SAM47 INSTRUCTION SET
KS57C2308/P2308/C2316/P2316
5-54
INCS
— Increment and Skip on Carry
INCS
dst
Operation:
Operand
Operation Summary
Bytes
Cycles
R
Increment register (R); skip on carry
1
1 + S
DA
Increment direct data memory; skip on carry
2
2 + S
@HL
Increment indirect data memory; skip on carry
2
2 + S
RRb
Increment register pair (RRb); skip on carry
1
1 + S
Description:
The instruction INCS increments the value of the destination operand by one. An original value
of 0FH will, for example, overflow to 00H. If a carry occurs, the next instruction is skipped. The
carry flag value is unaffected.
Operand
Binary Code
Operation Notation
R
0
1
0
1
1
r2
r1
r0
R
←
R + 1; skip on carry
DA
1
1
0
0
1
0
1
0
DA
←
DA + 1; skip on carry
a7
a6
a5
a4
a3
a2
a1
a0
@HL
1
1
0
1
1
1
0
1
(HL)
←
(HL) + 1; skip on carry
0
1
1
0
0
0
1
0
RRb
1
0
0
0
0
r2
r1
0
RRb
←
RRb + 1; skip on carry
Example:
Register pair HL contains the value 7EH (01111110B). RAM location 7EH contains 0FH. The
instruction sequence
INCS
@HL
; 7EH
←
"0"
INCS
HL
; Skip
INCS
@HL
; 7EH
←
"1"
leaves the register pair HL with the value 7EH and RAM location 7EH with the value 1H. Since a
carry occurred, the second instruction is skipped. The carry flag value remains unchanged.
Summary of Contents for C2316
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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