IBM RT PC Options Installation page 183

TNL SN20-9864 (May 1987) to 75X0217
Switch Bank 1
(Normal Configuration)
Must Be Open
For IBM 6150/6151
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Must Be Closed
For IBM 6150/6151
Switch Bank 1
The illustration above shows the normal Switch Bank 1 configuration.
Use the following table to set Switch Bank 1 if your configuration
requirements differ.
Note:
If you are using the IBM Monochrome Display and Printer
Adapter in conjunction with the Megapel adapter, the printer port on the
Megapel adapter must be disabled or a conflict will exist on Interrupt
Level 7. Refer to "Adapter Conflicts" on page 1-19 and to the Interrupt
and Usage Table on page 1-21.
Switch Function Open Closed
1 Reserved; must be Open
2
Printer Port Disable Enable
3 Color Graphics Emulation Disable Enable
4
Reserved; must be Closed
Installing: The Megapel Adapter requires two adjacent, long adapter
slots. Only slots 4 and 5 in the IBM 6150 and slots 2 and 3 in the IBM
6151 may be used.
See the system unit diagram to locate the adapter slots.
7 -18 Options Installation