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Video: Lesson P4 - Bitmap Functions on the Atari Lynx

Posted: Wed Apr 24, 2019 9:43 pm
by akuyou


http://www.chibiakumas.com/6502/platform.php#LessonP4

Unlike most of our systems The Lynx has a 16 color Bitmap screen - effectively we can just write data to it - one nibble per color to ram, and it will appear on screen!

We do need to do a bit of setup first to get it working!

Re: Video: Lesson P4 - Bitmap Functions on the Atari Lynx

Posted: Tue Apr 07, 2020 8:43 am
by laoong
After I've run the example on PC-Engine I thought that I could check the Lynx version as well.

Here's the result.

It's almost working :)

I've stumbled on such things many times - Handy isn't reflecting real hardware very well.

Image

Re: Video: Lesson P4 - Bitmap Functions on the Atari Lynx

Posted: Tue Apr 07, 2020 9:58 pm
by akuyou
Hmm, the sprite is there, but the font isn't ?
I'll have a look at the code... if you figure anything out, let me know and I'll change the code accordingly.

Re: Video: Lesson P4 - Bitmap Functions on the Atari Lynx

Posted: Sat May 29, 2021 9:34 pm
by puppydrum64
I had similar problems with running the Lesson 1 6502 code on NES emulators, they all seemed to work differently. Most of those problems were solved by clearing the RAM on startup. This may seem redundant but on real hardware not everything defaults to zero