SAM47 INSTRUCTION SET
KS57C2308/P2308/C2316/P2316
5-76
REF
— Reference Instruction
REF
(Continued)
Examples:
1. Instructions can be executed efficiently using REF, as shown in the following example:
ORG
0020H
AAA
LD
HL,#00H
BBB
LD
EA,#FFH
CCC
TCALL
SUB1
DDD
TJP
SUB2
•
•
•
ORG 0080H
REF
AAA
; LD
HL,#00H
REF
BBB
; LD
EA,#FFH
REF
CCC
; CALL
SUB1
REF
DDD
; JP
SUB2
2. The following example shows how the REF instruction is executed in relation to LD
instructions that have a “redundancy effect”:
ORG
0020H
AAA
LD
EA,#40H
•
•
•
ORG
0100H
LD
EA,#30H
REF
AAA
; Not skipped
•
•
•
REF
AAA
LD
EA,#50H
; Skipped
SRB
2
Summary of Contents for KS57C2308
Page 30: ...ADDRESS SPACES KS57C2308 P2308 C2316 P2316 2 22 NOTES ...
Page 168: ...SAM47 INSTRUCTION SET KS57C2308 P2308 C2316 P2316 5 94 NOTES ...
Page 170: ......
Page 206: ...POWER DOWN KS57C2308 P2308 C2316 P2316 8 8 NOTES ...
Page 210: ...RESET KS57C2308 P2308 C2316 P2316 9 4 NOTES ...
Page 222: ...I O PORTS KS57C2308 P2308 C2316 P2316 10 12 NOTES ...
Page 272: ...LCD CONTROLLER DRIVER KS57C2308 P2308 C2316 P2316 12 24 NOTES ...
Page 280: ...SERIAL I O INTERFACE KS57C2308 P2308 C2316 P2316 13 8 NOTES ...
Page 294: ...MECHANICAL DATA KS57C2308 P2308 C2316 P2316 15 2 NOTES ...
Page 310: ...KS57P2308 P2316 OTP KS57C2308 P2308 C2316 P2316 16 16 NOTES ...
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