Bios Reference-Post Codes - JETWAY J-530BF User Manual

3-17 BIOS REFERENCE-POST CODES

ISA PORT codes are typically output to port address 80h.
Post
CO Turn Off Chipset Cache
1 Processor Test 1
2 Processor Test 2
02 Minutes
03 Minutes alarm
04 Hours
05 Hours alarm
06 Day of week
07 Day of month
08 Month
09 Year
0A Status register A
0B Status register B
0C Status register C
0D Status register D
0E Diagnostic status byte
0F Shutdown byte
10 FLOPPY DISK drive type byte
11 Reserve
12 HARD DISK type byte
13 Reserve
14 Equipment type
15 Base memory low byte
16 Base memory high byte
17 Extension memory low byte
18 Extension memory high byte
19-2d
2E-2F
30 Reserved for extension memory low byte
31 Reserved for extension memory high byte
32 DATE CENTURY byte
33 INFORMATION FLAG
34-3F Reserve
40-7F Reserved for CHIPSET SETTING DATA
Name
OEM Specific-Cache controller.
Processor Status (1 FLAGS) Verification.
Tests the following processor status flags carry, zero,
sign, overflow.
The BIOS will set each of these flags, verify the are set,
then turn each flag off and verify it is off.
Read/ Write/ Verify all CPU registers except SS, SP, and
BP with data pattern FF and OO.
Description
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