A-7
:
1Ah The memory refresh line is toggling. Checking the 15 second on/off time
next.
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
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 the last page for additional information.
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.
37h The display mode is set. Displaying the power on message next.
38h Initializing the bus input, IPL, general devices next, if present. See the last
page of this chapter for additional information.
39h Displaying bus initialization error messages. See the last page of this
chapter for additional information.
3Ah The new cursor position has been read and saved. Displaying the Hit
<DEL> message next.
3Bh The Hit <DEL> message is displayed. The protected mode memory test
is about to start.
TableA-4. Uncompressed Initialization Error Codes
Post Code Description