Freescale Semiconductor, Inc.
GENERAL RELEASE SPECIFICATION
11.2 Instruction Types
The MCU instructions fall into the following five categories:
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•
•
•
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Register/Memory Instructions
Read-Modify-Write Instructions
Jump/Branch Instructions
Bit Manipulation Instructions
Control Instructions
11.2.1 Register/Memory Instructions
Most of these instructions use two operands. One operand is in either the
accumulator or the index register. The CPU finds the other operand in memory.
Table 11-1 lists the register/memory instructions.
Table 11-1. Register/Memory Instructions
Instruction
Add Memory Byte and Carry Bit to Accumulator
Add Memory Byte to Accumulator
AND Memory Byte with Accumulator
Bit Test Accumulator
Mnemonic
ADC
ADD
AND
BIT
Compare Accumulator
CMP
CPX
EOR
LDA
Compare Index Register with Memory Byte
EXCLUSIVE OR Accumulator with Memory Byte
Load Accumulator with Memory Byte
Load Index Register with Memory Byte
Multiply
LDX
MUL
ORA
SBC
STA
OR Accumulator with Memory Byte
Subtract Memory Byte and Carry Bit from Accumulator
Store Accumulator in Memory
Store Index Register in Memory
STX
Subtract Memory Byte from Accumulator
SUB
INSTRUCTION SET
MC68HC05P4A
Rev. 2.0
11-4
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