IBM 1 Series Manual page 58
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- User manual (258 pages)
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° +Cycle-steal status bus bit 0
etCiclessteal status busbit 1
Inverter
AND
IPL tag latch
Primary
Inverter
AND
Device
/
inverter
OR
Set
.
;
/
configuration ,
jumpers
/
/
Flip
pe
latch
\
=
\
\
OR.
\
Reset
Alternate
Inverter
AND
inverter
+ Initiate IPL
AND
inverter
Enable IPL
+ System reset
Data
@——Inverter
Clock
- Power on reset
D-trigger
- IPL complete
°
ad
OR
Reset
Key:
(1) = device interface with channel
~ Abort
G) = jumper connection
AND
IPL
inverter
IN. =negative active signal
4
= positive shift required
Figure 2-19. Processor-initiated IPL logic
-IPL
}—————-@
+Enable IPL
cycle-steal
request and
transfers
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