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A
B
c
D
E
NU -
Reset receive flag and receive data buffer.
Reset transmit flag and data buffer.
Set receive mode. (Turn carrier off.)
Set transmit mode. (Turn carrier on.)
Reset receive clock.
Not used
EXTERNAL STATUS LINES
Mnemonic
Operand
Word Times
NES
A
B
c
D
E
F
G
H
NU -
I
1
AND EXTERNAL STATUS
LINES TO
Z.
A
logical AND is performed with I (1-10)
and the external status lines. The only results
are the new states of the plus, zero, and even
flip-flops.
The meaning of each line varies
with the particular input/output device.
BBC
CBC
WBC
RPU
NES 1
A
E
G
see
page
2
B
F
H
3
NU
J
NU
4
NU
K
5
c
G
6
D
M
7
NU
N
8
NU
NU
9
NU
NU
,,
0
NU
NU
NU
Receive flag is set (data buffer contains a new bit).
Transmit flag is set (data buffer is ready for a new bit).
Interlock on.
Carrier on.
Receive flag is set (data register contains a new character).
Transmit flag is set (data register is ready for a new character).
Receive flag is set (data register contains a new word).
Transmit flag is set (data register is ready for a new word).
Not used.
[IDfillf
fil~~lJCJ ~®------------
II-26
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