Constructor
new BFCpu(nbits, program, memorySize, inputCharCodes)
The constructor for the BF CPU
Parameters:
| Name | Type | Default | Description |
|---|---|---|---|
nbits |
Number | 8 | The number of bits the architecture supports. Must be on of [8, 16, 32] |
program |
BFProgram | The program to execute | |
memorySize |
Number | The size of the allocated memory at start up | |
inputCharCodes |
Array.<Number> | The ASCII char codes of the input string |
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- See:
-
- Program
- Instruction
Methods
execute()
Execute the entire program until the instruction pointer reaches the end
of the file.
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getCurrentCell() → {Number}
Gets the current data cell value.
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Returns:
- The current cell value
- Type
- Number
getDataPtr() → {Number}
Get the current location of the data pointer.
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Returns:
- The data pointer location.
- Type
- Number
getNextInput() → {Number}
Get the next input from the input buffer. Returns zero at the end of the
array if it is not Null terminated.
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Returns:
- The ASCII char code
- Type
- Number
reset()
Resets the CPU architecture: clears the output, zeros memory, moves data
pointer to the start, moves instruction pointer to the start, zeros the
execute counter.
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setCurrentCell(value)
Set the current data cell to a new value.
Parameters:
| Name | Type | Description |
|---|---|---|
value |
Number | The new cell value |
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setDataPtr(value)
Set the data pointer to a new value
Parameters:
| Name | Type | Description |
|---|---|---|
value |
Number | The new data pointer location. |
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setDataPtrWrapMode(mode)
Sets the data pointer mode to either wrap around or throw an error on
overflow and underflow.
Parameters:
| Name | Type | Description |
|---|---|---|
mode |
Boolean | True if wrap |
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setInstructionPtr(value)
Set the instruction pointer to a new location
Parameters:
| Name | Type | Description |
|---|---|---|
value |
Number | The new instruction location |
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step()
Execute one instruction and increment the instruction pointer.
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