Conventions
The conventions used in the documentation
Table of Contents
| Operands |
| An |
Any Address Register n (example: A3 is address register 3) |
| Dn |
Any Data Register n (example: D5 is data register 5) |
| Rn |
Any data or address registerData register D7–D0, used during compare. |
| PC |
Program counter |
| SR |
Status register |
| CCR |
Condition codes register (low order byte of SR) |
| SSP |
Supervisor stack pointer |
| USP |
User stack pointer |
| SP |
Active stack pointer (same as A7) |
| X |
Extend flag of the CCR |
| N |
Negative flag of the CCR |
| Z |
Zero flag of the CCR |
| V |
Overflow flag of the CCR |
| C |
Carry flag of the CCR |
| Immediate data |
Immediate data for the instruction |
| d |
Address displacement |
| Source |
Destination Source |
| contents |
Destination contents |
| Vector |
Location of exception vector |
| ea |
Any valid effective address |
| Notation |
| + |
Arithmetic addition or postincrement indicator
|
| – |
Arithmetic subtraction or predecrement indicator
|
| × |
Arithmetic multiplication
|
| ÷ |
Arithmetic division or conjunction symbol
|
| ~ |
Invert; operand is logically complemented.
|
| Λ |
Logical AND
|
| V |
Logical OR
|
| ⊕ |
Logical exclusive OR
|
| → |
Source operand is moved to destination operand.
|
| ←→ |
Two operands are exchanged.
|