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Predef::
; Call predefined function a.
; To preserve other registers, have the
; destination call GetPredefRegisters.
; Save the predef id for GetPredefPointer.
ld [wPredefID], a
; A hack for LoadDestinationWarpPosition.
; See LoadTilesetHeader (predef $19).
ld a, [H_LOADEDROMBANK]
ld [wPredefParentBank], a
push af
ld a, BANK(GetPredefPointer)
ld [H_LOADEDROMBANK], a
ld [MBC1RomBank], a
call GetPredefPointer
ld a, [wPredefBank]
ld [H_LOADEDROMBANK], a
ld [MBC1RomBank], a
ld de, .done
push de
jp hl
.done
pop af
ld [H_LOADEDROMBANK], a
ld [MBC1RomBank], a
ret
GetPredefRegisters::
; Restore the contents of register pairs
; when GetPredefPointer was called.
ld a, [wPredefRegisters + 0]
ld h, a
ld a, [wPredefRegisters + 1]
ld l, a
ld a, [wPredefRegisters + 2]
ld d, a
ld a, [wPredefRegisters + 3]
ld e, a
ld a, [wPredefRegisters + 4]
ld b, a
ld a, [wPredefRegisters + 5]
ld c, a
ret
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