| 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 |
