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HD6433802H Datasheet, PDF (47/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer | |||
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2.5.3 Logic Operations
Table 2.6 describes the four instructions that perform logic operations.
Table 2.6 Logic Operation Instructions
Instruction
Size*
Function
AND
B
Rd ⧠Rs â Rd, Rd ⧠#IMM â Rd
Performs a logical AND operation on a general register and
another general register or immediate data
OR
B
Rd ⨠Rs â Rd, Rd ⨠#IMM â Rd
Performs a logical OR operation on a general register and another
general register or immediate data
XOR
B
Rd â Rs â Rd, Rd â #IMM â Rd
Performs a logical exclusive OR operation on a general register
and another general register or immediate data
NOT
B
~ Rd â Rd
Obtains the oneâs complement (logical complement) of general
register contents
Notes: * Size: Operand size
B: Byte
2.5.4 Shift Operations
Table 2.7 describes the eight shift instructions.
Table 2.7 Shift Instructions
Instruction
Size*
Function
SHAL
B
Rd shift â Rd
SHAR
Performs an arithmetic shift operation on general register contents
SHLL
SHLR
B
Rd shift â Rd
Performs a logical shift operation on general register contents
ROTL
B
Rd rotate â Rd
ROTR
Rotates general register contents
ROTXL
B
ROTXR
Rd rotate through carry â Rd
Rotates general register contents through the C (carry) bit
Notes: * Size: Operand size
B: Byte
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