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memory a t the expense of the tape unit without increasing i t s effective printing speed. Thus, the
most efficient operation follows f r o m assigning the highest-priority channel to the I/O device
with the highest a c c e s s speed.
G E - 2 3 5
MAIN
1
P R I O R I T Y CONTROL LOGIC
I
A recommended assignment of priorities is:
L
CENTRAL
PROCESSOR
o
0
MRADS Controller
1
Magnetic Tape Controller o r MRADS Controller
2
Magnetic Tape Controller
3
Magnetic Tape Controller
4
Document Handler Adapter
5
Datanet Controller, Document Handler Adapter o r High-Speed Printer Controller
6
High-Speed Printer Controller
r l r l
N
m
rl
a
2
.
"
2
E
g
a
a
a
e
U
CARD
PUNCH
CONTROLLER
a
rl
vr
CARD
READER
,CONTROLLER
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