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B-5
Appendix B: AMIBIOS POST Diagnostic Error Messages
APPENDIX B
Checkpoint Code Description
4Bh The amount of memory above 1 MB has been found and verified. Checking
for a soft reset and clearing the memory below 1 MB for the
soft reset next. If this is a power on situation, going to checkpoint 4Eh next.
4Ch The memory below 1 MB has been cleared via a soft reset. Clearing
the memory above 1 MB next.
4Dh The memory above 1 MB has been cleared via a soft reset. Saving the
memory size next. Going to checkpoint 52h next.
4Eh The memory test started, but not as the result of a soft reset.
Displaying the first 64 KB memory size next.
4Fh The memory size display has started. The display is updated during
the memory test. Performing the sequential and random memory test
next.
50h The memory below 1 MB has been tested and initialized. Adjusting
the displayed memory size for relocation and shadowing next.
51h The memory size display was adjusted for relocation and shadowing.
Testing the memory above 1 MB next.
52h The memory above 1 MB has been tested and initialized. Saving
the memory size information next.
53h The memory size information and the CPU registers are saved.
Entering real mode next.
54h Shutdown was successful. The CPU is in real mode. Disabling the
Gate A20 line, parity, and the NMI next.
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.