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)1A
FROMfTO
CONTROLLER
7901-64
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~
~
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~
...
"""-
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~
iJNi'fO
UNIT 1
UNIT SELECT
TINTf2
ASSEMBLY
A17
UNIT 3
SELECT A
SELECT B
SELECT 1
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SELECT 2
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SET CYLINDER
..
....
SET HEAD AND SECTOR
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CONTROL
:
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SELECT AND DRIVE READY
SELECT AND ACCESS READY
SELECT AND SECTOR COMPARE
SELECT AND SECTOR PULSE
CONTROL INBUS 0 THRU
fl
CONTROL OUTBUS 0 THRU 7 (8 LINES)
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-,F"
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I ....
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I ....
1(0
MULTIPLEX
ASSEMBLY
A12
I~
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DRIVE F
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INDICATOR
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DRIVE R
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ASSEMBLY
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Al
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LATCH 0
. .
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LOAD SW
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DATA PROTECT
SWITCH
S9
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DATA PROTECT
SELECT ENABLE
DRIVE READY
ATTENTION
FIRST STATUS
DRIVE SET CYLINDER
DRIVE FAULT
SELECT AND CONTROL AND OUTBUS 7
SEEK CHECK
RESEEK HOME
ACCESS READY
INTERLOCK LINE (SEE NOTE 1)
ENCODER LAMP INTERLOCK
(SEE NOTE 2)
SOFTWARE
PROTECT
SWITCH (SEE NOTI
S3
SOFTWARE PROTECT
"~
SEI
DR
SEC
SEC
DR
WRITE DATA
-----..
" " ' - f
BALANCED LINE PAIR
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