Programming instructions

Common IOT 1
Common IOT 2
Common IOT 3
Figure 29.Typical Pulse Amplifier, Type 4605, used in
PDP-4 Device Selector. Example shown is wired to pass
the iot address 001101. The six-level AND gate will pass
only that address if it is present in the instruction word
from the Memory Buffer, thus enabling three AND gates
to pass three IO pulses to the pulse amplifier.
The Device Selector modules are delivered with jumpers across the address
terminals. The user can remove appropriate jumpers to establish the
module select mode according to the table below.
Instruction
Word Bit
6
ii
9
ZERO Input
Terminal
M
P
S
U
W
Y
ONE Input
Terminal
N
R
T
V
X
Z
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