IBM 4381 Manual page 9

Figures
1. The 4381 Processor and console 12
2. Two 64-mm MCMs 16
3. A 64-mm MCM being hand held 17
4. The 4381 MCM board without any modules mounted 18
5. 64-mm MCMs mounted on the MCM board 18
MCM board mounted within the 4381 Processor
19 6.
7.
8.
9.
64-mm MCM with a portion of the heat sink cut away 20
An impingement cooling nozzle · 20
Logical components in a 4381 Processor Model Group 11, 12, 13, 1, or
2 27
10. General flow of data between the channels and processor storage 53
11. Logical components in a 4381 Processor Model Group 14 or 3 62
12. Data flow to and from processor storage via the high-speed buffers in a 4381
Model Group 14 or 3 71
13. The General Selection display 90
14. Dialup of a remote 4381 Processor via a 3275 display 91
15. Dialup of a remote 4381 Processor via a host processor emulating a 3275
display 92
16. 4381 Processor machine check code 103
17. 4381 Processor machine check interruptions 105
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A Guide to the IBM 4381 Processor