pokecrystal-board/home/farcall.asm
2015-02-10 15:14:41 -08:00

56 lines
734 B
NASM

FarCall_de:: ; 2d54
; Call a:de.
; Preserves other registers.
ld [hBuffer], a
ld a, [hROMBank]
push af
ld a, [hBuffer]
rst Bankswitch
call .de
jr ReturnFarCall
.de
push de
ret
; 2d63
FarCall_hl:: ; 2d63
; Call a:hl.
; Preserves other registers.
ld [hBuffer], a
ld a, [hROMBank]
push af
ld a, [hBuffer]
rst Bankswitch
call Function2d82
; 2d6e
ReturnFarCall:: ; 2d6e
; We want to retain the contents of f.
; To do this, we can pop to bc instead of af.
ld a, b
ld [PredefAddress + 2], a
ld a, c
ld [PredefAddress + 3], a
; Restore the working bank.
pop bc
ld a, b
rst Bankswitch
ld a, [PredefAddress + 2]
ld b, a
ld a, [PredefAddress + 3]
ld c, a
ret
; 2d82
Function2d82:: ; 2d82
jp [hl]
; 2d83