prog8/testvm.txt

; source code for a tinyvm program
%block   b1
%vardefs
var     byte   teller       0
var     byte  numbertoprint  0
const   byte    one     1
const   byte    thousand  1000
const   byte   space_chr   10
const   word  screenstart 1024
%end_vardefs

%instructions
back:
	push teller
	push one
	add
	dup
	dup
	dup
	push screenstart
	swap
	syscall memwrite_word
	pop teller
	call  1  printnumber
	syscall delay
	push  thousand
	cmp_lt
	jump_if_true back
	return 0
printnumber:
	syscall decimalstr_signed
	syscall printstr
	push space_chr
	syscall printchr
	return 0
%end_instructions

%subblocks
%end_subblocks
%end_block ;b1