Breakthrough in TRS-80 GraphicsThe venerable TRS-80 Model 3 (and its forebearer the Model 1) could display graphics at a resolution of 128 x 48. Those were sturdy pixels you didn't have to squint to see. Unless you wanted to use most of the screen, drawing something like an airplane was difficult:
I've discovered techniques that increase that resolution by up to 4 times vertically. That means our airplane can look like this:
Put that together with a bunch of hair-pulling programming and you can have a few planes moving across the screen:
Check out the blitz page where you can download and see the finished version. I've written a number of other demos:
- The classic bouncing ball
- Marquee lights
- Apple ][ bload
- Full-screen 128 x 192 graphics
- 24 x 156 x 5 graphics
- All 320 characters at once
- Scrolling star fields
- Double resolution Dancing Demon
And I will be writing more.
Read on to learn how it's done.
George Phillips, July 8, 2009, george -at- 48k.ca