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@(#)tmscp.4 6.1 (Berkeley) 06/04/86

C 6 tmscp - DEC TMSCP magtape interface "controller tmscp0 at uba? csr 0174500 vector tmscpintr"

"tape tms0 at tmscp0 drive 0"

Tape controllers compatible with the DEC Tape Mass Storage Control Protocol (TMSCP) architecture such as the TU81 and the TK50 provide a standard tape drive interface as described in mtio (4). The controller communicates with the host through a packet oriented protocol. Consult the file < vax/tmscp.h > for a detailed description of this protocol. "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.

The following errors are interpretations of TMSCP error messages returned by the controller to the host. Each is preceded by either "tmscp%d: hard error" or "tmscp%d: soft error" .

"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" .

mt(1), tar(1), tp(1), mtio(4), tm(4), ts(4), ut(4), dmesg(8)