IBM 2025 Maintenance Manual page 74

Processing unit
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1010
Unassigned
1110
Unassigned
2560 Print Latches 17-24 (MFPR3)
2560 Print Latches 33-SS (MFPRS)
1011
0
Set print latch 17
1111
0
Set print latch 33
1
Set print latch 18
1
Set print latch 34
2
Set print latch 19
2
set print latch 35
3
Set print latch 20
3
Set print latch Sl
See Note 3
4
set print latch 21
4
Set print latch S2
5
set print latch 22
5
Set print latch S3
6
Set print latch 23
6
Set print latch S4
7
Set print latch 24
7
Set print latch SS
1100
Unassigned
Notes:
2560 Print Latches 25-32 (MFPR4)
1.
MFSS--Decode sets stacker SEL interlock
latch automatically as data is loaded
1101
0
Set print latch 25
into stacker select registers.
1
Set print latch 26
2.
MFPU--If punch time FL is on, data is
2
Set print latch 27
XFERED to data
BFR
reg.
If punch time
3
Set print latch 28
FL is off, data is ccrq;ared to data
BFR
4
Set print latch 29
reg.
5
Set print latch 30
3.
MFPRS--sets print latches 33 thru SS
6
Set print latch 31
and turns on PRT REQ IN1K.
7
Set print latch 32
1-64 (7/69)

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