ST6369 datasheet(49/71 Pages) STMICROELECTRONICS

49 / 71 page

SOFTWARE DESCRIPTION (Continued)

Arithmetic and Logic. These instructions are

used to perform the arithmetic cal cul ations and

l ogic operations. In AND, ADD, CP, SUB instruc-

tions one operand is al ways the accumul ator

whil e the other can be either a data space memory

content or an immediate val ue in rel ation with the

addressing mode. In CLR, DEC, INC instructions

the operand can be any of the 256 data space

addresses. In COM, RLC, SLA the operand is

al ways the accumul ator. See Tabl e 13.

Instruction

Addressing Mode

Bytes

Cycles

Flags

ADD A, (X)

Indirect

∆∆

ADD A, (Y)

Indirect

∆∆

ADD A, rr

Direct

∆∆

ADDI A, #N

Immediate

∆∆

AND A, (X)

Indirect

∆

AND A, (Y)

Indirect

∆

AND A, rr

Direct

∆

ANDI A, #N

Immediate

∆

CLR A

Short Direct

∆∆

CLR rr

Direct

COM A

Inherent

∆∆

CP A, (X)

Indirect

∆∆

CP A, (Y)

Indirect

∆∆

CP A, rr

Direct

∆∆

CPI A, #N

Immediate

∆∆

DEC X

Short Direct

∆

DEC Y

Short Direct

∆

DEC V

Short Direct

∆

DEC W

Short Direct

∆

DEC A

Direct

∆

DEC rr

Direct

∆

DEC (X)

Indirect

∆

DEC (Y)

Indirect

∆

INC X

Short Direct

∆

INC Y

Short Direct

∆

INC V

Short Direct

∆

INC W

Short Direct

∆

INC A

Direct

∆

INC rr

Direct

∆

INC (X)

Indirect

∆

INC (Y)

Indirect

∆

RLC A

Inherent

∆∆

SLA A

Inherent

∆∆

SUB A, (X)

Indirect

∆∆

SUB A, (Y)

Indirect

∆∆

SUB A, rr

Direct

∆∆

SUBI A, #N

Immediate

∆∆

Notes:

X,Y. Indirect Register Pointers, V & W Short Direct Registers

∆. Affected

# . Immediate data (stored in ROM memory)

* . Not Affected

rr.

Data space register

Table 13. Arithmetic & Logic Instructions

ST6369

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