S3C72G9 datasheet(9/96 Pages) SAMSUNG

Part #	S3C72G9

Description	SAM47 INSTRUCTION SET

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Manufacturer	SAMSUNG [Samsung semiconductor]

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Table 5-9. CPU Control Instructions — High-Level Summary

Name

Operand

Operation Description

Bytes

Cycles

SCF

–

Set carry flag to logic one

1

RCF

Reset carry flag to logic zero

1

CCF

Complement carry flag

1

EI

Enable all interrupts

2

DI

Disable all interrupts

2

IDLE

Engage CPU idle mode

2

STOP

Engage CPU stop mode

2

NOP

No operation

1

SMB

n

Select memory bank

2

SRB

n

Select register bank

2

REF

memc

Reference code

1

3

VENTn

EMB (0,1)

ERB (0,1)

ADR

Load enable memory bank flag (EMB) and the enable

register bank flag (ERB) and program counter to vector

address, then branch to the corresponding location

2

Table 5-10. Program Control Instructions — High-Level Summary

Name

Operand

Operation Description

Bytes

Cycles

CPSE

R,#im

Compare and skip if register equals #im

2

2 + S

@HL,#im

Compare and skip if indirect data memory equals #im

2

2 + S

A,R

Compare and skip if A equals R

2

2 + S

A,@HL

Compare and skip if A equals indirect data memory

1

1 + S

EA,@HL

Compare and skip if EA equals indirect data memory

2

2 + S

EA,RR

Compare and skip if EA equals RR

2

2 + S

LJP

ADR

Long jump to direct address (15 bits)

3

JP

ADR

Jump to direct address (14 bits)

3

JPS

ADR

Jump direct in page (12 bits)

2

JR

#im

Jump to immediate address

1

2

@WX

Branch relative to WX register

2

3

@EA

Branch relative to EA

2

3

LCALL

ADR

Long call direct in page (15 bits)

3

4

CALL

ADR

Call direct in page (14 bits)

3

4

CALLS

ADR

Call direct in page (11 bits)

2

3

RET

–

Return from subroutine

1

3

IRET

–

Return from interrupt

1

3

SRET

–

Return from subroutine and skip

1

3 + S

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