NES BIt Manipulation...
... is a pain!
In order to draw a sprite the nes creates a 4-bit value which it uses to index a color in a pallete. These 4-bits (conveniently) come from disparate locations in memory. The lower two bits come from a "pattern table" however they are 8 bytes apart. The upper two bits come from the "sprite table".
Simply, I must access three seperate locations in memory, selectively make them fit together, look up a color, and then plot to draw one pixel. I can't wait until this is done...
In order to draw a sprite the nes creates a 4-bit value which it uses to index a color in a pallete. These 4-bits (conveniently) come from disparate locations in memory. The lower two bits come from a "pattern table" however they are 8 bytes apart. The upper two bits come from the "sprite table".
Simply, I must access three seperate locations in memory, selectively make them fit together, look up a color, and then plot to draw one pixel. I can't wait until this is done...
posted by Adam at 11:24 AM
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