| Term | Definition |
|---|
| Instruction |
Consists of an opcode, a modifier, an A-operand, and a B-operand |
| A-operand |
Consists of an A-mode and an A-number |
| A-mode |
Addressing mode of an A-operand |
| A-number |
Integer between 0 and core size - 1, inclusive |
| B-operand |
Consists of a B-mode and a B-number |
| B-mode |
Addressing mode of a B-operand |
| B-number |
integer between 0 and core size - 1, inclusive |
|
| Term | Definition |
|---|
| Program counter |
Pointer to the location in core of the instruction fetched from core to execute
|
| Current instruction |
The instruction in the instruction register, as copied (prior to execution)
from the PC location of core.
|
| A-pointer |
Points to the instruction, the A-operand of the current instruction
references in core
|
| A-instruction |
Copy of the instruction the A-pointer points to in core
(as it was during operand evaluation)
|
| A-value |
A-number and/or the B-number of the A-instruction or
the A-instruction itself, whichever are/is selected by the opcode modifier.
|
| B-pointer |
Points to the instruction, the B-operand of the current instruction references in core.
|
| B-instruction |
Copy of the instruction the B-pointer points to in core (as it was during operand evaluation)
|
| B-value |
A-number and/or the B-number of the B-instruction or the B-instruction itself,
whichever are/is selected by the opcode modifier.
|
| B-target |
A-number and/or the B-number of the instruction pointed to by the B-pointer
or the instruction itself, whichever are/is selected by the opcode modifier.
|