Acer 486 Specifications download pdf (Page 36)

28 PCA-6143P User's Manual

POST (Power On Self Tests)

Whenever you start up your system, the CPU card runs a series of

programs stored in an on-board ROM chip. These programs are

divided into two stages:

System test and initialization

These routines test and initialize board hardware. If the routines

encounter an error during the tests, you will either hear a few short

beeps or see an error message on the screen. There are two kinds

of errors: fatal and non-fatal. The system can usually continue the

boot up sequence with non-fatal errors. Non-fatal error messages

usually appear on the screen along with the following instructions:

press <F1> to RESUME

Write down the message and press the F1 key to continue the

bootup sequence. Non-fatal error messages appear in Appendix F.

If the routines encounter a fatal error, they will stop the tests and

output a message indicating which test failed. If the fatal error

comes before the screen device initializes, the card will indicate

the error code through a series of beeps. Error beep codes also

appear in Appendix F.

System configuration verification

These routines check the current system configuration against the

values stored in the card’s CMOS memory. If they don’t match, the

program outputs an error message. You will then need to run the

BIOS setup program to set the configuration information in

memory.

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Acer 486 Specifications Page 36