Instruction Manual
17
Phoenix BIOS POST Test Code Listing
POST Code
Phoenix POST Routine Description
02
Verify real mode.
04
Get CPU type.
06
Initialize system hardware.
08
Initialize chipset register with initial POST value.
09
Set in POST flag.
0A
Initialize CPU register.
0C
Initialize cache to initial POST values.
0E
Initialize I/O CPU register.
0F
Initialize the local BUS IDE.
10
Initialize power management.
11
Load alternate registers with initial POST values.
12
Jump to UserPatch0.
14
Initialize keyboard control.
16
BIOS ROM checksum.
18
5254 timer initialization.
1A
8237 DMA controller initialization.
20
Test DRAM refresh.
22
Test 8042 keyboard controller.
24
Set ES segment register to 4 GB.
26
Autosize DRAM.
2A
Clear 512K base RAM.
2C
Teat 512K base address line.
2E
Test 512K base memory.
