half works :D
need to: * align the framebuffer on 4096 byte boundary? * fix color reversal
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@ -69,8 +69,9 @@ wait_vblank:
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sta SDMCTL
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wait_start:
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sta WSYNC
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lda VCOUNT
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cmp #12
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cmp #15
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bne wait_start
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ldy #0
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