Samsung C8278X ユーザーズマニュアル

Register File

OPERAND

Program Memory

or

Data Memory

Point to Working

Register Pair

LSB Selects

16-Bit
address
added to
offset

RP0 or RP1

MSB Points to

RP0 or RP1

Selected
RP points
to start of
working
register
block

Sample Instructions:

LDC

R4, #1000H[RR2]

;   The values in the program address (RR2 + 1000H)
    are loaded into register R4.

LDE

R4,#1000H[RR2]

;   Identical operation to LDC example, except that
    external program memory is accessed.

NEXT 2 Bits

Register

Pair

Value used in
Instruction

8-Bits

16-Bits

16-Bits

dst/src

OPCODE

Program Memory

src

OFFSET

4-bit Working

Register Address

OFFSET

+

~

~