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PDQ-3: Fix Coverity identified problem with loading ROM file image (Holger Veit)

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This commit is contained in:
Mark Pizzolato 2017-09-12 11:09:09 -07:00
parent 415b2ef1bc
commit 5ef84f7da2
1 changed files with 5 additions and 4 deletions
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9
PDQ-3/pdq3_sys.c
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@ -108,15 +108,16 @@ t_stat sim_load (FILE *fi, CONST char *cptr, CONST char *fnam, int flag)
* as the first word, so it will load at word address 0xf400, and 0xfc68
* will be preset to 0xf401
*/
c1 = fgetc(fi);
c2 = fgetc(fi);
if ((c1 = fgetc(fi))==EOF) return SCPE_EOF;
if ((c2 = fgetc(fi))==EOF) return SCPE_EOF;
rombase = c1 + c2 * 256;
if (rombase > (MAXMEMSIZE-512)) return SCPE_ARG;
rom_write(rombase & 0xfffe, rombase);
reg_fc68 = rombase;
i = 0;
while (!feof(fi) && i<0x1ff) {
c1 = fgetc(fi);
c2 = fgetc(fi);
if ((c1 = fgetc(fi))==EOF) return SCPE_EOF;
if ((c2 = fgetc(fi))==EOF) return SCPE_EOF;
rom_write(rombase+i, (uint16)(c1 + c2*256));
i++;
}