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Appendix A: AMIBIOS POST Checkpoint Codes
128
57h The A20 address line, parity, and the NMI are
disabled. Adjusting the memory size depending on
relocation and shadowing next.
58h The memory size was adjusted for relocation and
shadowing. Clearing the Hit <DEL> message next.
59h The Hit <DEL> message is cleared. The <WAIT...>
message is displayed. Starting the DMA and
interrupt controller test next.
60h The DMA page register test passed. Performing the
DMA Controller 1 base register test next.
62h The DMA controller 1 base register test passed.
Performing the DMA controller 2 base register test
next.
65h The DMA controller 2 base register test passed.
Programming DMA controllers 1 and 2 next.
66h Completed programming DMA controllers 1 and 2.
Initializing the 8259 interrupt controller next.
67h Completed 8259 interrupt controller initialization.
7Fh Extended NMI source enabling is in progress.
80h The keyboard test has started. Clearing the output
buffer and checking for stuck keys. Issuing the
keyboard reset command next.
81h A keyboard reset error or stuck key was found.
Issuing the keyboard controller interface test
command next.
82h The keyboard controller interface test completed.
Writing the command byte and initializing the
circular buffer next.
83h The command byte was written and global data
initialization has completed. Checking for a locked
key next.
Checkpoint Code Description
aa300.book Page 128 Tuesday, December 17, 2002 5:27 PM