IBM 5251 Series Maintenance Information Manual page 124

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727374757677 78 79 80
by Microprocessor Counter Level 0 Level 1
Last Command Before Cursor Always Hexadecimal ()()
Exception Register Last Keystroke
Last Exception
Condition
Exception Condition
Count
'-----Line Parity Error
Count
Line
Position
1
2
3
4
5
6-11
12
13
14-19
20
21
22
23
24
25
26-35
36-51
52-53
Line parity error count
Exception condition count
Last exception condition "
Last command before exception
Last command processed by
microprocessor
(not used)
Time slice return address hi
Time slice return address 10
Time slice register save area
Address counter hi
Address counter 10
Cursor register hi
Cursor register 10
Reference counter hi
Reference counter 10
(not used)
Cable adapter command queue
Poll response level 0
Line 25 Infonnation
L-.-----Address
Counter
The above illustration shows the most commonly used information. The
table indicates all the information displayed on line 25 while the Status
switch is set to the Test position. An alternative display of line
25
occurs
whenever the last key log (position
76)
contains the break bit. This
is a result of pressing and releasing any shift key before or during the
time the Status switch is set to the Test position.
Line
Position
54
55
56-59
60-61
62
63-67
68
69
70
71
72
73
74
75
76
77
78-79
80
Keystroke Q u e u e - - - - - - - - - - - - '
(most recent
leftmost byte)
Audible Alarm _ _ _ _ _ _
- J
Click Count
Normal Display
Attribute Hexadecimal 2 0 - - - - - - - '
Alternative Display
Poll response delimiter
Always hexadecimal
00
Keyboard keystroke queue
Poll response level 1
Poll response delimiter
(not used)
Cable adapter control register hi
Cable adapter control register 10
Cable adapter address register hi
Cable adapter address register 10
Cable adapter length register hi
Cable adapter length register 10
Cable adapter sense register
Last cable adapter sense register value
(stored by microcode)
Keycode of last key that was pressed
Audible alarm clicker count
User accessible address limit
Normal display attribute hexadecimal
20
Line
Position
1-16
17-32
33
34-39
40-43
44-45
46
(not used)
I/O device data storage area
Keylock feature status
hexadecimal 00 if off or not installed
(not used)
Subroutine save area
Save area
Same as position 1 of main display
o
N