You may also want to test a newly-installed option. Some options come with their own diagnostics programs; however, you can test the following with the System diagnostics program on your Reference diskette:

Ll System memory

Lt Math coprocessor

Ci Serial and parallel ports

tl Disk drives

QMonitors and display adapters Cl Dot matrix printers.

See Appendix C for instructions.

Accessing Internal Components 5-13