Mnemonic

Opcode

Format

Affected

Description

Section

A

A0

1

All

Add

4.4.1

ABS

80

6

None

Absolute Value

4.4.9

ADD

A0

1

All

Add

4.4.1

ALL

07

2

None

Load Screen

4.5.3

AND

B0

1

All

Logical And

4.4.12

B

05

3

COND

Long Branch

4.2.3

BACK

04

2

None

Load Border Colour

4.5.2

BR

40

4

COND

Branch On Reset

4.2.2

BS

60

4

COND

Branch On Set

4.2.1

CALL

06

3

COND

Call Subroutine

4.2.5

CARRY

0C

5

COND

Carry Status To COND

4.1.3

CASE

8A

6

COND

Case Branch

4.2.4

CEQ

D4

1

COND

Compare Equal

4.1.5

CGE

D0

1

COND

Compare Greater Or Equal

4.1.9

CGT

CC

1

COND

Compare Greater

4.1.8

CH

C4

1

COND

Compare High

4.1.6

CHE

C8

1

COND

Compare High Or Equal

4.1.7

CLOG

D8

1

COND

Compare Logical

4.1.10

CLR

86

6

None

Clear

4.4.15

COINC

ED

1

COND

Coincidence

4.5.1

CONT

10

5

None

Basic Continue

-

CZ

8E

6

COND

Compare To Zero

4.1.11

D

AC

1

All

Divide

4.4.4

DEC

92

6

All

Decrement By One

4.4.7

DECT

96

6

All

Decrement By Two

4.4.8

DIV

AC

1

All

Divide

4.4.4

EX

C0

1

None

Exchange

4.4.17

EXEC

11

5

All

Basic Routine

-

EXIT

0B

5

None

Exit Program

4.5.8

FETCH

88

6

None

Fetch From Call

4.2.6

FMT

08

7

 

Format Screen

4.5.4

GT

0A

5

COND

Greater Status To COND

4.1.2

H

09

5

COND

High Status To COND

4.1.1

INC

90

6

All

Increment By One

4.4.5

INCT

94

6

All

Increment By Two

4.4.6

I/O

F6

8

None

Special I/O

4.5.9

INV

84

6

None

Invert (One's Complement)

4.4.11

MOVE

20

9

None

Move Data

4.4.20

M

A8

1

None

Multiply

4.4.3

MUL

A8

1

None

Multiply

4.4.3

NEG

82

6

None

Negate (Two's complement)

4.4.10

OR

B4

1

All

Logical Or

4.4.13

OVF

0D

5

COND

Overflow Status To COND

4.1.4

PARSE

0E

2

All

Basic Parse

-

PUSH

8C

6

None

Push Data Stack

4.4.18

RAND

02

2

None

Random Number

4.5.5

RB

B0

1

All

Reset Bit

4.3

RTN

00

5

COND

Return From Subroutine

4.2.7

RTNB

12

5

All

Basic Return

-

RTNC

01

5

None

Return From Subroutine

4.2.8

S

A4

1

All

Subtract

4.4.2

SB

B4

1

All

Set Bit

4.3

SCAN

03

5

COND

Scan Keyboard

4.5.6

SLL

E0

1

None

Shift Left Logical

4.4.21

SRA

DC

1

None

Shift Right Arithmetic

4.4.22

SRC

E8

1

None

Shift Right Circular

4.4.24

SRL

E4

1

None

Shift Right Logical

4.4.23

ST

BC

1

None

Store

4.4.16

SUB

A4

1

All

Subtract

4.4.2

TBR

D8

1

COND

Test Bit Reset

4.3

XML

0F

2

None

Execute Machine Language

4.5.7

XOR

B8

1

All

Logical Exclusive Or

4.4.14