TYAN THUNDER 2 ATX Manual page 64

Chapter 5
Checkpoint Code
All necessary processing before passing control to the video ROM is done.
2Ch
Looking for the video ROM next and passing control to it.
The video ROM has returned control to BIOS POST. Performing any
2Dh
required processing after the video ROM had control.
Completed post-video ROM test processing. If the EGA/VGA controller
2Eh
is not found, performing the display memory read/write test next.
The EGA/VGA controller was not found. The display memory read/write
2Fh
test is about to begin.
The display memory read/write test passed. Look for retrace checking
30h
next.
The display memory read/write test or retrace checking failed. Performing
31h
the alternate display memory read/write test next.
The alternate display memory read/write test passed. Looking for alternate
32h
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.
Initializing the bus input, IPL, and general devices next, if present. See page
38h
71 for additional information.
Displaying bus initialization error messages. See page 71 for additional
39h
information.
The new cursor position has been read and saved. Displaying the Hit
3Ah
<DEL> message next.
40h Preparing the descriptor tables next.
The descriptor tables are prepared. Entering protected mode for the
42h
memory test next.
43h Entered protected mode. Enabling interrupts for diagnostics mode next.
Interrupts enabled if the diagnostics switch is on. Initializing data to check
44h
memory wraparound at 0:0 next.
Data initialized. Checking for memory wraparound at 0:0 and finding the
45h
total system memory size next.
The memory wraparound test has completed. The memory size calculation
46h
has been completed. Writing patterns to test memory next.
The memory pattern has been written to extended memory. Writing
47h
patterns to the base 640 KB memory next.
Patterns written in base memory. Determining the amount of memory below
48h
1 MB next.
The amount of memory below 1 MB has been found and verified.
49h
Determining the amount of memory above 1 MB memory next.
The amount of memory above 1 MB has been found and verified.
4Bh 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.
Description
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