User's Manual

LARGE BURROUGHS SYSTEM TAPES
9-2 XEROX LASER PRINTING SYSTEMS TAPE FORMATS MANUAL
Figure 9-1. Printer backup tape record format (Burroughs)
Line-up records
The first record of the first block in a Burroughs 6700 printer backup
tape may be a line-up record containing a forms message.
• If this record is longer than 12 6-byte words and if a flag bit is
set (bit 47 in the third 6-byte word following the IOCW), then the
record does contain a forms message.
• The length byte of the line-up record includes the length of the
forms message identifier and the length of the forms message
text.
• The text of the message begins with the character immediately
following the hexadecimal 15 (X‘15’).
• The channel control word in the line-up record is the code for a
printer “no operation” (NOP).
The line-up record is recognized automatically as a stacked report
delimiter by the Xerox/OSS. Furthermore, the line-up record is
displayed to the operator when the printer is printing in single-report
mode.