(
('
,(
·f
\~,
(
(
GETR DA,
Ry
(op code 0): A data byte
is
transferred
from an I/O device designated by DA, via bus in,
to
the
low order byte
of
data register (Ry).
The 'get
strobe'
is
activated
on
this microinstruction.
GETR Data Table
Device
Address
Device
Bits
State
Bits 4-7
Name
8-15
of
Bit Definition
0 Controller Not used
11
Nonexecutable
Use
two
GETB microinstructions
to
get even-odd bytes
ROS
8
ROS
data
byte bit 0
9
ROS data byte bit 1
10
ROS
data
byte bit 2
11
ROS data byte bit 3
12 ROS data byte bit 4
13 ROS data byte bit 5
14
ROS
data
byte bit 6
15
ROS data byte bit 7
2
Not. assigned
3
4 Keyboard and
8 0
Keyboard data bit 0
control panel Not keyboard data bit 0
switches
9 0
Keyboard data bit 1
1 Not keyboard data bit 1
10 0
Keyboard data bit 2
1
Not keyboard data bit 2
11
0
Keyboard data bit 3
1
Not keyboard data bit 3
12 0 Keyboard data bit 4
1
Not keyboard data bit 4
13 0
Keyboard data bit 5
1
Not keyboard data bit 5
14 0
Keyboard data bit 6
1
Not keyboard data bit 6
15
0
Keyboard data bit
7
Not keyboard
data
bit 7
1 Device has subdevice addressing capability. See
the
1/0 microinstructions description under Microinstructions
in
this section.
Microinstructions
e·g
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