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Move graphics origin to bottom left.
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applecorn.po
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applecorn.po
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@ -57,9 +57,11 @@ CVTCOORD
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LSR A
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ROR ZP2+0
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LSR A
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STA VDUQ+8 ; ZP2 -> Y-coord
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LDA ZP2+0
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ROR
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ROR ZP2+0
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STZ VDUQ+8 ; MSB always zero
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SEC
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LDA #191 ; 191 - ZP2 -> Y-coord
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SBC ZP2+0
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STA VDUQ+7
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RTS
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@ -585,7 +585,8 @@ VDU16 >>> XF2MAIN,CLRHGR
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VDU16RET >>> ENTAUX
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STZ XPIXEL+0
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STZ XPIXEL+1
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STZ YPIXEL
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LDA #191
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STA YPIXEL
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RTS
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* VDU 17 - COLOUR n - select text or border colour
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