KS57C2308/P2308/C2316/P2316
SAM47 INSTRUCTION SET
5-43
BXOR
— Bit Exclusive OR
BXOR
C,src.b
Operation:
Operand
Operation Summary
Bytes
Cycles
C,mema.b
Exclusive-OR carry with memory bit
2
2
C,memb.@L
2
2
C,@H+DA.b
2
2
Description:
The specified bit of the source is logically XORed with the carry bit value. The resultant bit is
written to the carry flag. The source value is unaffected.
Operand
Binary Code
Operation Notation
C,mema.b
*
1
1
1
1
0
1
1
1
C
←
C XOR mema.b
C,memb.@L
1
1
1
1
0
1
1
1
C
←
C XOR [memb.7–2 + L.3-2].
[L.1–0]
0
1
0
0
a5
a4
a3
a2
C,@H+DA.b
1
1
1
1
0
1
1
1
C
←
C XOR [H + DA.3–0].b
0
0
b1
b0
a3
a2
a1
a0
Second Byte
Bit Addresses
*
mema.b
1
0
b1
b0
a3
a2
a1
a0
FB0H–FBFH
1
1
b1
b0
a3
a2
a1
a0
FF0H–FFFH
Examples:
1. The carry flag is logically XORed with the P1.0 value:
RCF
; C
←
"0"
BXOR C,P1.0
; If P1.0 = "1", then C
←
"1"; if P1.0 = "0", then C
←
"0"
2. The P1 address is FF1H and register L contains the value 9H (1001B). The address (memb.7–
2) is 111100B and (L.3–2) = 10B. The resulting address is 11110010B or FF2H, specifying P2.
The bit value for the BXOR instruction, (L.1–0) is 01B which specifies bit 1. Therefore, P1.@L
= P2.1:
LD
L,#9H
BXOR C,P1.@L
; P1.@L is specified as P2.1; C XOR P2.1
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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