Intel MB440LX System Installation Manual page 215

Table 10-2. Port-80 Codes (continued)
Port 80 Code
18
1A
1C
20
22
24
28
2A
2C
2E
30
32
34
35
36
37
38
39
3A
3C
3D
M440LX Server System Product Guide
Reason
8254 timer initialization
8237 DMA controller initialization
Reset Programmable Interrupt Controller
Test DRAM refresh
Test 8742 Keyboard Controller
Set ES segment register to 4GB
Autosize DRAM
Clear 512K base RAM
RAM failure on address line xxxx*
RAM failure on data bits xxxx* of low byte of memory bus
RAM failure on data bits xxxx* of high byte of memory bus
Test CPU bus-clock frequency
Test CMOS
RAMInitialize alternate chipset registers.
Warm start shut down
Reinitialize the chipset (MB only)
Shadow system BIOS ROM
Reinitialize the cache (MB only)
Autosize cache
Configure advanced chipset registers
Load alternate registers with CMOS valuesnew
Continued
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