; source IL file
    ; these are comments

output prg, basic  ; create a c-64 program with basic SYS call to launch it
zp clobber,restore  ; clobber over the zp memory normally used by basic/kernel rom, frees up more zp

~main
{
	memory borderb1 = $d020
	memory .byte borderb2 = $d020
	memory .word screencolors = $d020
	memory .array($10) screenblock1 = $0400      ; 10 bytes
	memory .array($0100) screenblock2 = $0500    ; 256 bytes
	memory .array($0234) screenblock3 = $2000    ; some weird size
	memory .wordarray($20) screenblock4 = $0600      ; 32 words
	memory .matrix(40,25) charscreen = $0400
	var .array($10) var1  = $aa
	var .wordarray($10) var2  = $9988
	var .array($10) var3  = $11
	var var4
	var .matrix(40,25) vcharscreen      ; init with 0
	var .matrix(40,25) vcharscreen2 = 111   ; init with 111

start
	; set some colors
	Y = 0
	borderb1 = Y
	X=Y=A = 0
	X = 1
	screencolors = X
	borderb1 = 0
	borderb2 = 1
	screencolors = $0
	screencolors = $0207

	; fill block of memory with a single value (byte or word)
	;screenblock1,* = A
	;screenblock1,* = X
	;screenblock1,* = Y
	;screenblock1,* = 2
	;screenblock1,* = $aaa
	;screenblock2,* = A
	;screenblock2,* = X
	;screenblock2,* = Y
	;screenblock2,* = 2
	;screenblock2,* = $aaa
	;screenblock3,* = A
	;screenblock3,* = X
	;screenblock3,* = Y
	;screenblock3,* = 2
	;screenblock3,* = $aaa
	;screenblock4,* = A
	;screenblock4,* = X
	;screenblock4,* = Y
	;screenblock4,* = 2
	;screenblock4,* = $aaa

	; swap bytes
	;A = var1[0]
	;X = var1[1]
	;var1[0] = X
	;var1[1] = A

	; swap words
	;A = var2[0]     ; must crash, cannot put word in register
	;X = var2[1]     ;crash
	;var2[0] = X     ; ok, 00-padded
	;var2[1] = A     ; ok, 00-padded

	return
}