Setting The Interrupt Level - IBM Token-Ring Network PC Adapter Hardware Maintenance And Service

Setting the Interrupt Level
Switches 7 and 8 on switch block 1 allow you to set the
interrupt level. The interrupt level allows an adapter to
request the attention of the computer's central processing
unit. The adapter allows you the flexibility of setting the
interrupt level according to the features you have
installed. As with the ROM settings, if the interrupt level
that you select for the adapter conflicts with another
feature in your system unit, your computer or one of the
features will not operate correctly.
Switches 7 and 8 on switch block 1 are illustrated for you
to determine which interrupt level you can use.
Set the interrupt level to 2, 3, or 7 as described below. Be
sure you pick an interrupt level that does not conflict
with the features in your computer.
If the interrupt level that you select does not work, see
your place of purchase for further recommendations.
Level 2. Use if you do not have a
3278-79 Emulator or an IBM PC
Network Adapter.
Level 3. Use if you cannot use
level 2 and you do not have any of
the following IBM Personal
Computer adapters:
• IBM PC Network (secondary)
Switch Block 1
1 2 3 4 5 6 7 8
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1 2 3 4 5 6 7 8
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• Asynchronous Communications (secondary)
• SDLC Communications
• BSC (secondary).
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