User's Manual

XEROX LASER PRINTING SYSTEMS TAPE FORMATS MANUAL 9-1
9. 9Large Burroughs system tapes
The Xerox/OSS accepts Burroughs large system printer backup
tapes generated on the B6700 computer.
Burroughs labeled tapes
With the exception that labels may be multiples of six bytes in length,
Burroughs printer backup tapes are labeled following the
specifications for ANSI standard labels described previously in this
manual.
Record format
Records are variable in length and are blocked into fixed length
blocks of 300 6-byte words each. Each record begins with a 6-byte
Input/Output Control Word (IOCW). The IOCW contains the printer
carriage control, record length, and residual character count (variable
length of record postamble). There is no block length given since
each block is fixed at 300 6-byte words. Partially filled blocks are
padded with zeros. An IOCW of all zeros signifies the end of data
within a given block. (Refer to figure 9-1.)