libgambatte: add/test dmg oam writable at mode=2/mode=3 boundary

This is apparently different on the DMG.
Fixes mooneye-gb "lcdon_write_timing-GS" in "DMG" mode.

libgambatte/src/video.cpp

@@ -419,7 +419,8 @@ bool LCD::oamWritable(unsigned long const cc) {
 	if (ppu_.lyCounter().lineCycles(cc) + 3 + ppu_.cgb() >= lcd_cycles_per_line)
 		return ppu_.lyCounter().ly() >= lcd_vres - 1 && ppu_.lyCounter().ly() < lcd_lines_per_frame - 1;
 
-	return ppu_.lyCounter().ly() >= lcd_vres || cc + 2 >= m0TimeOfCurrentLine(cc);
+	return ppu_.lyCounter().ly() >= lcd_vres || cc + 2 >= m0TimeOfCurrentLine(cc)
+		|| (ppu_.lyCounter().lineCycles(cc) == 76 && !ppu_.cgb());
 }
 
 void LCD::mode3CyclesChange() {

test/hwtests/oam_access/midread_1_dmg08_cgb04c_out3.asm

@@ -0,0 +1,104 @@
+.size 8000
+
+.text@48
+	jp lstatint
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	ld b, 98
+	call lwaitly_b
+	xor a, a
+	ld(fe00), a
+	ld a, 01
+	ldff(45), a
+	ld a, 40
+	ldff(41), a
+	ld a, 02
+	ldff(ff), a
+	xor a, a
+	ldff(0f), a
+	ei
+
+.text@1000
+lstatint:
+
+.text@1006
+	ld a, (fe00)
+	and a, 03
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	pop af
+	ld(9800), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, a0
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+

test/hwtests/oam_access/midread_2_dmg08_cgb04c_out3.asm

@@ -0,0 +1,104 @@
+.size 8000
+
+.text@48
+	jp lstatint
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	ld b, 98
+	call lwaitly_b
+	xor a, a
+	ld(fe00), a
+	ld a, 01
+	ldff(45), a
+	ld a, 40
+	ldff(41), a
+	ld a, 02
+	ldff(ff), a
+	xor a, a
+	ldff(0f), a
+	ei
+
+.text@1000
+lstatint:
+
+.text@1007
+	ld a, (fe00)
+	and a, 03
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	pop af
+	ld(9800), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, a0
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+

test/hwtests/oam_access/midread_3_dmg08_cgb04c_out3.asm

@@ -0,0 +1,104 @@
+.size 8000
+
+.text@48
+	jp lstatint
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	ld b, 98
+	call lwaitly_b
+	xor a, a
+	ld(fe00), a
+	ld a, 01
+	ldff(45), a
+	ld a, 40
+	ldff(41), a
+	ld a, 02
+	ldff(ff), a
+	xor a, a
+	ldff(0f), a
+	ei
+
+.text@1000
+lstatint:
+
+.text@1008
+	ld a, (fe00)
+	and a, 03
+	jp lprint_a
+
+.text@7000
+lprint_a:
+	push af
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	pop af
+	ld(9800), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, a0
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+

test/hwtests/oam_access/midwrite_1_dmg08_cgb04c_out0.asm

@@ -0,0 +1,103 @@
+.size 8000
+
+.text@48
+	jp lstatint
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	ld b, 98
+	call lwaitly_b
+	xor a, a
+	ld(fe00), a
+	ld a, 01
+	ldff(45), a
+	ld a, 40
+	ldff(41), a
+	ld a, 02
+	ldff(ff), a
+	xor a, a
+	ldff(0f), a
+	ei
+
+.text@1000
+lstatint:
+
+.text@1004
+	ld a, 01
+	ld (fe00), a
+	jp lprint_fe00
+
+.text@7000
+lprint_fe00:
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld a, (fe00)
+	ld(9800), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, a0
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+

test/hwtests/oam_access/midwrite_2_dmg08_out1_cgb04c_out0.asm

@@ -0,0 +1,103 @@
+.size 8000
+
+.text@48
+	jp lstatint
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	ld b, 98
+	call lwaitly_b
+	xor a, a
+	ld(fe00), a
+	ld a, 01
+	ldff(45), a
+	ld a, 40
+	ldff(41), a
+	ld a, 02
+	ldff(ff), a
+	xor a, a
+	ldff(0f), a
+	ei
+
+.text@1000
+lstatint:
+
+.text@1005
+	ld a, 01
+	ld (fe00), a
+	jp lprint_fe00
+
+.text@7000
+lprint_fe00:
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld a, (fe00)
+	ld(9800), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, a0
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+

test/hwtests/oam_access/midwrite_3_dmg08_cgb04c_out0.asm

@@ -0,0 +1,103 @@
+.size 8000
+
+.text@48
+	jp lstatint
+
+.text@100
+	jp lbegin
+
+.data@143
+	80
+
+.text@150
+lbegin:
+	ld b, 98
+	call lwaitly_b
+	xor a, a
+	ld(fe00), a
+	ld a, 01
+	ldff(45), a
+	ld a, 40
+	ldff(41), a
+	ld a, 02
+	ldff(ff), a
+	xor a, a
+	ldff(0f), a
+	ei
+
+.text@1000
+lstatint:
+
+.text@1006
+	ld a, 01
+	ld (fe00), a
+	jp lprint_fe00
+
+.text@7000
+lprint_fe00:
+	ld b, 91
+	call lwaitly_b
+	xor a, a
+	ldff(40), a
+	ld a, (fe00)
+	ld(9800), a
+	ld bc, 7a00
+	ld hl, 8000
+	ld d, a0
+lprint_copytiles:
+	ld a, (bc)
+	inc bc
+	ld(hl++), a
+	dec d
+	jrnz lprint_copytiles
+	ld a, c0
+	ldff(47), a
+	ld a, 80
+	ldff(68), a
+	ld a, ff
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	ldff(69), a
+	xor a, a
+	ldff(69), a
+	ldff(69), a
+	ldff(43), a
+	ld a, 91
+	ldff(40), a
+lprint_limbo:
+	jr lprint_limbo
+
+.text@7400
+lwaitly_b:
+	ld c, 44
+lwaitly_b_loop:
+	ldff a, (c)
+	cmp a, b
+	jrnz lwaitly_b_loop
+	ret
+
+.data@7a00
+	00 00 7f 7f 41 41 41 41
+	41 41 41 41 41 41 7f 7f
+	00 00 08 08 08 08 08 08
+	08 08 08 08 08 08 08 08
+	00 00 7f 7f 01 01 01 01
+	7f 7f 40 40 40 40 7f 7f
+	00 00 7f 7f 01 01 01 01
+	3f 3f 01 01 01 01 7f 7f
+	00 00 41 41 41 41 41 41
+	7f 7f 01 01 01 01 01 01
+	00 00 7f 7f 40 40 40 40
+	7e 7e 01 01 01 01 7e 7e
+	00 00 7f 7f 40 40 40 40
+	7f 7f 41 41 41 41 7f 7f
+	00 00 7f 7f 01 01 02 02
+	04 04 08 08 10 10 10 10
+	00 00 3e 3e 41 41 41 41
+	3e 3e 41 41 41 41 3e 3e
+	00 00 7f 7f 41 41 41 41
+	7f 7f 01 01 01 01 7f 7f
+