Samsung 8-Bit CMOS Microcontroller Indirect Working Register Addressing to Register File

S3C9228/P9228 ADDRESSING MODES

INDIRECT REGISTER ADDRESSING MODE (Continued)

4-Bit Working Register Address

Program Memory

dst src

OPCODE

4 LSBs

Point to the

Woking Register

(1 of 16)

Register File

.

.

.

.

OPERAND

CFH

C0H

Sample Instruction:

		Value used in
OR	R6, @R2	Instruction

OPERAND

Figure 3-5. Indirect Working Register Addressing to Register File

3-5