Control Data 3170 Installation Handbook page 82

Decks and COSY numbers:
DELETE! 44
MTWRV50
DECK!
p1,p2
2.3.41 MAGNETIC TAPE NOISE RECOVERY OPTION (MTN.RTRY)
Definition: The MTN. RTRY option specifies the number of backspace! reread cycles
required before discarding a noise record.
Option:
MTN. RTRY EQU n
Number of cycles, 1 through 63
Dependency: None
Release value: MTN. RTRY equals 5 on the MSOS COSY tape and the MSOS binary
source tape.
Decks and COSY numbers:
MTNRV50
DELETE!
DECK!
33
p1,p2
2.3.42 MAGNETIC TAPE CLEANER MOTION OPTION (MTS.RTRY)
Definition: The MTS. RTRY option specifies the number of times that the recovery
routines pass a magnetic tape back through the tape cleaner portion of the head ass embly
in attempting error recovery.
Option:
MTS. RTRY EQU n Number of passes, 1 through 63
Dependency: The product of the values for the MTS. RTRY option and the MTB. RTRY
option must not exceed 511.
Release value: MTS. RTRY equals 4 on the MSOS COSY tape and the MSOS binary
source tape.
Decks and COSY numbers:
DELETE! 55
MTRRV50 DECK! p1,p2
2.3.43 NEGATIVE ZERO OPTION (MZEROSUP)
Definition: The option MZEROSUP allows the user to print negative zero as zero in
BCD output.
Option:
MZEROSUP EQU
MZEROSUP EQU
60410800 A
o
:f0
Allows - 0 to be printed as - 0
Prints - 0 as 0
II-2-37