参数资料
型号: MC68HC05C5CP
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封装: DIP-40
文件页数: 17/58页
文件大小: 166K
代理商: MC68HC05C5CP
Page 18
MOTOROLA
Section 4: CPU Core
MC68HC05C5 Specification Rev. 1.2
4.2.2
READ-MODIFY-WRITE INSTRUCTIONS
These instructions read a memory location or a register, modify or test its contents, and
write the modified value back to memory or to the register. The test for negative or zero
(TST) instruction is an exception to the read-modify-write sequence since it does not
modify the value. Do not use these read-modify-write instructions on write-only locations.
Refer to the following list of instructions.
Function
Mnemonic
Increment
INC
Decrement
DEC
Clear
CLR
Complement
COM
Negate (Twos Complement)
NEG
Rotate Left Through Carry
ROL
Rotate Right Through Carry
ROR
Logical Shift Left
LSL
Logical Shift Right
LSR
Arithmetic Shift Right
ASR
Test for Negative or Zero
TST
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