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TAPE: Add support for reading partial fixed sized records.

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Partial reading is needed to properly read common archive images found
on bitsavers and elsewhere which were made from QIC devices which must
read multiples of 512 bytes at a time.
This commit is contained in:
Mark Pizzolato
2022-11-07 10:46:15 -10:00
parent c73a497fd2
commit 2c7f44d9f7
5 changed files with 95 additions and 4 deletions
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2
sim_disk.c
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@@ -7746,6 +7746,8 @@ if ((uptr->drvtyp != NULL) &&
(uptr->drvtyp->devtype != drives[val].devtype)) {
sim_tape_set_fmt (uptr, 0, "SIMH", NULL);
sim_disk_set_fmt (uptr, 0, "AUTO", NULL);
sim_tape_set_chunk_mode (uptr, ((drives[val].devtype == SCSI_TAPE) &&
(drives[val].flags & DRVFL_QICTAPE)) ? drives[val].sectsize : 0);
}
uptr->drvtyp = &drives[val];
set_writelock (uptr, ((uptr->drvtyp->flags & DRVFL_RO) != 0), NULL, NULL);