RCA 301, Programmer'S Reference Manual

Page: 106 / 235

; Input/Out put Cont rol (IOC)
F
r
ea.4vf « •oo-V e>
57
General Description
This instruction performs the Read Release, Punch Release and Stacker Select functions for the Card Reader-
Punch, Model 330, and the Read Release function for the Card Readers, Model 324 and 329.
Format
Operation — ;
N -(
A Address — A
0
, A
l5
A
2
— Must be zeros (000).
— A
3
— designates function to be performed:
M <?T _
FUNCTION
A
3
Card Reader—Punch
Card Reader Card Reader
Model 330 Model 324 Model 329
1 Select Reader Stacker No. 1
2 Select Reader Stacker No. 2
3
Select Punch Stacker No. 4
4
Select Punch Stacker No. 8
5 Read Release Read Release
Read Release
6 Punch Release
f
7
Read Release and Select Stacker No. 1
•
8
Read Release and Select Stacker No. 2
Punch Release and Select Stacker No. 4
v sp.
Punch Release and Select Stacker No. 8
B Address — Must be zeros (0000).
Outline of Operation
The A
3
character is sent to the control module. After the operation is initiated, the registers are available for
use by the next instruction.
Final Register Contents
(A), - (A),
(B)
t
= (B),
Timing
42
M
s.
VIII-20