00 |
Reserved; Beep and halt
if error occurs |
01 |
Test CPU registers |
02 |
Test the 8042 keyboard
controller buffer |
03 |
Test the 8042 keyboard
controller reset |
04 |
Verify presence of keyboard
and check communication |
05 |
Read keyboard input port
(WS386SX16) |
06 |
Initialize system board
support chipset |
09 |
Test BIOS ROM checksum |
0D |
Test 8254 programmable
interrupt timer registers (13 short beeps) |
0E |
Test ASIC registers (CLEM
only, 14 short beeps) |
0F |
Test CMOS RAM shutdown
byte (15 short beeps) |
10 |
Test DMA controller 0 registers |
11 |
Test DMA controller 1 registers |
12 |
Test DMA page registers
(EGA.VGA vertical retrace failed) |
13 |
EGA/VGA RAM test failed |
14 |
Test memory refresh toggle
(EGA/VGA CRT registers failed) |
15 |
Test base 64KB memory |
16 |
Set interrupt vectors in
base memory |
17 |
Initialize video |
18 |
Test display memory |
20 |
EISA bus board power on
(EISA systems only) |
30 |
Test programmable interrupt
controller #1 mask register |
31 |
Test programmable interrupt
controller #2 mask register |
32 |
Test programmable interrupt
controller's for stuck interrupts |
33 |
Test for stuck NMI (P386
25.33, P486, CLAM and EISA) |
34 |
Test for stuck DDNIL status
(CLEM only) |
40 |
Test CMOS RAM backup battery |
41 |
Calculate and verify CMOS
checksum |
42 |
Setup CMOS RAM options
(except WS386SX16) |
50 |
Test the protected mode |
51 |
Test protected mode exceptions |
60 |
Calculate RAM size |
61 |
Test RAM |
62 |
Test shadow RAM (WS386SX16,
P386 25/33, P486, CLEM, EISA); test cache (P386/16) |
63 |
Test cache memory (P386
25/33, P486, CLEM, EISA); copy video BIOS to shadow RAM (p386C, P386/16,
WS386SX16) |
64 |
Copy system BIOS to shadow
RAM (P386 25/33, P486, CLEM,EISA); Copy video BIOS to shadow RAM (P386
16, WS386SX16) |
65 |
Copy video BIOS to shadow
RAM P386 25/33, P486, CLEM,EISA); Test cache (WS386SX16) |
66 |
Test 8254 programmable
interrupt timer channel 2 (P386 25/33, P486, EISA) |
67 |
Initialize memory (Eagle
only) |