S3C84E5/C84E9/P84E9

ADDRESSING MODES

 

 

INDIRECT REGISTER ADDRESSING MODE (Continued)

 

 

 

Program Memory

 

4-bit

 

 

 

 

 

 

 

 

 

 

Working

 

 

 

 

 

 

 

dst

src

 

 

Register

 

 

 

 

OPCODE

 

Address

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sample Instruction:

OR

R3, @R6

 

Register File

MSB Points to

 

RP0 or RP1

RP0 or RP1

 

~

~

3 LSBs

 

Point to the

ADDRESS

Working Register

 

(1 of 8)

 

~

~

Value used in

OPERAND

Instruction

 

Selected RP points to start fo working register block

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

3-5

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Samsung S3C84E5 user manual Indirect Working Register Addressing to Register File