Table of Contents
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Checkpoint Code
38
39
3A
3B
3C
40
50
52
60
75
78
7A
7C
84
85
87
8C
Description
Initializes different devices through DIM.
Initializes DMAC-1 and DMAC-2.
Initialize RTC date/time.
Test for total memory installed in the system. Also,
Check for DEL or ESC keys to limit memory test. Dis-
play total memory in the system.
Mid POST initialization of chipset registers.
Detect different devices (Parallel ports, serial ports,
and coprocessor in CPU, etc.) successfully installed in
the system and update the BDA, EBDA, etc.
Programming the memory hole or any kind of imple-
mentation that needs an adjustment in system RAM
size if needed.
Updates CMOS memory size from memory found in
memory test. Allocates memory for Extended BIOS
Data Area from base memory.
Initializes NUM-LOCK status and programs the KBD
typematic rate.
Initialize Int-13 and prepare for IPL detection.
Initializes IPL devices controlled by BIOS and option
ROMs.
Initializes remaining option ROMs.
Generate and write contents of ESCD in NVRam.
Log errors encountered during POST.
Display errors to the user and gets the user response
for error.
Execute BIOS setup if needed / requested.
Late POST initialization of chipset registers.
33
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