UPD750004A datasheet(40/84 Pages) NEC

40 / 84 page

µPD750004, 750006, 750008, 750004(A), 750006(A), 750008(A)

Description

Representation

format

11. INSTRUCTION SET

(1) Operand identifier and its descriptive method

The operands are described in the operand column of each instruction according to the descriptive method for

the operand format of the appropriate instructions. (For details, refer to

RA75X Assembler Package User's

Manual: Language (EEU-1363).) For descriptions in which alternatives exist, one element should be selected.

Capital letters and plus and minus signs are keywords; therefore, they should be described as they are.

For immediate data, the appropriate numerical values or labels should be described.

The symbols of register flags can be used as a label instead of mem, fmem, pmem, and bit. (For details, refer

µPD750008 User’s Manual (U10740E).) However, there are some restrictions on usable labels for fmem and

pmem.

Note Only even address can be specified for 8-bit data processing.

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

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

XA, BC, DE, HL

BC, DE, HL

BC, DE

XA, BC, DE, HL, XA', BC', DE', HL'

BC, DE, HL, XA', BC', DE', HL'

HL, HL+, HL-, DE, DL

DE, DL

4-bit immediate data or label

8-bit immediate data or label

8-bit immediate data or labelNote

2-bit immediate data or label

FB0H - FBFH, FF0H - FFFH immediate data or label

FC0H - FFFH immediate data or label

0000H - 0FFFH immediate data or label (

µPD750004)

0000H - 17FFH immediate data or label (

µPD750006)

0000H - 1FFFH immediate data or label (

µPD750008)

0000H - 0FFFH immediate data or label (

µPD750004)

0000H - 17FFH immediate data or label (

µPD750006)

0000H - 1FFFH immediate data or label (

µPD750008)

12-bit immediate data or label

11-bit immediate data or label

20H - 7FH immediate data (however, bit 0 = 0) or label

PORT0 - PORT8

IEBT, IET0, IET1, IE0 - IE2, IE4, IECSI, IEW

RB0 - RB3

MB0, MB1, MB15

reg

reg1

rp1

rp2

rp'

rp'1

rpa

rpa1

mem

bit

fmem

pmem

addr

addr1(for Mk

ΙΙ

mode only)

caddr

faddr

taddr

PORTn

×××

RBn

MBn

UPD750004A Datasheet(PDF) 40 Page - NEC

UPD750004A Datasheet(HTML) 40 Page - NEC

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