IBM PD78082 Benutzerhandbuch

CHAPTER 3 CPU ARCHITECTURE

3.4.3 Direct addressing

[Function]

This addressing directly addresses the memory indicated by the immediate data in an instruction word.

[Operand format]

Identifier

Description

addr16

Label or 16-bit immediate data

[Description example]

MOV A, !0FE00H; when setting !addr16 to FE00H

Operation code

1 0 0 0 1 1 1 0

OP code

0 0 0 0 0 0 0 0

00H

1 1 1 1 1 1 1 0

FEH

[Illustration]

Memory

OP code

saddr16 (low)

saddr16 (high)