Robert M Supnik
Copyright (c) 1993-2017, Robert M Supnik
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
@@ -27,6 +27,7 @@
(PDP-9) TC02/TU55 DECtape
(PDP-15) TC15/TU56 DECtape
09-Mar-17 RMS Fixed dt_seterr to handle nx unit select (COVERITY)
10-Mar-16 RMS Added 3-cycle databreak set/show entries
07-Mar-16 RMS Revised for dynamically allocated memory
13-Mar-15 RMS Added APIVEC register
@@ -1269,16 +1270,17 @@ return SCPE_OK;
void dt_seterr (UNIT *uptr, int32 e)
{
int32 mot = DTS_GETMOT (uptr->STATE);
dtsa = dtsa & ~DTA_STSTP; /* clear go */
dtsb = dtsb | DTB_ERF | e; /* set error flag */
if (mot >= DTS_ACCF) { /* ~stopped or stopping? */
sim_cancel (uptr); /* cancel activity */
if (dt_setpos (uptr)) /* update position */
return;
sim_activate (uptr, dt_dctime); /* sched decel */
DTS_SETSTA (DTS_DECF | (mot & DTS_DIR), 0); /* state = decel */
if (uptr != NULL) { /* valid select? */
int32 mot = DTS_GETMOT (uptr->STATE); /* get motion */
if (mot >= DTS_ACCF) { /* ~stopped or stopping? */
sim_cancel (uptr); /* cancel activity */
if (dt_setpos (uptr)) /* update position */
return;
sim_activate (uptr, dt_dctime); /* sched decel */
DTS_SETSTA (DTS_DECF | (mot & DTS_DIR), 0); /* state = decel */
}
}
DT_UPDINT;
return;