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Raptor AT – Installation Guide
60
Checkpoint
Code
Description
1Ah
The memory refresh line is toggling. Checking the 15
second on/off time next.
23h
Reading the 8042 input port and disabling the
MEGAKEY Green PC feature next. Making the BIOS
code segment writable and performing any necessary
configuration before initializing the interrupt vectors.
24h
The configuration required before interrupt vector
initialization has completed. Interrupt vector
initialization is about to begin.
25h
Interrupt vector initialization is done. Clearing the
password if the POST DIAG switch is on.
27h
Any initialization before setting video mode will be
done next.
28h
Initialization before setting the video mode is complete.
Configuring the monochrome mode and color mode
settings next.
2Ah
Bus initialization system, static, output devices will be
done next, if present. See Table D-7 for additional
information.
2Bh
Passing control to the video ROM to perform any
required configuration before the video ROM test.
2Ch
All necessary processing before passing control to the
video ROM is done. Looking for the video ROM next
and passing control to it.
2Dh
The video ROM has returned control to BIOS POST.
Performing any required processing after the video
ROM had control.
2Eh
Completed post-video ROM test processing. If the
EGA/VGA controller is not found, performing the
display memory read/write test next.
2Fh
The EGA/VGA controller was not found. The display
memory read/write test is about to begin.
30h
The display memory read/write test passed. Look for
retrace checking next.
31h
The display memory read/write test or retrace checking
failed. Performing the alternate display memory
read/write test next.
32h
The alternate display memory read/write test passed.
Looking for alternate display retrace checking next.
34h
Video display checking is over. Setting the display
mode next.