IBM Series 1 User Manual page 42

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Service gate
Condition code in (interrupt CC)
Data bus (interrupt ID)
Service gate return
Data strobe
Timings:
o <
T 1
<
T2
<
3
J.LS
o
~
T3
~
T4
~
3
J.LS
100 ns
<
CT1
200 ns
<
CT2
100 ns
<:
CT3
<
CT2 + 100 ns
("J
I
1
I ,.
Channel time-out ..
I
CT3
. .
CT2
Legend:
cr
=
channel times
T
=
attachment controlled times
LVS
=
last valid signal, occurring in time, of a group of
signals being activated on the channel. The group
is linked
by
short dotted lines on the timing diagram.
LIS
=
last invalid signal, occurring in time, of a group of
signals being deactivated on the channel. The group
is linked
by
short dotted lines on the timing diagram.
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