AND loc16,#16bitSigned
6-50
AND loc16,#16bitSigned Bitwise AND
SYNTAX OPTIONS OPCODE OBJMODE RPT CYC
AND loc16,#16bitSigned 0001 1000 LLLL LLLL
CCCC CCCC CCCC CCCC
X − 1
Operands loc16 Addressing mode (see Chapter 5)
#16bitSigned 16-bit signed immediate constant value
Description Perform a bitwise AND operation on the 16-bit content of the location
pointed to by the “loc16” addressing mode and the specified 16-bit
immediate constant. The result is stored in the location pointed to by
“loc16”:
[loc16] = [loc16] AND 16bit;
Smart Encoding:
If loc16 = AH or AL and #16bitSigned is an 8-bit number, then the
assembler will encode this instruction as ANDB AX, #8-bit to improve
efficiency. To override this, use the ANDW AX, #16bitSigned
instruction alias.
Flags and
Modes
N
After the operation if bit 15 of [loc16] 1, set N; otherwise, clear N.
Z
After the operation if [loc16] is zero, set Z; otherwise, clear Z.
Repeat This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only
once.
Example
; Clear Bits 3 and 11 of VarA:
; VarA = VarA AND #~(1 << 3 | 1 << 11)
AND @VarA,#~(1 << 3 | 1 << 11)
; Clear bits 3 and 11 of VarA
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