8 Bit Compiler

;

Arguments: Comment, Modifies: None

Ignored. Anything following a semicolon is ignored by the compiler.

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@ (Variables)

Arguments: Name, Value, Modifies: None

Compiler directive. Used to reference an address to store a value.

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@ (Functions)

Argument: Name, Modifies: None

Compiler directive. Used to reference an address midway through a program to jump to.

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.value

Argument: Value, Modifies: None

Compiler directive. Typically used to set the starting value of a variable.

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NOP

Argument: None, Modifies: None

No operation. Does nothing, and waits one instruction cycle, typically five clock cycles.

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JMP

Argument: Address, Modifies: Memory

Jump. Jumps to the given address.

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ADD

Argument: Address, Modifies: Memory

Add. Adds the current values of the A register and B register and writes it to the given address.

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SUB

Argument: Address, Modifies: Memory

Subtract. Subtracts the current values of the B register from the A register and writes it to the given address.

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STA

Argument: Address, Modifies: Memory

Store A. Stores the current value of the A register to the given address.

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ATB

Argument: None, Modifies: B Register

A to B. Moves the content of the A register to the B register.

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ADA

Argument: None, Modifies: A Register

Add to A. Adds the current value of the A register to the current value of the B register and stores it to the A register.

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ADB

Argument: None, Modifies: B Register

Add to B. Adds the current value of the A register to the current value of the B register and stores it to the B register.

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LDA

Argument: Address, Modifies: A Register

Load to A. WritesLoads the value at the given address to the the A register.

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LDB

Argument: Address, Modifies: B Register

Load to B. Writes the value at the given address to the the B register.

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LIA

Argument: Value, Modifies: A Register

Load Immediately to A. Loads the given value to the the A register.

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LIB

Argument: Value, Modifies: B Register

Load Immediately to B. Loads the given value to the the B register.

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JZ

Argument: Address, Modifies: None

Jump Zero. Jumps to the given address if the zero flag is set.

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JC

Argument: Address, Modifies: None

Jump Carry. Jumps to the given address if the carry flag is set.

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OUT

Argument: Address, Modifies: Ouput

Output. Writes the value at the given address to the output register.

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HLT

Argument: None, Modifies: None

Halt. Halts the processor and stops all execution.

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