TMSCP(4) BSD/vax Kernel Interfaces Manual TMSCP(4)NAME
tmscp — DEC TMSCP magtape interface
SYNOPSIS
controller tmscp0 at uba? csr 0174500 vector tmscpintr
tape tms0 at tmscp0 drive 0
DESCRIPTION
Tape controllers compatible with the DEC Tape Mass Storage Control Proto‐
col (TMSCP) architecture such as the TU81 and the TK50 provide a standard
tape drive interface as described in mtio(4). The controller communi‐
cates with the host through a packet oriented protocol. Consult the file
⟨vax/tmscp.h⟩ for a detailed description of this protocol.
DIAGNOSTICS
tmscp controller failed to init. The controller initialization procedure
failed. This probably indicates a hardware problem.
tmscp%d: sa 0%o, state %d. (Additional status information given after a
hard I/O error.) The values of the controller status register and the
internal driver state are printed.
tmscp%d: random interrupt ignored. An unexpected interrupt was received
(e.g. when no I/O was pending). The interrupt is ignored.
tmscp%d: interrupt in unknown state %d ignored. An interrupt was
received when the driver was in an unknown internal state. Indicates a
hardware problem or a driver bug.
tmscp%d: fatal error (0%o). The controller detected a ``fatal error'' in
the status returned to the host. The contents of the status register are
displayed.
OFFLINE. (Additional status information given after a hard I/O error.)
A hard I/O error occurred because the drive was not on-line.
tmscp%d: hard error
tmscp%d: soft error. These errors precede an interpretation of a TMSCP
error message returned by the controller to the host. TMSCP errors may
be:
controller error, event 0%o.
host memory access error, event 0%o, addr 0%o.
tape transfer error, unit %d, grp 0x%x, event 0%o.
STI error, unit %d, event 0%o.
STI Drive Error Log, unit %d, event 0%o.
STI Formatter Error Log, unit %d, event 0%o.
unknown error, unit %d, format 0%o, event 0%o.
SEE ALSOmt(1), tar(1), tp(1), mtio(4), tm(4), ts(4), ut(4), dmesg(8)HISTORY
The tmscp driver appeared in 4.3BSD.
4.3 Berkeley Distribution June 5, 1993 4.3 Berkeley Distribution
