132 lines
6.2 KiB
ArmAsm
132 lines
6.2 KiB
ArmAsm
; _TBMaskedTile
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;
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; These tile renderes are for "normal" tiles that also apply their mask data. If the case of the second
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; background being disabled, the optimized variants are the same as Tile00000
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;
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; Y register = address of code field tile
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; X register = tile address
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; Accumulator = logical word offset of the tile (0, 2, 4, ..., 82)
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;
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; Need to slightly remap these register inputs to save into the direct page cached values
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_TBMaskedTile_00
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_TBMaskedTile_0H
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sta _X_REG ; Save these values as we will need to reload them
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sty _Y_REG ; at certain points
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stx _T_PTR
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; Do the left column first
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CopyMaskedWord tiledata+0;tiledata+32+0;$0003
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CopyMaskedWord tiledata+4;tiledata+32+4;$1003
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CopyMaskedWord tiledata+8;tiledata+32+8;$2003
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CopyMaskedWord tiledata+12;tiledata+32+12;$3003
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CopyMaskedWord tiledata+16;tiledata+32+16;$4003
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CopyMaskedWord tiledata+20;tiledata+32+20;$5003
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CopyMaskedWord tiledata+24;tiledata+32+24;$6003
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CopyMaskedWord tiledata+28;tiledata+32+28;$7003
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; Move the index for the JTableOffset array. This is the same index used for transparent words,
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; so, if _X_REG is zero, then we would be patching out the last word in the code field with LDA (0),y
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; and then increment _X_REG by two to patch the next-to-last word in the code field with LDA (2),y
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inc _X_REG
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inc _X_REG
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; Do the right column
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CopyMaskedWord tiledata+2;tiledata+32+2;$0000
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CopyMaskedWord tiledata+6;tiledata+32+6;$1000
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CopyMaskedWord tiledata+10;tiledata+32+10;$2000
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CopyMaskedWord tiledata+14;tiledata+32+14;$3000
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CopyMaskedWord tiledata+18;tiledata+32+18;$4000
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CopyMaskedWord tiledata+22;tiledata+32+22;$5000
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CopyMaskedWord tiledata+26;tiledata+32+26;$6000
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CopyMaskedWord tiledata+30;tiledata+32+30;$7000
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rts
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;_TBMaskedTile_0H
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; sta _X_REG
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; sty _Y_REG
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; stx _T_PTR
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;
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; CopyMaskedWord tiledata+64+0;tiledata+64+32+0;$0003
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; CopyMaskedWord tiledata+64+4;tiledata+64+32+4;$1003
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; CopyMaskedWord tiledata+64+8;tiledata+64+32+8;$2003
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; CopyMaskedWord tiledata+64+12;tiledata+64+32+12;$3003
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; CopyMaskedWord tiledata+64+16;tiledata+64+32+16;$4003
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; CopyMaskedWord tiledata+64+20;tiledata+64+32+20;$5003
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; CopyMaskedWord tiledata+64+24;tiledata+64+32+24;$6003
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; CopyMaskedWord tiledata+64+28;tiledata+64+32+28;$7003
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;
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; inc _X_REG
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; inc _X_REG
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;
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; CopyMaskedWord tiledata+64+2;tiledata+64+32+2;$0000
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; CopyMaskedWord tiledata+64+6;tiledata+64+32+6;$1000
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; CopyMaskedWord tiledata+64+10;tiledata+64+32+10;$2000
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; CopyMaskedWord tiledata+64+14;tiledata+64+32+14;$3000
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; CopyMaskedWord tiledata+64+18;tiledata+64+32+18;$4000
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; CopyMaskedWord tiledata+64+22;tiledata+64+32+22;$5000
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; CopyMaskedWord tiledata+64+26;tiledata+64+32+26;$6000
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; CopyMaskedWord tiledata+64+30;tiledata+64+32+30;$7000
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;
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; rts
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_TBMaskedTile_V0
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_TBMaskedTile_VH
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sta _X_REG
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sty _Y_REG
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stx _T_PTR
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CopyMaskedWord tiledata+0;tiledata+32+0;$7003
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CopyMaskedWord tiledata+4;tiledata+32+4;$6003
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CopyMaskedWord tiledata+8;tiledata+32+8;$5003
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CopyMaskedWord tiledata+12;tiledata+32+12;$4003
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CopyMaskedWord tiledata+16;tiledata+32+16;$3003
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CopyMaskedWord tiledata+20;tiledata+32+20;$2003
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CopyMaskedWord tiledata+24;tiledata+32+24;$1003
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CopyMaskedWord tiledata+28;tiledata+32+28;$0003
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inc _X_REG
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inc _X_REG
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CopyMaskedWord tiledata+2;tiledata+32+2;$7000
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CopyMaskedWord tiledata+6;tiledata+32+6;$6000
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CopyMaskedWord tiledata+10;tiledata+32+10;$5000
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CopyMaskedWord tiledata+14;tiledata+32+14;$4000
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CopyMaskedWord tiledata+18;tiledata+32+18;$3000
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CopyMaskedWord tiledata+22;tiledata+32+22;$2000
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CopyMaskedWord tiledata+26;tiledata+32+26;$1000
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CopyMaskedWord tiledata+30;tiledata+32+30;$0000
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rts
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;_TBMaskedTile_VH
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; sta _X_REG
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; sty _Y_REG
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; stx _T_PTR
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;
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; CopyMaskedWord tiledata+64+0;tiledata+64+32+0;$7003
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; CopyMaskedWord tiledata+64+4;tiledata+64+32+4;$6003
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; CopyMaskedWord tiledata+64+8;tiledata+64+32+8;$5003
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; CopyMaskedWord tiledata+64+12;tiledata+64+32+12;$4003
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; CopyMaskedWord tiledata+64+16;tiledata+64+32+16;$3003
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; CopyMaskedWord tiledata+64+20;tiledata+64+32+20;$2003
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; CopyMaskedWord tiledata+64+24;tiledata+64+32+24;$1003
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; CopyMaskedWord tiledata+64+28;tiledata+64+32+28;$0003
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;
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; inc _X_REG
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; inc _X_REG
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;
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; CopyMaskedWord tiledata+64+2;tiledata+64+32+2;$7000
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; CopyMaskedWord tiledata+64+6;tiledata+64+32+6;$6000
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; CopyMaskedWord tiledata+64+10;tiledata+64+32+10;$5000
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; CopyMaskedWord tiledata+64+14;tiledata+64+32+14;$4000
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; CopyMaskedWord tiledata+64+18;tiledata+64+32+18;$3000
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; CopyMaskedWord tiledata+64+22;tiledata+64+32+22;$2000
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; CopyMaskedWord tiledata+64+26;tiledata+64+32+26;$1000
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; CopyMaskedWord tiledata+64+30;tiledata+64+32+30;$0000
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;
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; rts
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