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; loads the deck id in a from DeckPointers and copies it to wPlayerDeck or to
; wOpponentDeck, depending on whose turn it is.
; sets carry flag if an invalid deck id is used.
LoadDeck:
push hl
ld l, a
ld h, $0
ldh a, [hBankROM]
push af
ld a, BANK(DeckPointers)
call BankswitchROM
add hl, hl
ld de, DeckPointers
add hl, de
ld e, [hl]
inc hl
ld d, [hl]
ld a, d
or e
jr z, .null_pointer
call CopyDeckData
pop af
call BankswitchROM
pop hl
or a
ret
.null_pointer
pop af
call BankswitchROM
pop hl
scf
ret
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