ZiLOG System 8000 Hardware Reference Manual

HRM 21
C.1. General
Zilog
APPENDIX C
CARTRIDGE TAPE ERROR CONDITIONS
HRM 21
Table C-1 lists the error conditions that can result from
the commands that the tape controller receives from the host
CPU. The table lists the commands, the resulting condi-
tions, and the status bits that the conditions set.
Table C-1 Cartridge Tape Error Conditions
COMMAND RECEIVED
Initialization
DIAG
DIAG
DIAG
Any command
Any undefined
command
Any command except
DIAG
Any command except
DIAG, MRTRY, SEL,
MODE
Any command except
DIAG, MRTRY, SEL,
LOAD, MODE
WRITE, WFM EGP
C-·1
CONDITION
Tape (if present)
rewinds for more
than 88 sec
ROM checksum error
Fifo test error
Handshake test
failed
Host wrote to
ports in byte or
double word mode
Drive busy, or
drive not selected
No tape
Tape not logically
loaded
Tape write-protected
Zilog
STATUS BITS SET
INTV and HWERR
INTV and HWERR
INTV and HWERR
INTV and HWERR
CMDREJ
CMDREJ and INVAL
CMDREJ, INTV,
INAP,
and HWERR
CMDREJ, INTV, and
NOTAP
CMDREJ and INAP
CMDREJ, INAP, and
PROT
C-1

ZiLOG System 8000 Specifications

General

Brand	ZiLOG
Model	System 8000
Category	Desktop
Language	English