Beep code
Contents
Port 80h
Description
None
01h
CPU register test in progress.
1-1-3
02h
CMOS read/write failure.
1-1-4
03h
ROM BIOS check 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.
None
09h
First 64K RAM test in progress.
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.
2-2-4
1Bh
Bit 11 first 64K RAM failure.
2-3-1
1Ch
Bit 12 first 64K RAM failure.
2-4-2
1Dh
Bit 13 first 64K RAM failure.
Micronics M5Pi System Board Manual
B-2
