Brainfunk

Overview

Brainfunk is derivative of Brainfuck language with aims to:

• Unify cell pointer and cell value increment and decrement operations to single + and - operations. Remove > and < operations.
• Introduce fast copy instruction usable between all address spaces.
• Allow macro definition for custom symbol definition and code reduction
• Allow to read/write program space
• Support multiple I/O ports for additional hardware addressing
• Enable brainfuck compatible mode
• Allow absolute integer constants

Commands

Command	Description
^	Increment selected object
<	Decrement selected object
(	Jump past the matching ) if the object value is zero
)	Jump back to the matching ( if the object value is nonzero
_	No operation, clear object selection index
$	Increment object selection index
~	Copy value from previous selected object to current selected object
:	Start macro, first symbol to the right is new defined symbol
;	End macro started by :

Object table

Index	Description
0	A - Accumulator
1	DP - Data pointer
2	(DP) - Data value
3	IP - Interface pointer
4	(IP) - Interface value
5	PC - Program counter
6	PP - Program pointer
7	(PP) - Program value
8	SP - Stack pointer
9	(SP) - Stack value

Port address table

Address	Description
0	Null
1	Standard input
2	Standard output
3	Delay [ms]
4	Sound [Hz]

Macros

Brainfuck	Brainfunk
+
<	Decrement selected object
(	Jump past the matching ) if the object value is zero
)	Jump back to the matching ( if the object value is nonzero
_	No operation, clear object selection index
$	Increment object selection index
~	Copy value from previous selected object to current selected object
:	Start macro, first symbol to the right is new defined symbol
;	End macro started by :

Brainfuck comparison

Description	Brainfuck	Brainfunk
Increment value	+	#+
Decrement value	-	#-
Move the pointer to the right	<	&+
Move the pointer to the left	>	&-
Write cell to output	.	#$%
Read input to cell	,	$#%
Skip loop if cell is zero	[	[
Loop back if cell is nonzero	]	]
Cat	,[.,]	$#%[$%#%]
Clear value	[-]	#[-]
Move value	>[-]<[->+<]	&+#[-]&-#[-&+#+&-#]
Copy value	>[-]>[-]<<[->+>+<<]>>[-<<+>>]	#@%&+@#%
Swap value	>[-]<<[->>+<<]>[-<+>]>[-<+>]	#@%&++@#%&-#@%&-@#%&++#@%&-@#%