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Add hook for VBL callback
This commit is contained in:
Lucas Scharenbroich
parent
3eba3fa8e6
commit
4ee67fb8be
@ -175,9 +175,11 @@ OVERLAY_SOLID equ $8000 ; Overlay covers the scan line and is fu
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OVERLAY_ABOVE equ $0000 ; Overlay is drawn above scanline sprites
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OVERLAY_BELOW equ $4000 ; Overlay is drawn below scanline sprites
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; GetAddress table IDs
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; GetAddress IDs
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scanlineHorzOffset equ $0001
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scanlineHorzOffset2 equ $0002
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tileStore equ $0003
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vblCallback equ $0004
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; CopyPicToBG1 flags
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COPY_PIC_NORMAL equ $0000 ; Copy into BG1 buffer in "normal mode"
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@ -166,8 +166,14 @@ OneSecHandler mx %11
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; This is OK, it's referenced by a long address
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VBLTASK hex 00000000
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dw 0
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TaskCnt dw 1
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hex 5AA5
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VblTaskCode mx %11
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lda #1
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stal TaskCnt ; Reset the task count
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_VblTaskPatch jml _TaskStub ; Just something to catch the interrupt
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_TaskStub rtl
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mx %00
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; Reset the engine to a known state
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; Blitter initialization
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@ -192,6 +192,7 @@ DIRTY_BIT_SPRITE_ARRAY equ $0040
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scanlineHorzOffset equ $0001 ; Table of 416 words, a double-array of scanline offset values. Values must be in range [0, 163]
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scanlineHorzOffset2 equ $0002 ; Table of 416 words, a double-array of scanline offset values. Values must be in range [0, 163]
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tileStore equ $0003
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vblCallback equ $0004 ; User routine to be called by VBL interrupt. Set to $000000 to disconnect
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; CopyPicToBG1 flags
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COPY_PIC_NORMAL equ $0000 ; Copy into BG1 buffer in "normal mode" treating the buffer as a 164x208 pixmap with stride of 256
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14
src/Master.s
14
src/Master.s
@ -2,7 +2,7 @@
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TYP $BA ; Tool set file
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DSK Tool160
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XPL
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XPL
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; Main toolbox interface and code
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@ -12,41 +12,41 @@
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; 64KB Tile Memory
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ASM static/TileData.s
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KND #$1001 ; Type and Attributes ($10=Static,$01=Data)
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KND #$1101 ; Type and Attributes ($10=Static,$01=Data)
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ALI BANK
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SNA TDATA
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; 64KB Sprite Plane Data
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ASM static/SprData.s
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KND #$1001 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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KND #$1101 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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ALI BANK
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SNA SDATA
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; 64KB Sprite Mask Data
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ASM static/SprMask.s
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KND #$1001 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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KND #$1101 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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ALI BANK
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SNA SMASK
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; 64KB Tile Store
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ASM static/TileStore.s
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KND #$1001 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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KND #$1101 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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ALI BANK
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SNA TSTORE
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; 64KB Rotation Data Tables
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ASM RotData.s
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KND #$1001 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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KND #$1101 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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ALI BANK
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SNA ROTDATA
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; Additional code
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; ASM FastCopies.s
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; KND #$1001 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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; KND #$1101 ; Type and Attributes ($11=Static+Bank Relative,$01=Data)
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; ALI BANK
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; SNA FASTCPY
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@ -6,7 +6,7 @@
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; X = first tile
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; Y = last tile
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;
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; To copy in three tiles starting at tile 5, for example, X = 5 and Y = 9
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; To copy in four tiles starting at tile 5, for example, X = 5 and Y = 9
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_LoadTileSet
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txa
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_Mul128 ; Jump to the target location
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26
src/Tool.s
26
src/Tool.s
@ -887,7 +887,7 @@ _TSSetBG1Scale
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sta BG1Scaling
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_TSExit #0;#2
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; Pointer GetAddress(tblId)
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; Pointer GetAddress(addrId)
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_TSGetAddress
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:tblId equ FirstParam+0
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:output equ FirstParam+2
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@ -919,7 +919,7 @@ _TSGetAddress
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:out
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_TSExit #0;#2
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; SetAddress(tblId, Pointer)
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; SetAddress(addrId, Pointer)
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_TSSetAddress
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:ptr equ FirstParam+0
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:tblId equ FirstParam+4
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@ -944,7 +944,27 @@ _TSSetAddress
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lda :ptr+2,s
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sta BG1StartXMod164Tbl+2
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bra :out
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:next_2
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:next_2 cmp #vblCallback
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bne :next_3
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lda :ptr,s
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ora :ptr+2,s
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beq :vbl_restore
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lda :ptr,s
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stal _VblTaskPatch+1 ; long addressing because we're patching code in the K bank
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lda :ptr+1,s
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stal _VblTaskPatch+2
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bra :out
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:vbl_restore
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lda #_TaskStub
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stal _VblTaskPatch+1
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lda #>_TaskStub
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stal _VblTaskPatch+2
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bra :out
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:next_3
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:out
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_TSExit #0;#6
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@ -4,7 +4,7 @@ _RenderTile
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lda TileStore+TS_SPRITE_FLAG,x ; any sprites on this tile?
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bne _HasSprites
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; Probably best to rework this to just jump to the tile routine directly, event if there
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; Probably best to rework this to just jump to the tile routine directly, even if there
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; is some boilerplate code because it is useful to be able to access the data bank before
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; switching to the code field bank.
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