NAME

tm − tapemaster 1/2 inch tape drive

SYNOPSIS

controller tm0 at mb0 csr 0xa0 priority 3
tape mt0 at tm0 drive 0 flags 1

DESCRIPTION

The Tapemaster tape controller controls Pertec-interface 1/2" tape drives such as the CDC Keystone, providing a standard tape interface to the device, see mtio(4).

SEE ALSO

mt(1), tar(1), ar(4S)
CPC Tapemaster Product Specification (Sun 800-0620-01)
CPC Tapemaster Application Note (Sun 800-0622-01)
CDC Streaming Tape Unit 9218X Reference Manual (Sun 800-0623-01)

DIAGNOSTICS

tm%d: no response from ctlr. 

tm%d: error %d during config. 

mt%d: not online. 

mt%d: no write ring. 

tmgo: gate wasn’t open.  Controller lost synch. 

tmintr: can’t clear interrupts. 

tm%d: stray interrupts. 

mt%d: hard error bn=%d er=%x. 

mt%d: lost interrupt. 

BUGS

The Tapemaster controller does not provide for byte-swapping and the resultant system overhead prevents streaming transports from streaming. 

If a non-data error is encountered on non-raw tape, it refuses to do anything more until closed. 

The system should remember which controlling terminal has the tape drive open and write error messages to that terminal rather than on the console. 

Sun System Release 1.0  —  11 August 1983