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SwapTextboxPalettes:: ; 4c000
hlcoord 0, 0
decoord 0, 0, AttrMap
ld b, SCREEN_HEIGHT
.loop
push bc
ld c, SCREEN_WIDTH
.innerloop
ld a, [hl]
push hl
srl a
jr c, .UpperNybble
ld hl, TilesetPalettes
add [hl]
ld l, a
ld a, [TilesetPalettes + 1]
adc $0
ld h, a
ld a, [hl]
and $f
jr .next
.UpperNybble:
ld hl, TilesetPalettes
add [hl]
ld l, a
ld a, [TilesetPalettes + 1]
adc $0
ld h, a
ld a, [hl]
swap a
and $f
.next
pop hl
ld [de], a
res 7, [hl]
inc hl
inc de
dec c
jr nz, .innerloop
pop bc
dec b
jr nz, .loop
ret
ScrollBGMapPalettes:: ; 4c03f
ld hl, BGMapBuffer
ld de, BGMapPalBuffer
.loop
ld a, [hl]
push hl
srl a
jr c, .UpperNybble
; .LowerNybble
ld hl, TilesetPalettes
add [hl]
ld l, a
ld a, [TilesetPalettes + 1]
adc $0
ld h, a
ld a, [hl]
and $f
jr .next
.UpperNybble:
ld hl, TilesetPalettes
add [hl]
ld l, a
ld a, [TilesetPalettes + 1]
adc $0
ld h, a
ld a, [hl]
swap a
and $f
.next
pop hl
ld [de], a
res 7, [hl]
inc hl
inc de
dec c
jr nz, .loop
ret
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