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Mylex/Eurosoft EISA/ISA

Code

Meaning

1

Always present?aindicates start of beep coding

2

Video adapter bad or not detected

3

Keyboard controller error

4

Keyboard error

5

8259 Programmable Interrupt Controller (PIC) 1 error

6

8259 PlC 2 error

7

DMA page register failure

8

RAM refresh error

9

RAM data test failed

10

RAM parity error occurred

11

8237 DMA controller 1 failed

12

CMOS RAM failure

13

8237 DMA controller 2 failed

14

CMOS RAM battery failure

15

CMOS RAM checksum error

16

BIOS ROM checksum error

Code

Meaning

01

Processor test

02

DMA Page Register

03

8042 keyboard controller

04

BIOS ROM Checksum error

05

Send keyboard command test bad

06

CMOS RAM Test

07

RAM Refresh Test

08

1st 64K memory test

09

8237 DMA controller test

0A

Initialise DMA controller

0B

Interrupt Test

0C

Determine RAM size

0D

Initialise video

0E

EGA/VGA ROM checksum test failed

10

Search for monochrome card

11

Search for colour card

12

Word splitter and byte shifter test failed

13

Keyboard Test

14

RAM Test failed

15

Timer test error

16

Initialise output port of keyboard controller

17

Keyboard interrupt test

18

Initialise keyboard

19

RTC clock test failure

1A

Maths copro test failure

1B

Reset hard/floppy controller

1C

Initialise floppy drive

1D

Initialise hard drive

1E

Initialise ROMs in C000-DFFF

1F

Initialise serial and parallel ports

20

Initialise time of day in RTC

21

Initialise ROMs in E000-EFFF

22

Look for boot device

23

Boot from floppy disk

24

Boot from hard disk

25

Gate A20 enable/disable failure

26

Parity error occurred

30

DDNIL bit scan failure

FF

Fatal error occurred and system halted

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