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TMXR: Avoid potential divide by 0 when setting speed without a speed factor

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This commit is contained in:
Mark Pizzolato 2018-09-08 13:58:20 -07:00
parent 77ff9e44f0
commit 488b91a62c
1 changed files with 5 additions and 3 deletions
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8
sim_tmxr.c
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@ -2538,7 +2538,8 @@ if (*cptr == '*') {
if (r != SCPE_OK) if (r != SCPE_OK)
return r; return r;
lp->bpsfactor = bpsfactor; lp->bpsfactor = bpsfactor;
if (speed == cptr) { /* just changing bps factor? */ if (!(lp->serport) && /* Not a serial port */
(speed == cptr)) { /* AND just changing bps factor? */
char speedbps[16]; char speedbps[16];
sprintf (speedbps, "%d", lp->rxbps); sprintf (speedbps, "%d", lp->rxbps);
@ -2548,8 +2549,9 @@ if (*cptr == '*') {
} }
} }
lp->rxbps = rxbps; /* use supplied speed */ lp->rxbps = rxbps; /* use supplied speed */
if ((lp->serport) && (lp->bpsfactor != 0.0)) if ((lp->bpsfactor == 0.0) || /* factor unspecified */
lp->bpsfactor = 1.0; /* Ignore bps factor for serial ports */ (lp->serport)) /* OR serial port */
lp->bpsfactor = 1.0; /* No bps factor */
lp->rxdeltausecs = (uint32)(_tmln_speed_delta (speed) / lp->bpsfactor); lp->rxdeltausecs = (uint32)(_tmln_speed_delta (speed) / lp->bpsfactor);
lp->rxnexttime = 0.0; lp->rxnexttime = 0.0;
uptr = lp->uptr; uptr = lp->uptr;