diff options
Diffstat (limited to 'home/vcopy.asm')
| -rw-r--r-- | home/vcopy.asm | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/home/vcopy.asm b/home/vcopy.asm index 69773cfe..b7fb099e 100644 --- a/home/vcopy.asm +++ b/home/vcopy.asm @@ -1,7 +1,7 @@ ; this function seems to be used only once ; it store the address of a row and column of the VRAM background map in hl ; INPUT: h - row, l - column, b - high byte of background tile map address in VRAM -GetRowColAddressBgMap:: ; 1cdd (0:1cdd) +GetRowColAddressBgMap:: xor a srl h rr a @@ -18,7 +18,7 @@ GetRowColAddressBgMap:: ; 1cdd (0:1cdd) ; clears a VRAM background map with blank space tiles ; INPUT: h - high byte of background tile map address in VRAM -ClearBgMap:: ; 1cf0 (0:1cf0) +ClearBgMap:: ld a," " jr .next ld a,l @@ -33,7 +33,7 @@ ClearBgMap:: ; 1cf0 (0:1cf0) jr nz,.loop ret -RedrawRowOrColumn:: ; 1d01 (0:1d01) +RedrawRowOrColumn:: ; This function redraws a BG row of height 2 or a BG column of width 2. ; One of its main uses is redrawing the row or column that will be exposed upon ; scrolling the BG when the player takes a step. Redrawing only the exposed @@ -119,7 +119,7 @@ RedrawRowOrColumn:: ; 1d01 (0:1d01) ; on when talking to sprites, battling, using menus, etc. This is because ; the above function, RedrawRowOrColumn, is used when walking to ; improve efficiency. -AutoBgMapTransfer:: ; 1d57 (0:1d57) +AutoBgMapTransfer:: ld a,[H_AUTOBGTRANSFERENABLED] and a ret z @@ -167,7 +167,7 @@ AutoBgMapTransfer:: ; 1d57 (0:1d57) ld [H_AUTOBGTRANSFERPORTION],a ; store next portion ld b,6 -TransferBgRows:: ; 1d9e (0:1d9e) +TransferBgRows:: ; unrolled loop and using pop for speed rept 20 / 2 - 1 @@ -201,7 +201,7 @@ TransferBgRows:: ; 1d9e (0:1d9e) ; Copies [H_VBCOPYBGNUMROWS] rows from H_VBCOPYBGSRC to H_VBCOPYBGDEST. ; If H_VBCOPYBGSRC is XX00, the transfer is disabled. -VBlankCopyBgMap:: ; 1de1 (0:1de1) +VBlankCopyBgMap:: ld a,[H_VBCOPYBGSRC] ; doubles as enabling byte and a ret z |