|
Beep Port |
Description |
Code |
80h |
1-1-3 |
02h |
CMOS write/read failure |
1-1-4 |
03h |
ROM BIOS checksum failure |
1-2-1 |
04h |
Programmable interval timer failure |
1-2-2 |
05h |
DMA initialization failure |
1-2-3 |
06h |
DMA page register write/read failure |
1-3-1 |
08h |
RAM refresh verification failure |
1-3-3 |
0Ah |
First 64k RAM chip or data line failure, multi-bit |
1-3-4 |
0Bh |
First 64k RAM odd/even logic failure |
1-4-1 |
0Ch |
Address line failure first 64k RAM |
1-4-2 |
0Dh |
Parity failure first 64k RAM |
2-1-1 |
10h |
Bit 0 first 64k RAM failure |
2-1-2 |
11h |
Bit 1 first 64k RAM failure |
2-1-3 |
12h |
Bit 2 first 64k RAM failure |
2-1-4 |
13h |
Bit 3 first 64k RAM failure |
2-2-1 |
14h |
Bit 4 first 64k RAM failure |
2-2-2 |
15h |
Bit 5 first 64k RAM failure |
2-2-3 |
16h |
Bit 6 first 64k RAM failure |
2-2-4 |
17h |
Bit 7 first 64k RAM failure |
2-3-1 |
18h |
Bit 8 first 64k RAM failure |
2-3-2 |
19h |
Bit 9 first 64k RAM failure |
2-3-3 |
1Ah |
Bit 10 first 64k RAM failure |
2-3-4 |
1Bh |
Bit 11 first 64k RAM failure |
2-4-1 |
1Ch |
Bit 12 first 64k RAM failure |
2-4-2 |
1Dh |
Bit 13 first 64k RAM failure |
2-4-3 |
1Eh |
Bit 14 first 64k RAM failure |
2-4-4 |
1Fh |
Bit 15 first 64k RAM failure |
3-1-1 |
20h |
Slave DMA register failure |
3-1-2 |
21h |
Master DMA register failure |
3-1-3 |
22h |
Master interrupt mask register failure |
3-1-4 |
23h |
Slave interrupt mask register failure |
3-2-4 |
27h |
Keyboard controller test failure |
3-3-4 |
2Bh |
Screen initialization failure |
3-4-1 |
2Ch |
Screen retrace test failure |
3-4-2 |
2Dh |
Search for video ROM in progress |
4-2-1 |
34h |
Timer tick interrupt test in progress or failure |
4-2-2 |
35h |
Shutdown test in progress or failure |
4-2-3 |
36h |
Gate A20 failure |
4-2-4 |
37h |
Unexpected interrupt in protected mode |
4-3-1 |
38h |
RAM test in progress or address failure > FFFFh |
4-3-3 |
3Ah |
Interval timer channel 2 test or failure |
4-3-4 |
3Bh |
Time-of-day clock test or failure |
4-4-1 |
3Ch |
Serial port test or failure |
4-4-2 |
3Dh |
Parallel port test or failure |
4-4-3 |
3Eh |
Math coprocessor test or failure |