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base:repeating_char-lines [2015-04-17 04:33] – external edit 127.0.0.1base:repeating_char-lines [2022-04-12 15:47] (current) icepic
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 ====== Repeating char-lines ====== ====== Repeating char-lines ======
 +By HCL/Booze Design
  
 Here is a small program that doubles one char-line. If you run it from the basic screen you should see the "64k ram system..." text-line being doubled. The trick can of course be used several times, and by changing char-bank or video-bank at each repetition, large areas of graphics can be moved by just storing one char-line. Here is a small program that doubles one char-line. If you run it from the basic screen you should see the "64k ram system..." text-line being doubled. The trick can of course be used several times, and by changing char-bank or video-bank at each repetition, large areas of graphics can be moved by just storing one char-line.
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         nop         nop
  
- cmp $d012 ; ..and make a bit more stabel raster+ cmp $d012 ; ..and make a bit more stable raster
  bne *+5  bne *+5
  bit $ea  bit $ea
base/repeating_char-lines.txt · Last modified: 2022-04-12 15:47 by icepic