An article on 51 single-chip study notes - based assembly language (1)
HH rookie again this update on a hardware architecture is all about, I believe we should have seen it in other places, if not read suggestions eight children went to look at the materials, but do not see it does not matter, we used to say.
This pacemaker 51 computers began to talk about the main assembly instructions, we need the environment Keil, version does not matter, almost, as to how keil construction bloggers do not speak, that we can own Baidu
1. assembler instruction
1.1 instruction format
[Label:] opcode [Operand 1], [operand 2], [3 Operand]; NOTE
entire statement must be written on one line
Instruction address character: (1) reference
(2) Operation Code: indicates the operation function of the instruction
(2) the number of operations: to participate in the operation of the data or address
(4) Note: Instruction Description Function
1.2 Instruction classification
1Byte：Opcode
2Replacement:Opcode Addressing data or
3Byte:Opcode Addressing data or Addressing data or
1.3 Operand Type
(1) Immediate
(2) register operand
(3) Memory operand
1.4 instruction of common symbols
1.5 instruction of common symbols
1.6 Addressing
2. Instruction
2.1 Load Instructions
2.2 arithmetic type instructions
2.3 logical operation and shift instructions
2.4-oriented instructions
Control transfer instruction class 2.5
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