UPD75048CW 查看數據表（PDF） - NEC => Renesas Technology

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UPD75048CW

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75048

10. INSTRUCTION SET

(1) Operand representation and description

Describe one or more operands in the operand field of each instruction according to the operand

representation and description methods of the instruction (for details, refer to RA75X Assembler

Package User's Manual - Language (EEU-730). With some instructions, only one operand should

be selected from several operands. The uppercase characters, +, and - are keywords and must be

described as is.

Describe an appropriate numeric value or label as immediate data.

The symbols of the register flags can be described in the places of mem, fmem, pmem, and bit.

(For details, refer to µPD75048 User's Manual (IEU-704). However, fmem and pmem restricts

the label that can be described.

Representation

Description

reg

reg1

X, A, B, C, D, E, H, L

X, B, C, D, E, H, L

rp

XA, BC, DE, HL

rp1

BC, DE, HL

rp2

BC, DE

rpa

rpa1

HL, DE, DL

DE, DL

n4

4-bit immediate data or label

n8

8-bit immediate data or label

mem*

bit

8-bit immediate data or label

2-bit immediate data or label

fmem

pmem

FB0H to FBFH, FF0H to FFFH immediate data or label

FC0H to FFFH immediate data or label

addr

caddr

faddr

0000H to 1F7FH immediate data or label

12-bit immediate data or label

11-bit immediate data or label

taddr

20H to 7FH immediate data (where bit0=0) or label

PORTn

IExxx

MBn

PORT0 to PORT11

IEBT, IECSI, IET0, IE0, IE1, IE2, IE4, IEW, IEMFT,

IEEE, IEOW

MB0, MB1, MB4, MB5, MB6, MB7, MB15

*: Only even addresses can be described as mem for 8-bit data processing.

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