CF98C
Concurrent Funge-98 Compiler - A compiler (written in C) for Concurrent Funge-98
Usage: cf98c [source]
[source]: A file containing a program written in Concurrent Funge-98
Current instruction set
- 0-9 Push this number on the stack
- a-f Push the integer value 10-15, respectively, on the stack
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- Addition: Pop a and b, then push a+b
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- Subtraction: Pop a and b, then push b-a
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- Multiplication: Pop a and b, then push a*b
- / Integer division: Pop a and b, then push b/a, rounded down. If a is zero, ask the user what result they want.
- % Modulo: Pop a and b, then push the remainder of the integer division of b/a. If a is zero, ask the user what result they want.
- ! Logical NOT: Pop a value. If the value is zero, push 1; otherwise, push zero.
- ` Greater than: Pop a and b, then push 1 if b>a, otherwise zero.
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Start moving right
- < Start moving left
- ^ Start moving up
- v Start moving down
- ? Start moving in a random cardinal direction
- _ Pop a value; move right if value=0, left otherwise
- | Pop a value; move down if value=0, up otherwise
- " Start string mode: push each character's ASCII value all the way up to the next "
- : Duplicate value on top of the stack
- \ Swap two values on top of the stack
- $ Pop value from the stack and discard it
- . Pop value and output as an integer
- , Pop value and output as ASCII character
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Trampoline: Skip next cell
- k Pop a value n; perform the next instruction n times
- p A "put" call (a way to store a value for later use). Pop y, x and v, then change the character at the position (x,y) in the program to the character with ASCII value v
- g A "get" call (a way to retrieve data in storage). Pop y and x, then push ASCII value of the character at that position in the program
- & Ask user for a number and push it
- ~ Ask user for a character and push its ASCII value
- @ End program
References
Befunge: http://en.wikipedia.org/wiki/Befunge
Funge-98 final specification http://quadium.net/funge/spec98.html