HP Notebook 100 Compaq Armada 100S and Notebook 100 Series Maintenance and Ser - Page 35

Table 2-1, Description, Reset PIC's 8259s. - pages

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Table 2-1 continued Code Description 12h Signal power on reset on COMS. 13h Initialize the chipset (DRAM). 14h Search for ISA bus VGA adapter. 15h Reset counter/timer 1, excite the RAM. 16h User register config. 18h Dispatch to 1st 64K RAM test. 19h Checksum the ROM. 1Ah Reset PIC's (8259s). 1Bh Initialize video adapter(s). 1Ch Initialize video (6845 regs). 1Dh Initialize color adapter. 1Eh Initialize monochrome adapter. 1Fh Test 8237A page registers. 2Oh Perform keyboard self-test. 21h Test and initialize keyboard controller. 22h Check if RAM valid. 23h Test battery fail & X-SUM. 24h Test DMA controllers. 25h Initialize 8237 controller. 26h Initialize interrupt vectors table. 27h RAM quick sizing. 28h Protected mode entered safely. 29h RAM test completed. 2Ah Protected mode exit successful. 2Bh Setup shadow. 2Ch Prepare to initialize video. 2Dh Search for monochrome adapter. 2Eh Search for color adapter, VGA initialize. continued Troubleshooting 2-3

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Troubleshooting
2
-
3
Table 2-1
continued
Code
Description
12h
Signal power on reset on COMS.
13h
Initialize the chipset (DRAM).
14h
Search for ISA bus VGA adapter.
15h
Reset counter/timer 1, excite the RAM.
16h
User register config.
18h
Dispatch to 1st 64K RAM test.
19h
Checksum the ROM.
1Ah
Reset PIC’s (8259s).
1Bh
Initialize video adapter(s).
1Ch
Initialize video (6845 regs).
1Dh
Initialize color adapter.
1Eh
Initialize monochrome adapter.
1Fh
Test 8237A page registers.
2Oh
Perform keyboard self-test.
21h
Test and initialize keyboard controller.
22h
Check if RAM valid.
23h
Test battery fail & X-SUM.
24h
Test DMA controllers.
25h
Initialize 8237 controller.
26h
Initialize interrupt vectors table.
27h
RAM quick sizing.
28h
Protected mode entered safely.
29h
RAM test completed.
2Ah
Protected mode exit successful.
2Bh
Setup shadow.
2Ch
Prepare to initialize video.
2Dh
Search for monochrome adapter.
2Eh
Search for color adapter, VGA initialize.
continued