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Created Instruction Set (markdown)

Simon Fortier 2017-11-11 10:54:09 -05:00
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# Instruction set
### Instruction table with affected flags
| Instruction mnemonic | Operands | Opcode | `C Z S O B` |
| -------------------- |:-------- |:------:|:--------- |
| **ADD** *destination*, *source* | *mem/reg*, *mem/reg/imm* | 0x02 | `X X X X -` |
| **AND** *destination*, *source* | *mem/reg*, *mem/reg/imm* | 0x04 | `0 X X 0 -` |
| **BRK** | *None* | 0x00 |`- - - - 1` |
| **CALL** *target* | *mem/reg/imm* | 0x04 |`- - - - -` |
| **CMP** *destination*, *source* | *mem/reg*, *mem/reg/imm* | 0x0C |`X X X X -` |
| **DIV** *source* | *mem/reg/imm* | 0x18 |`- - - - -` |
| **HWI** *source* | *mem/reg/imm* | 0x09 |`- - - - -` |
| **HWQ** *source* | *mem/reg/imm* | 0x1C |`- - - - -` |
| **JG** *target* | *mem/reg/imm* | 0x0F |`- - - - -` |
| **JGE** *target* | *mem/reg/imm* | 0x10 |`- - - - -` |
| **JL** *target* | *mem/reg/imm* | 0x11 |`- - - - -` |
| **JLE** *target* | *mem/reg/imm* | 0x12 |`- - - - -` |
| **JNS** *target* | *mem/reg/imm* | 0x1B |`- - - - -` |
| **JNZ** *target* | *mem/reg/imm* | 0x0D |`- - - - -` |
| **JZ** *target* | *mem/reg/imm* | 0x0E |`- - - - -` |
| **MOV** *destination*, *source* | *mem/reg*, *mem/reg/imm* |0x01 |`- - - - -` |
| **MUL** *source* | *mem/reg/imm* | 0x17 |`X - - X -` |
| **NEG** *destination* | *mem/reg* | 0x19 |`1 X X X -`* |
| **NOP** | *None* | 0x3F |`- - - - -` |
| **NOT** *destination* | *mem/reg* | TODO |`- - - - -` |
| **OR** *destination*, *source* | *mem/reg*, *mem/reg/imm* | 0x05 |`0 X X 0 -` |
| **POP** *destination* | *mem/reg* | 0x14 |`- - - - -` |
| **PUSH** *source* | *mem/reg/imm* | 0x13 |`- - - - -` |
| **RET** *optional-pop-value* | *imm/None* | 0x16 |`- - - - -` |
| **SHL** *destination*, *count* | *mem/reg*, *mem/reg/imm* | 0x06 |`X - - X -` |
| **SHR** *destination*, *count* | *mem/reg*, *mem/reg/imm* | 0x07 |`X - - X -` |
| **SUB** *destination*, *source* | *mem/reg*, *mem/reg/imm* | 0x03 |`X X X X -` |
| **TEST** *destination*, *source* | *mem/reg*, *mem/reg/imm* | 0x0B |`0 X X 0 -` |
| **XOR** *destination*, *source* | *mem/reg*, *mem/reg/imm* | 0x05 |`0 X X 0 -` |
*NEG instruction: CF is set to 0 if destination=0
### Instruction encoding
WIP