Below are the ALR Beep codes that can occur. However, because of the wide variety of different computer manufacturers with this BIOS, the beep codes may vary.
01 | CPU register test in progress |
02 | Real-time clock write/read failure |
03 | ROM BIOS checksum failure |
04 | Programmable internal timer failure (or no video card present) |
05 | DMA initialization failure |
06 | DMA page register write/read failure |
08 | RAM-refresh verification failure |
09 | 1st 64KB RAM test in progress |
0A | 1st 64KB RAM chip or data line multi-bit failure |
0B | 1st 64KB RAM odd/even logic failure |
0C | Address line failure 1st 64KB RAM |
0D | Parity failure 1st 64KB RAM |
10-1F | bit 0-15 64KB RAM failure |
20 | Slave DMA-register failure |
21 | Master DMA-register failure |
22 | Master-interrupt mask-register failure |
23 | Slave-interrupt mask-register failure |
25 | Interrupt vector loading in progress |
27 | Keyboard-controller test failure |
28 | RTC power failure and checksum calculation in progress |
29 | Real-time clock-configuration validation in progress |
2B | Screen-memory test failure |
2C | Screen-initialization failure |
2D | Screen-retrace test failure |
2E | Search believed operational on screen believed running with video ROM |
30 | Monochrome display believed operable |
32 | Color display (40 column) believed operable |
33 | Color display (80 column) believed operable |
Source:
February 22, 2014 Categories: