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PDP11: Fix regression where, depending on CPU model, the SR register disappears

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This change fixes #623.
This commit is contained in:
Mark Pizzolato 2018-10-01 13:43:43 -07:00
parent 3736f4c385
commit a9061b0332
1 changed files with 4 additions and 2 deletions
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6
PDP11/pdp11_io_lib.c
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@ -414,8 +414,10 @@ for (i = 0; i < (int32) dibp->lnt; i = i + 2) { /* create entries */
if ((dibp->rd == NULL) && (dibp->wr == NULL) && (dibp->vnum == 0))
iodibp[idx] = NULL; /* deregister DIB */
else {
iodispR[idx] = dibp->rd; /* set rd dispatch */
iodispW[idx] = dibp->wr; /* set wr dispatch */
if (dibp->rd)
iodispR[idx] = dibp->rd; /* set rd dispatch */
if (dibp->wr)
iodispW[idx] = dibp->wr; /* set wr dispatch */
iodibp[idx] = dibp; /* remember DIB */
}
}