Control Data Corporation INFORMATION SYSTEMS TERMINAL II Hardware Maintenance Manual page 97

TABLE 4-5. INPUT AND OUTPUT FUNCTIONS
ADDRESS*
NORMALIZED
I/O
DESCRIPTION
7 6 5 4 3 2
1 0
(HEX)**
X X
0
X 0 0 0 0
00
I
Read configuration
switches
X X 0 X 0 0 0 0
00 0
Load maintenance
register
X X 0 X 0 0 0 1
01 I
Read keyboard data
X X 0 X 0 0 0 1 01
0
Load transmitter
lower bits
X X 0 X 0 0 1 0 02 I
Read touchpane1 data
X X 0 X 0 0 1 0 02
0
Load transmitter
upper bits
X X 0 X 0 0 1 1 03 I
Read lower 1D
X X 0 X 0 0 1 1 03
0 Bulk write/erase -
video enable
X X 0 X 0 1 0 0 04 I
Read upper ID
X X 0 X 0 1 0 0
04
0
Load interrupt mask
X X 0 X 0 1 0 1
05
I
Read serial data
X X 0 X 0
1 0 1 05
0
Miscellaneous control
X X 0 X 0 1 1 0 06 I
Read serial status
X X 0 X 0 1 1 0 06
0
Load serial data
X X 0 X 0 1 1 1
07 I
Read controller status
X X 0 X 0 1 1 1 07
0
Load serial control
X X 0 X 1 X X X 08 I Read communication line
X X 1 Y Y Y Y Y 2Y,3Y I Input - parallel
channel
X X 1 Y Y Y Y Y
2Y,3Y
0
Output - parallel
channel
*X =
o
or 1 irrelevant. Y
=
External device address.
**The normalized hexadecimal code is obtained by making X
=
o.
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