|
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
|
