s3c72m9 Samsung Semiconductor, Inc., s3c72m9 Datasheet - Page 182

• Manufacturer Part Number: s3c72m9
• Description: The S3c72m5/s3c72m7/s3c72m9 Single-chip Cmos Microcontroller Has Been Designed For High Performance Using Samsung S
• Manufacturer: Samsung Semiconductor, Inc.

SAM47 INSTRUCTION SET
REF —
REF
Examples:
5-78
(Continued)
1. Instructions can be executed efficiently using REF, as shown in the following example:
2. The following example shows how the REF instruction is executed in relation to LD
Reference Instruction
instructions that have a 'redundancy effect':
AAA
BBB
CCC
DDD
AAA
ORG
LD
LD
TCALL SUB1
TJP
•
•
•
ORG
REF
REF
REF
REF
ORG
LD
•
•
•
ORG
LD
REF
•
•
•
REF
LD
SRB
0020H
HL,#00H
EA,#FFH
SUB2
0080H
AAA
BBB
CCC
DDD
0020H
EA,#40H
0100H
EA,#30H
AAA
AAA
EA,#50H
2
; LD
; LD
; CALL
; JP
; Not skipped
; Skipped
S3C72M5/C72M7/C72M9/P72M9 (Preliminary Spec)
HL,#00H
EA,#FFH
SUB1
SUB2