F0

20

F1

C0

F2

30

F3

F8

F4

20

F5

00

F6

30

F7

F9

F8

FF

F9

FF

Op-Code

Operand

Description

1

RXY

LOAD the register R with the bit pattern found in the memory cell whose address is XY

2

RXY

LOAD the register R with the bit XY

3

RXY

STORE the bit pattern found in register R in the memory cell whose address is XY

4

0RS

MOVE the bit pattern found in register R to register S

5

RST

ADD the bit patterns in registers S and T as though they were two's complement representations and leave the result in register R

6

RST

ADD the bit patterns in registers S and T as though they represented values in floating-point notation and leave the result in register R

7

RST

OR the bit pattern in registers S and T and place the result in register R

8

RST

AND the bit patterns in register S and T and place the result in register R

9

RST

Exclusive OR the bit patterns in registers S and T and place the result in register R

A

R0X

ROTATE the bit pattern in register R one bit to the right X times. Each time place the bit that started at the low-order end at the high-order end.

B

RXY

JUMP to the instruction located in the memory cell at address XY if the bit pattern in register R is equal to the bit pattern in register number 0. Otherwise, continue with the normal sequence of execution.

C

000

HALT execution