BIOS Setup Information
Code
Description
14
The 8254 timer test will begin next.
19
The 8254 timer test is over. Starting the memory refresh test next.
1A
The memory refresh line is toggling. Checking the 15us on/off time next.
23
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.
24
The configuration or setup required before interrupt vector initialization has
completed. Interrupt vector init. is about to begin
25
Interrupt vector initialization is done. Clearing the password if the POST
DIAG switch is on.
27
Any initialization before setting video mode to be done.
28
Going for monochrome mode and color mode setting.
2A
Bus initialization system, static, output devices will be done next, if present.
2B
Passing control to the video ROM to perform any required configuration
before the video ROM test.
2C
To look for optional video ROM and give control.
2D
The video ROM has returned control to BIOS POST. Performing any
required processing after the video ROM had control.
2E
Completed post-video ROM test processing. If the EGA/VGA controller is
not found, performing the display memory read/write test next.
2F
EGA/VGA not found. Display memory R/W test about to begin.
30
Display memory R/W test passed. Look for retrace checking next.
31
Display memory R/W test or retrace checking failed. To do alternate display
retrace checking.
32
Alternate display memory R/W test passed. To look for the alternate display
retrace checking.
34
Video display checking is over. Setting the display mode next.
37
The display mode is set. Displaying the power on message next.
38
Initializing the bus input, IPL, and general devices next, if present.
39
Displaying bus initialization error message.
3A
The new cursor position has been read and saved. Displaying the Hit <DEL>
message next.
40
Preparing the descriptor tables next.
42
Entering protected mode for the memory test next.
43
Entered protected mode. Enabling interrupts for diagnostics mode next.
44
Interrupts enabled if the diagnostics switch is on. Initializing data to check
memory wraparound at 0:0 next.
45
Data initialized. Checking for memory wraparound at 0:0 and finding the
total system memory size next.
46
The memory wraparound test has completed. The memory size calculation
has been done. Writing patterns to test memory next.
47
The memory pattern has been written to extended memory. Writing patterns
to the base 640 KB memory test.
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