Appendix D: Industrial Devices

Checkpoint

 

 

Description

 

 

Code

 

 

 

 

 

 

 

 

 

 

37h

The display mode

is set. Displaying

the power

on

message next.

 

 

 

 

 

 

 

 

 

38h

Initializing the bus input, IPL, general devices next, if

present. See Table D-7for additional information.

 

 

 

39h

Displaying bus initialization error messages. See Table

D-7for additional information.

 

 

 

 

 

3Ah

The new

cursor position

has been read and saved.

Displaying the Hit <DEL> message next.

 

 

 

 

 

3Bh

The Hit <DEL> message is displayed. The protected

mode memory test is about to start.

 

 

 

 

 

40h

Preparing the descriptor tables next.

 

 

42h

The descriptor tables are prepared. Entering protected

mode for the memory test next.

 

 

 

 

 

43h

Entered

protected

mode.

Enabling

interrupts

for

diagnostics mode next.

 

 

 

 

 

 

 

 

Interrupts enabled if the diagnostics switch is on.

44h

Initializing data to check memory wraparound at 0:0

 

next.

 

 

 

 

 

45h

Data initialized. Checking

for memory wraparound

at

0:0 and finding the total system memory size next.

 

 

 

 

The memory wraparound test is done. Memory size

46h

calculation has been done. Writing patterns to test

 

memory next.

 

 

 

 

 

The memory pattern has been written to extended

47h

memory. Writing patterns to the base 640 KB memory

 

next.

 

 

 

 

 

48h

Patterns

written in

base

memory. Determining

the

amount of memory below 1 MB next.

 

 

 

 

 

 

The amount of memory below 1 MB has been found and

49h

verified. Determining the amount of memory above 1

 

MB memory next.

 

 

 

 

 

The amount of memory above 1 MB has been found and

4Bh

verified. Checking

for a soft reset and clearing

the

memory below 1 MB for the soft reset next. If this is a

 

 

power on situation, going to checkpoint 4Eh next.

 

4Ch

The memory below 1 MB has been cleared via a soft

reset. Clearing the memory above 1 MB next.

 

 

 

 

The memory above 1 MB has been cleared via a soft

4Dh

reset. Saving the memory size next. Going to checkpoint

 

52h next.

 

 

 

 

 

61

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Intel Raptor AT manual 3Ah