User`s guide

112
Chapter 4: Solving Problems
22 1-3-1-3 Test 8742 Keyboard Controller
24 Set ES segment register to 4 GB
28 1-3-3-1 Autosize DRAM
2A Clear 512K base RAM
2C 1-3-4-1 RAM failure on address line xxxx*
2E 1-3-4-3 RAM failure on data bits xxxx* of low byte of memory bus
30 1-4-1-1 RAM failureon databitsxxxx* ofhigh byteof memorybus
32 Test processor bus-clock frequency
34 Test CMOS
35 RAM Initialize alternate chipset registers
36 Warm start shut down
37 Reinitialize the chipset (MB only)
38 Shadow system BIOS ROM
39 Reinitialize the cache (MB only)
3A Autosize cache
3C Configure advanced chipset registers
3D Load alternate registers with CMOS valuesnew
40 Set Initial processor speed new
42 Initialize interrupt vectors
44 Initialize BIOS interrupts
46 2-1-2-3 Check ROM copyright notice
47 Initialize manager for PCI Option ROMs
48 Check video configuration against CMOS
Table 4-1 (continued) Port-80 Codes
Normal Port 80
Codes
Beeps Error