1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/Makefile	Thu Jan 03 08:20:10 2019 +0200
     1.3 @@ -0,0 +1,18 @@
     1.4 +src = test.asm
     1.5 +obj = test.o
     1.6 +bin = test
     1.7 +img = test.gb
     1.8 +
     1.9 +$(img): $(bin)
    1.10 +	cp $< $@
    1.11 +	rgbfix -v -p 0 $@
    1.12 +
    1.13 +$(bin): $(obj)
    1.14 +	rgblink -o $@ $(obj)
    1.15 +
    1.16 +%.o: %.asm
    1.17 +	rgbasm -o $@ $<
    1.18 +
    1.19 +.PHONY: clean
    1.20 +clean:
    1.21 +	rm -f $(obj) $(bin) $(img)

     2.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     2.2 +++ b/test.asm	Thu Jan 03 08:20:10 2019 +0200
     2.3 @@ -0,0 +1,105 @@
     2.4 +; vi:ft=rgbasm:
     2.5 +REG_LCDC	equ $ff40
     2.6 +REG_STAT	equ $ff41
     2.7 +REG_SCY		equ $ff42
     2.8 +REG_SCX		equ $ff43
     2.9 +REG_LY		equ $ff44
    2.10 +REG_LYC		equ $ff45
    2.11 +REG_BGP		equ $ff47
    2.12 +REG_OBP0	equ $ff48
    2.13 +REG_OBP1	equ $ff49
    2.14 +REG_WY		equ $ff4a
    2.15 +REG_WX		equ $ff4b
    2.16 +
    2.17 +LCDC_BGON	equ $01
    2.18 +LCDC_OBJON	equ $02
    2.19 +LCDC_OBJ16	equ $04
    2.20 +LCDC_BGMAP_9C00	equ $08
    2.21 +LCDC_CHAR_8000	equ $10
    2.22 +LCDC_WON	equ $20
    2.23 +LCDC_WMAP_9C00	equ $40
    2.24 +LCDC_DISPON	equ $80
    2.25 +
    2.26 +section "hdr", ROM0[$100]
    2.27 +	nop
    2.28 +	jp main
    2.29 +
    2.30 +rept $150 - $104
    2.31 +	db 0
    2.32 +endr
    2.33 +
    2.34 +section "text", ROM0
    2.35 +	
    2.36 +main:
    2.37 +	ldh a, [REG_LY]
    2.38 +	cp a, 144
    2.39 +	jr c, main
    2.40 +
    2.41 +	; disable the display
    2.42 +	xor a, a
    2.43 +	ldh [REG_LCDC], a
    2.44 +
    2.45 +	ld hl, $8000	; point hl to character data area (tiles)
    2.46 +	ld de, tile0
    2.47 +	ld c, tiles_end - tile0
    2.48 +.copytile:
    2.49 +	ld a, [de]
    2.50 +	ld [hl+], a
    2.51 +	inc de
    2.52 +	dec c
    2.53 +	jr nz, .copytile
    2.54 +
    2.55 +	ld hl, $9800	; point hl to BG vram
    2.56 +	ld b, 18
    2.57 +.fillscr:
    2.58 +	ld c, 32
    2.59 +.fillrow:
    2.60 +	ld a, b
    2.61 +	add a, c
    2.62 +	and a, 1
    2.63 +
    2.64 +	ld [hl+], a
    2.65 +	dec c
    2.66 +	jr nz, .fillrow
    2.67 +
    2.68 +	dec b
    2.69 +	jr nz, .fillscr
    2.70 +
    2.71 +	; setup identity palette
    2.72 +	ld a, $e4  ; 0:00 1:01 2:10 3:11
    2.73 +	ldh [REG_BGP], a
    2.74 +
    2.75 +	; reset scroll to 0
    2.76 +	xor a, a
    2.77 +	ldh [REG_SCY], a
    2.78 +	ldh [REG_SCX], a
    2.79 +
    2.80 +	; setup the LCDC and enable the display
    2.81 +	ld a, LCDC_DISPON | LCDC_CHAR_8000 | LCDC_BGON
    2.82 +	ldh [REG_LCDC], a
    2.83 +
    2.84 +	di
    2.85 +.end:	halt
    2.86 +	nop
    2.87 +	jp .end
    2.88 +
    2.89 +section "data", ROM0
    2.90 +
    2.91 +	; lower bit,upper bit, for each row of 8 pixels
    2.92 +tile0: db $55,$00
    2.93 +	db $aa,$00
    2.94 +	db $55,$00
    2.95 +	db $aa,$00
    2.96 +	db $55,$00
    2.97 +	db $aa,$00
    2.98 +	db $55,$00
    2.99 +	db $aa,$00
   2.100 +tile1: db $ff,$aa
   2.101 +	db $ff,$55
   2.102 +	db $ff,$aa
   2.103 +	db $ff,$55
   2.104 +	db $ff,$aa
   2.105 +	db $ff,$55
   2.106 +	db $ff,$aa
   2.107 +	db $ff,$55
   2.108 +tiles_end: