ref: eb5a7afe2b4baef9b2f8ad1d3979aaccbe65aab1
dir: /home/copy.asm/
; Functions to copy data from ROM. Functiondc9: ; dc9 ld a, [rLCDC] bit 7, a jp z, Copy2bpp ld a, [hROMBank] push af ld a, BANK(Function104284) rst Bankswitch call Function104284 pop af rst Bankswitch ret ; ddc Functionddc: ; ddc ld a, [rLCDC] bit 7, a jp z, Copy1bpp ld a, [hROMBank] push af ld a, BANK(Function1042b2) rst Bankswitch call Function1042b2 pop af rst Bankswitch ret ; def Functiondef: ; def ld [hBuffer], a ld a, [hROMBank] push af ld a, [hBuffer] rst Bankswitch call FarCopyBytesDouble pop af rst Bankswitch ret ; dfd Functiondfd: ; dfd dec c ld a, [hBGMapMode] push af xor a ld [hBGMapMode], a ld a, [hROMBank] push af ld a, b rst Bankswitch .asm_e09 ld a, d ld [rHDMA1], a ld a, e and $f0 ld [rHDMA2], a ld a, h and $1f ld [rHDMA3], a ld a, l and $f0 ld [rHDMA4], a ld a, c cp $8 jr c, .asm_e3c sub $8 ld c, a ld a, $f ld [hDMATransfer], a call DelayFrame ld a, l add $0 ld l, a ld a, h adc $1 ld h, a ld a, e add $0 ld e, a ld a, d adc $1 ld d, a jr .asm_e09 .asm_e3c ld a, c and $7f ld [hDMATransfer], a call DelayFrame pop af rst Bankswitch pop af ld [hBGMapMode], a ret ; e4a Functione4a: ; e4a callba Function14135 ret ; e51 Functione51: ; e51 callba Functionfb449 ret ; e58 Functione58: ; e58 callba Functionfb4be ret ; e5f Functione5f: ; e5f callba Functionfb48a callba Functionfb4b0 ret ; e6c Functione6c: ; e6c callba Functionfb4b0 ret ; e73 Functione73: ; e73 push de ld a, $0 call GetSRAMBank push bc ld de, $a000 ld a, b call FarDecompress pop bc pop hl ld de, $a000 call Request2bpp call CloseSRAM ret ; e8d FarCopyBytes: ; e8d ; copy bc bytes from a:hl to de ld [hBuffer], a ld a, [hROMBank] push af ld a, [hBuffer] rst Bankswitch call CopyBytes pop af rst Bankswitch ret ; 0xe9b FarCopyBytesDouble: ; e9b ; Copy bc bytes from a:hl to bc*2 bytes at de, ; doubling each byte in the process. ld [hBuffer], a ld a, [hROMBank] push af ld a, [hBuffer] rst Bankswitch ; switcheroo, de <> hl ld a, h ld h, d ld d, a ld a, l ld l, e ld e, a inc b inc c jr .dec .loop ld a, [de] inc de ld [hli], a ld [hli], a .dec dec c jr nz, .loop dec b jr nz, .loop pop af rst Bankswitch ret ; 0xeba Request2bpp: ; eba ld a, [hBGMapMode] push af xor a ld [hBGMapMode], a ld a, [hROMBank] push af ld a, b rst Bankswitch ld a, [$ffd3] push af ld a, $8 ld [$ffd3], a ld a, [InLinkBattle] cp $4 jr nz, .asm_edc ld a, [$ffe9] and a jr nz, .asm_edc ld a, $6 ld [$ffd3], a .asm_edc ld a, e ld [Requested2bppSource], a ld a, d ld [Requested2bppSource + 1], a ld a, l ld [Requested2bppDest], a ld a, h ld [Requested2bppDest + 1], a .asm_eec ld a, c ld hl, $ffd3 cp [hl] jr nc, .asm_f08 ld [Requested2bpp], a .wait call DelayFrame ld a, [Requested2bpp] and a jr nz, .wait pop af ld [$ffd3], a pop af rst Bankswitch pop af ld [hBGMapMode], a ret .asm_f08 ld a, [$ffd3] ld [Requested2bpp], a .asm_f0d call DelayFrame ld a, [Requested2bpp] and a jr nz, .asm_f0d ld a, c ld hl, $ffd3 sub [hl] ld c, a jr .asm_eec ; f1e Request1bpp: ; f1e ld a, [hBGMapMode] push af xor a ld [hBGMapMode], a ld a, [hROMBank] push af ld a, b rst Bankswitch ld a, [$ffd3] push af ld a, $8 ld [$ffd3], a ld a, [InLinkBattle] cp $4 jr nz, .asm_f40 ld a, [$ffe9] and a jr nz, .asm_f40 ld a, $6 ld [$ffd3], a .asm_f40 ld a, e ld [Requested1bppSource], a ld a, d ld [Requested1bppSource + 1], a ld a, l ld [Requested1bppDest], a ld a, h ld [Requested1bppDest + 1], a .asm_f50 ld a, c ld hl, $ffd3 cp [hl] jr nc, .asm_f6c ld [Requested1bpp], a .wait call DelayFrame ld a, [Requested1bpp] and a jr nz, .wait pop af ld [$ffd3], a pop af rst Bankswitch pop af ld [hBGMapMode], a ret .asm_f6c ld a, [$ffd3] ld [Requested1bpp], a .asm_f71 call DelayFrame ld a, [Requested1bpp] and a jr nz, .asm_f71 ld a, c ld hl, $ffd3 sub [hl] ld c, a jr .asm_f50 ; f82 Get2bpp: ; f82 ld a, [rLCDC] bit 7, a jp nz, Request2bpp Copy2bpp: ; f89 ; copy c 2bpp tiles from b:de to hl push hl ld h, d ld l, e pop de ; bank ld a, b ; bc = c * $10 push af swap c ld a, $f and c ld b, a ld a, $f0 and c ld c, a pop af jp FarCopyBytes ; f9d Get1bpp: ; f9d ld a, [rLCDC] bit 7, a jp nz, Request1bpp Copy1bpp: ; fa4 ; copy c 1bpp tiles from b:de to hl push de ld d, h ld e, l ; bank ld a, b ; bc = c * $10 / 2 push af ld h, 0 ld l, c add hl, hl add hl, hl add hl, hl ld b, h ld c, l pop af pop hl jp FarCopyBytesDouble ; fb6