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6 Tests and Error Messages
Order in Which POST Tests Are Performed
06h Initialize system hardware
08h Initialize chipset with initial POST values
09h Set IN POST flag P.O.S.T Start
0Ah Initialize CPU registers CPU Regist. Init
0Bh Enable CPU cache
0Ch Initialize caches to initial POST values
0Eh Initialize I/O component I/O Init.
0Fh Initialize the local bus IDE IDE Init.
10h Initialize Power Management
11h Load alternate registers with initial POST values
12h Restore CPU control word during warm boot
13h Initialize PCI Bus Mastering devices PCI Mast. Init.
14h Initialize keyboard controller
16h BIOS ROM checksum BIOS Check sum
17h Initialize cache before memory autosize
18h 8254 timer initialization
1Ah 8237 DMA controller initialization
1Ch Reset Programmable Interrupt Controller
20h Test DRAM refresh RAM Refresh Test
22h Test 8742 keyboard controller Keyb. Ctrl. Test
24h Set ES segment register to 4 GB
26h Enable A20 line
28h Autosize DRAM Memory Detection 3
29h Initialize POST Memory Manager
2Ah Clear 512 KB base RAM
Checkpoint
Code
POST Routine Description
MaxiLife LCD
Display
Message
Beep
Codes