IBM 5100 Maintenance Information Manual page 359

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Control Command Data Table (Continued)
Device
Address Device
Bits
State
Bits 4-7
Name 8-15 of Bit Definition
F
All I/O 8 0 No action
1
Reset expansion feature (DA
=
8)
9 0 No action
1 Reset tape (DA
=
E)
10
0 No action
1 Reset keyboard (DA
=
4)
11 0 No action
1 Reset printer (DA
=
5)
12 0 No action
1 Enable cycle steal for display (un blank display)
13 0 No action
1
Reset (DA
=
B)
14 0 No action
1 Reset (DA
=
C)
15 0 No action
Reset (DA
=
D)
GETA DA, Ry (op code 0): A data byte is transferred
from an I/O device designated by DA to the controller on
bus in. The contents of the data register (Ry) have a value
added to it depending on the data received from the
device:
Bus In Bits 0 1 2 3 4 5 6 7
1 1 1 X
1 1 1 1 1 0 X
1 lOX X
1110XXX
110XXXX
OXXXXX
10XXXXXX
OXXXXXXX
The Xs are don't cares.
Quantity Added
o
2
4
6
8
A
C
E
Bus in is not parity checked on this microinstruction.
'Get strobe' is activated on this microinstruction.
:$
if
I
Microinstructions C-7