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PDP11, VAXen: Properly clear I/O space read/write dispatches on deregister

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as reported in #1029
This commit is contained in:
Mark Pizzolato 2021-04-09 07:31:36 -07:00
parent fc5bda9070
commit b90b1eaf6f
1 changed files with 4 additions and 1 deletions
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5
PDP11/pdp11_io_lib.c
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@ -425,8 +425,11 @@ for (i = 0; i < (int32) dibp->lnt; i = i + 2) { /* create entries */
"Device %s address conflict with %s at 0%o\n",
sim_dname (dptr), cdname, (int)dibp->ba);
}
if ((dibp->rd == NULL) && (dibp->wr == NULL) && (dibp->vnum == 0))
if ((dibp->rd == NULL) && (dibp->wr == NULL) && (dibp->vnum == 0)) {
iodibp[idx] = NULL; /* deregister DIB */
iodispR[idx] = NULL; /* and related dispatches */
iodispW[idx] = NULL;
}
else {
if (dibp->rd)
iodispR[idx] = dibp->rd; /* set rd dispatch */