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AMI Old BIOS (AMI Plus BIOS); 08/15/88?a04/08/90

Code

Meaning

01

NMI disabled & 286 reg. test about to start

02

286 register test over

03

ROM checksum OK

04

8259 initialization OK

05

CMOS pending interrupt disabled

06

Video disabled & system timer counting OK

07

CH-2 of 8253 test OK

08

CH-2 delta count test OK

09

CH-1 delta count test OK

0A

CH-0 delta count test OK

0B

Parity status cleared

0C

Refresh & system timer OK

0D

Refresh link toggling OK

0E

Refresh period ON/OFF 50% OK

10

Confirmed refresh ON & about to start 64K memory

11

Address line test OK

12

64K base memory test OK

13

Interrupt vectors initialized

14

8042 keyboard controller test OK

15

CMOS read/write test OK

16

CMOS checksum/battery check OK

17

Monochrome mode set OK

18

Colour mode set OK

19

About to look for optional video ROM

1A

Optional video ROM control OK

1B

Display memory read/write test OK

1C

Display memory read/write test for alt display OK

1D

Video retrace check OK

1E

Global equipment byte set for video OK

1F

Mode set call for Mono/Colour OK

20

Video test OK

21

Video display OK

22

Power on message display OK

30

Virtual mode memory test about to begin

31

Virtual mode memory test started

32

Processor in virtual mode

33

Memory address line test in progress

34

Memory address line test in progress

35

Memory below 1MB calculated

36

Memory size computation OK

37

Memory test in progress

38

Memory initialization over below 1MB

39

Memory initialization over above 1MB

3A

Display memory size

3B

About to start below 1MB memory test

3C

Memory test below 1MB OK

3D

Memory test above 1MB OK

3E

About to go to real mode (shutdown)

3F

Shutdown successful and entered in real mode

40

About to disable gate A-20 address line

41

Gate A-20 line disabled successfully

42

About to start DMA controller test

4E

Address line test OK

4F

Processor in real mode after shutdown

50

DMA page register test OK

51

DMA unit-1 base register test about to start

52

DMA unit-1 channel OK; about to begin CH-2

53

DMA CH-2 base register test OK

54

About to test f/f latch for unit-1

55

f/f latch test both unit OK

56

DMA unit 1 & 2 programmed OK

57

8259 initialization over

58

8259 mask register check OK

59

Master 8259 mask register OK; about to start slave

5A

About to check timer and keyboard interrupt level

5B

Timer interrupt OK

5C

About to test keyboard interrupt

5D

ERROR! timer/keyboard interrupt not in proper level

5E

8259 interrupt controller error

5F

8259 interrupt controller test OK

70

Start of keyboard test

71

Keyboard BAT test OK

72

Keyboard test OK

73

Keyboard global data initialization OK

74

Floppy setup about to start

75

Floppy setup OK

76

Hard disk setup about to start

77

Hard disk setup OK

79

About to initialize timer data area

7A

Verify CMOS battery power

7B

CMOS battery verification done

7D

About to analyze diagnostic test results for memory

7E

CMOS memory size update OK

7F

About to check optional ROM C000:0

80

Keyboard sensed to enable setup

81

Optional ROM control OK

82

Printer global data initialization OK

83

RS-232 global data initialization OK

84

80287 check/test OK

85

About to display soft error message

86

About to give control to system ROM E000:0

87

System ROM E000:0 check over

00

Control given to Int-19; boot loader

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