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FarCopyData::
; Copy bc bytes from a:hl to de.
ld [wFarCopyDataSavedROMBank], a
ldh a, [hLoadedROMBank]
push af
ld a, [wFarCopyDataSavedROMBank]
call BankswitchCommon
call CopyData
pop af
call BankswitchCommon
ret
CopyData::
; Copy bc bytes from hl to de.
ld a, b
and a
jr z, .copybytes
ld a, c
and a ; is lower byte 0
jr z, .loop
inc b ; if not, increment b as there are <$100 bytes to copy
.loop
call .copybytes
dec b
jr nz, .loop
ret
.copybytes
ld a, [hli]
ld [de], a
inc de
dec c
jr nz, .copybytes
ret
CopyVideoDataAlternate::
ldh a, [rLCDC]
bit 7, a ; LCD enabled?
jp nz, CopyVideoData ; if yes, then copy video data
push hl
ld h, d
ld l, e
pop de
ld a, b ; save bank
push af
swap c
ld a, $f
and c
ld b, a
ld a, $f0
and c
ld c, a
pop af
jp FarCopyData
CopyVideoDataDoubleAlternate::
ldh a, [rLCDC]
bit 7, a ; LCD enabled?
jp nz, CopyVideoDataDouble ; if yes, then copy video data
push de
ld d, h
ld e, l
ld a, b
push af ; save bank to switch to
ld h, $0
ld l, c
add hl, hl ; get raw length of bytes to copy
add hl, hl
add hl, hl
ld b, h
ld c, l
pop af
pop hl
jp FarCopyDataDouble
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