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BUFFER I
BUFFER
UFFER
STATS
0
0
0
Bit
Indicator
ALD
Position
Description
g
KE341
BUFFER
KE341
1
KE351
KE351
H
KE341
BUFFER
KE341
2
KE351
KE351
0-11
The buffer registers indicate the channels using the CPU. They are used to gate control information
{!
KE341
and errors to the channel.
BUFFER
KE341
3
KE351
KE351
{!
KE151
KE161
1/0
KE171
12-16
1/0
stat. indicate the condition of the five
1/0
stats that set conditions for microprogram branching.
STATS
KE181
They are set by the selector channel on break-in.
KE191
t-----
17
Not used.
1/0
CHK MODE
KE311
18
1/0
check mode is on to indicate that the chonnel is using CPU and any errors detected in the CPU
r----
cotdd be caused by the channel.
u
KE661
LOGS
KE661
19-21
Log 1, 2, or 3 indicates the number of the selector channel that is being logged.
KE66 I
GATE STATUS
KE671
22
~ate
status is on after a logout allowing the channel that was logged to gate it. status ta CPU.
RESET
KE671
23
Log reset is on after the gate stat hasi>;3en turned off to provide a reset to the Cl1anneTttlat was
~ged.
24-35
Nat used.
FIGURE 139. COMMON CHANNEL ROLLER--POSITION 3
BUFRR I
BUFFER 2
Bit
Indicator
ALO
Position
Description
p
FAOl 1
0
FAOl 1
1
FAOl I
BUFFER
2
FA021
1
3
FA021
0-8
Content. of buffer I plus parity.
4
FA021
5
FA031
6
FA031
7
FA031
p
FAOl I
0
FAOl 1
1
FAOll
BUFFER
2
FA021
2
3
FA021
9-17
Contents of buffer 2 plus parity.
4
FA021
5
FA031
6
FA031
7
FA031
r--
REQ LOG OUT
FA341
23
R'!.9..uest log out indicates an error in the multiplexor chonnel is conditioning a log out request.
24-35
Not used.
FIGURE 140. MULTIPLEX CHANNEL ROLLER--POSITION
4
Appendix
B--System Control Panel
(3/71)
163
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