A simple assembly language compiling to brainfuck. Just for fun.
Every instruction takes the form
MNEMONIC{C} Operand1, Operand2
Where
MNEMONIC: the name of the instruction{C}: An optional 'conditional' flag, which indicates that the instruction must only be executed if the last condition operation evaluated to trueOperand1: First operand of the instruction, must always be a register nameOperand2: Second operand of the instruction. Not all instructions have two operands.
The second operand can be:
- A register name. Eg
R1 - A constant value (prefixed by the
#symbol, eg#3) - The memory address stored in a register (register name surrounded by
[], eg[R3])
| Instruction | Description |
|---|---|
MOV Reg, Operand |
Copies Operand to Reg |
ADD Reg, Operand |
Adds Operand to the value contained in Reg, storing the result in Reg |
OUT Reg |
Prints the content of Reg |
| Instruction | Description |
|---|---|
GT Reg, Operand |
Checks if Reg is greater than Operand, storing 1 in CRR if the condition is verified. |
| Instruction | Description |
|---|---|
B Operand |
Jumps to the instruction referenced by Operand. This can either be a constant or a register |
User registers are available for use by the users.
| Register | Description |
|---|---|
CRR |
Condition result register. 1 If the latest contional operation evaluated to true, 0 otherwise. |
PC |
Program Counter, contains the address of the current istruction being executed |
R1 |
General purpose register 1 |
R2 |
General purpose register 2 |
R3 |
General purpose register 3 |
R4 |
General purpose register 4 |
R5 |
General purpose register 5 |
MOV R1, #5 ; Set R1 to 5
loop:
ADD R2, #1 ; Add 1 to R2
GT R1, R2 ; R1 > R2?
BC loop ; If yes, branch to loop
OUT R1 ; Print R1
OUT R2 ; Print R2
++++++
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[-
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>>>>>>>>[-]+<<<<<<<<
>+<[>-]>[>]<
[-
>>>>>>>>>+<<<<<<<<<
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[-
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[-<<[<<->]>[>]<->>]<<[+]<<
[->>>>>+<<<<<]
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