SWIT3

Simple, small, somewhat fast, FORTH inspired programming language.

Very early WIP.

• only three first characters of word are parsed (login, logic, and log are equal)
• stack based
• code is case insensitive

What	Words	Example	Stack before	Stack after
COMMENT	( )	( comment )	-	-
LITERAL	#	#1	-	value
PRINT	.	#1 .	value	-
UNSIGNED PRINT	.	#1 u.	value	-
HEX PRINT	.	#1 h.	value	-
BINARY PRINT	.	#1 b.	value	-
FLOAT PRINT	.	#1 f> f.	value	-
IF	? " ;	condition ? if true : if false ;	condition	-
FOR	FOR ;	counter FOR ... ;	loop-counter	-
CASE	?: : ; ;:	var ?: test1 : if var = test1 ; ... ;:	test-variable	-
SWAP	swp	#1 #2 swp	a b	b a
DUPLICATE	dup	#1 dup	a	a a
OVER	ovr	#1 #2 ovr	a b	a b a
ROTATE	rot	#1 #2 #3 rot	a b c	b c a
SET	set	#3 #0 set	value address	-
GET	get	#0 get	address	value
FUNCTION	: ;	: function-name ... ;	-	-

What	Where	Description (a is value on top of stack)
var	-
drop	-	Discard top value from stack
ms	-	Wait for a ms
nl	-	Prints newline (\n)
."	-	Prints everything until "
d:	CASE	Default case
s.	-	Print stack
sf.	-	Print stack as floats
+ - / * ~ neg abs	-	Math functions
f+ f- f/ f*	-	Float math functions
f> f<	-	Convert to and from float
> < >= <= <> ==	-	Comparision function
>> << | &	-	Bitwise functions
`		&&`
inf	-	Loop back to beginning
pc	-	Pushes current program counter on stack
go	-	Sets program counter to value a