diff options
Diffstat (limited to 'home/copy2.asm')
| -rw-r--r-- | home/copy2.asm | 66 |
1 files changed, 48 insertions, 18 deletions
diff --git a/home/copy2.asm b/home/copy2.asm index da183300..318ed882 100644 --- a/home/copy2.asm +++ b/home/copy2.asm @@ -1,4 +1,4 @@ -FarCopyDataDouble:: +FarCopyDataDouble:: ; 15d4 (0:15d4) ; Expand bc bytes of 1bpp image data ; from a:de to 2bpp data at hl. ld [wd122+1],a @@ -14,11 +14,11 @@ FarCopyDataDouble:: ld e,a ld a,b and a - jr z,.lessthan$100bytes + jr z,.8bitcopyamount ld a,c and a ; multiple of $100 jr z, .expandloop ; if so, do not increment b because the first instance of dec c results in underflow -.lessthan$100bytes +.8bitcopyamount inc b .expandloop ld a,[de] @@ -34,7 +34,7 @@ FarCopyDataDouble:: call BankswitchCommon ret -CopyVideoDataLCDEnabled:: +CopyVideoDataLCDEnabled:: ; ; Wait for the next VBlank, then copy c 2bpp ; tiles from b:de to hl, 8 tiles at a time. ; This takes c/8 frames. @@ -45,11 +45,10 @@ CopyVideoDataLCDEnabled:: ld [H_AUTOBGTRANSFERENABLED], a ld a, [H_LOADEDROMBANK] - ld [$ff8b], a + push af ld a, b - ld [H_LOADEDROMBANK], a - ld [MBC1RomBank], a + call BankswitchCommon ld a, e ld [H_VBCOPYSRC], a @@ -69,9 +68,8 @@ CopyVideoDataLCDEnabled:: .done ld [H_VBCOPYSIZE], a call DelayFrame - ld a, [$ff8b] - ld [H_LOADEDROMBANK], a - ld [MBC1RomBank], a + pop af + call CommonBankswitch pop af ld [H_AUTOBGTRANSFERENABLED], a ret @@ -94,11 +92,10 @@ CopyVideoDataDoubleLCDEnabled:: xor a ; disable auto-transfer while copying ld [H_AUTOBGTRANSFERENABLED], a ld a, [H_LOADEDROMBANK] - ld [$ff8b], a + push af ld a, b - ld [H_LOADEDROMBANK], a - ld [MBC1RomBank], a + call BankswitchCommon ld a, e ld [H_VBCOPYDOUBLESRC], a @@ -118,9 +115,8 @@ CopyVideoDataDoubleLCDEnabled:: .done ld [H_VBCOPYDOUBLESIZE], a call DelayFrame - ld a, [$ff8b] - ld [H_LOADEDROMBANK], a - ld [MBC1RomBank], a + pop af + call BankswitchCommon pop af ld [H_AUTOBGTRANSFERENABLED], a ret @@ -134,7 +130,41 @@ CopyVideoDataDoubleLCDEnabled:: ld c, a jr .loop -ClearScreenArea:: +FillMemory:: ; 166e (0:166e) + push af + ld a,b + and a + jr z, .8bitcopyamount + ld a,c + and a + jr z, .mulitpleof$100 +.8bitcopyamount + inc b +.multipleof$100 + pop af +.loop + ld [hli],a + dec c + jr nz, .loop + dec b + jr nz, .loop + ret + +Func_1681:: ; 1681 (0:1681) + push bc + ld b,a + ld a, [H_LOADEDROMBANK] + push af + ld a,b + call BankswitchCommon + ld b,[hl] + pop af + call BankswitchCommon + ld a,b + pop bc + ret + +ClearScreenArea:: ; 1692 (0:1692) ; Clear tilemap area cxb at hl. ld a, $7f ; blank tile ld de, 20 ; screen width @@ -152,7 +182,7 @@ ClearScreenArea:: jr nz, .y ret -CopyScreenTileBufferToVRAM:: +CopyScreenTileBufferToVRAM:: ; 16a4 ; Copy wTileMap to the BG Map starting at b * $100. ; This is done in thirds of 6 rows, so it takes 3 frames. |