Xerox 900 series - Page 88

.,8-0
A A register
B 8 register
MAGNETIC TAPE SEARCH SUBROUTINE
$QSRCH
SEARCH
Store search key Address in 10
and set search flag
S QSYSTP*
U
B IRead first 4 words of record
R
Was first word read a '6 I'?
Yes
Are
chan. 9-16 = "SYSENO"t\'?
No
Are chan. 9-16 = «10)), «(10)+ 1)?
A, B-- search key
Reset search
flag
No
*Uses the magnetic tape read subroutine used by the MONARCH Loader.
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