base:dots_and_plots
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| base:dots_and_plots [2016-02-18 03:59] – tww_ctr | base:dots_and_plots [2023-02-08 16:03] – [BitMap Memory Layout] bepp | ||
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| ===== BitMap Memory Layout ===== | ===== BitMap Memory Layout ===== | ||
| - | The BitMap Memory can be displayed from several memory locations. For this Article we'll use the RAM area from $2000 - $3f3f in the default VIC Bank. The screen resolution is 320x200 and one pixel is represented by 1 bit. 320x200/8 = #8000/$14f0 bytes. Screen Memory for collors | + | The BitMap Memory can be displayed from several memory locations. For this Article we'll use the RAM area from $2000 - $3f3f in the default VIC Bank. The screen resolution is 320x200 and one pixel is represented by 1 bit. 320x200/8 = #8000/$14f0 bytes. Screen Memory for colors |
| The 8 first horizontal pixels in the top left corner is represented by the byte at $2000. Then the second 8 bits directly below it, is represented by $2001. This goes on including $2007 which then totally covers the first 8 x 8 pixel block of the HiRes Image. $2008 begins at the 9th pixel on the top line and represents another 8 horizontal pixels (pixels 9 to 16 of the first line). $2009 is then the next 8 pixels directly below. | The 8 first horizontal pixels in the top left corner is represented by the byte at $2000. Then the second 8 bits directly below it, is represented by $2001. This goes on including $2007 which then totally covers the first 8 x 8 pixel block of the HiRes Image. $2008 begins at the 9th pixel on the top line and represents another 8 horizontal pixels (pixels 9 to 16 of the first line). $2009 is then the next 8 pixels directly below. | ||
base/dots_and_plots.txt · Last modified: 2024-01-19 15:18 by tww