RCA 301 Programmer's Reference Manual page 59

J Transfer Symbol To Fill (SF)
General Description
This instruction inserts a selected symbol into each HSM location between arid including the two given addresses.
Format
Operation —J
, N — Selected Symbol
A Address — Leftmost location in memory to be filled.
B Address — Rightmost location in memory to be filled.
Direction of Operation
Left to right.
Outline of Operation
This instruction operates in the following cycle:
The contents of the N Register are transferred to the HSM location specified by the A Register. The contents
of the A Register are compared with the contents of the B Register. If this comparison proves equal, the contents
of the A Register are incremented by one and the instruction terminates. If the operation proves unequal, the
contents of the A Register are incremented by one, and the cycle is repeated.
Final Register Contents
(A) = (B), + 1
f
(B), = (B),
Timing
Total time in microseconds
= 7n + 35, where n equals the number of locations filled.
Example
Instruction:
Operation
T
HSM before Instruction is Executed:
3000 3001 3002
S
J
—
HSM after Instruction is Executed:
3002
3000 3001
0 0
J
Final Register Contents:
(A), = 3010
(B), =3009
Time:
(9 x 7) + 35 = 98 jxs.
N
0
3005
3003 3004
T
M I
3003 3004 3005
0
0 0
A Address
3001
3007 3008
3006
H
—
—
3008
3006 3007
0 0
0
B Address
3009
3010
3009
I
I
3010
3009
0 I
V-13