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BAND (Bit AND)
<Operation>
C ∧ (<Bit No.> of <EAd>) → C
<Assembly-Language Format>
BAND #xx:3, <EAd>
<Examples>
BAND #0, R1L
BAND #4, @R3
BAND #7, @H'FFE0:8
<Operand Size>
Byte
<Description>
This instruction ANDs a specified bit with the carry flag and places the result in the carry flag.
The specified bit can be located in a general register or memory. The bit number is specified
by 3-bit immediate data. The operation is shown schematically below.
→
<EAd>*
Byte data in register or memory
The value of the specified bit is not changed.
<Instruction Formats>
Addressing
mode
Register direct
Register indirect
Absolute address
* Register direct, register indirect, or absolute addressing.
Bit No.
Mnem.
Operands
BAND
#xx:3, Rd
BAND
#xx:3,@Rd
BAND
#xx:3,@aa:8
<Condition Code>
I
— — — — — — —
I: Previous value remains unchanged.
H: Previous value remains unchanged.
N: Previous value remains unchanged.
Z: Previous value remains unchanged.
V: Previous value remains unchanged.
C: ANDed with the specified bit.
#xx:3
7
∧
C
Instruction code
1st byte
2nd byte
0 IMM rd
7
6
0 rd
0
7
C
7
E
abs
43
H
N
Z
0
C
3rd byte
4th byte
0 IMM 0
7
6
7
6
0 IMM 0
BAND
V
C
No. of
states
2
6
6
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