26 rows of text on the Commodore C64
Автор: George Kirkham
Загружено: 2022-09-16
Просмотров: 628
Описание:
Looking into C64 demo effects, here is one I personally never saw that often - 26 rows of text on the C64. The effect makes use of opening the top & bottom borders and $d011 yscroll bits to push the screen down a row, at specific raster line. This effectively forces another line of text by causing an additional “badline” by forcing the VIC II to repeat the previous line when the display is normally hidden by the border. With some careful $d018 screen base swapping we end up with 26 rows of text. Link to PRG & source in C64 Studio format below. Should work on PAL/NTSC. Maybe I should continue this as a “C64 Back to Basics Demo Effects” series…
SORRY - New working link to source code **
https://drive.google.com/file/d/1drLP...
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