Denial

The screenshot looks nice! This would be a very challenging project though. It kind of requires double buffering and it’s not the VIC’s strength because of the limited graphics memory.

This looks fantastic! The wall perspective suits the hardware and hides the wide pixels nicely. Good choice to use hires.

Merytsetesh wrote: ↑Thu Mar 14, 2024 12:21 pm If I had one mod for the VIC KERNAL, it would be to amend the screen routines to take account of variable dimensions instead of relying on the hardcoded values...

Yeah, asking for the screen size returns hard coded values. It would have been nice if that was dynamic, but sadly too late.

I tried a couple of file browsers before I started making my own. I didn’t like the ones I tested because they didn’t feel intuitive to me. Lots of keys to remember or small inconveniences like for example CBM Command overwriting files without asking and using @: which triggers the dreadful 1541 bug...

What application did you have in mind? I’m working on a file manager application for the C128 and I started considering to port it to the VIC20 since it doesn’t have many such applications. The standard screen would of course work but it would be nice to make use of additional hardware as well. I’m...

Thanks for the detailed response. So the only problem would be to ensure that the running program can fit in the RAM that isn’t blocked by cartridge ROM.

Did the 40- or 80-column expansions provide an alternate kernal ROM to allow them to be used by BASIC programs without modifications? Or did some of them, or none?

All the pixels seems to be there. It’s just really blurry. The image quality isn’t great on an unmodded machine and a HDMI converter on top of that only can get worse.

AndyH wrote: ↑Mon Jul 31, 2023 3:31 pmI added a command that exports the sprite data as code instead of raw binary data. The code just draws the preshifted sprite with a series of lda/sta's.

Neat! So each frame of animation would have its own set of dedicated render code?

You seem to get as far as the VIC chip initialization since you have something displayed with the correct number of volumns and rows. If you type on the keyboard, does the screen change in any way as a response? You could try poking to change the border color or start a sound to see if only the disp...

Still no list of included games to be found?

Cheese and Onion should work on NTSC and is a cartridge game. H.E.R.O isn’t on cartridge, but has an attract mode. H3LP B0DG3 looks nice but I haven’t tried it. Super Monza also looks really nice.

Is there a list of the actual included games somewhere public?

Mike wrote: ↑Sun Feb 26, 2023 10:11 am After a THEN, the next command is not called over $0308, rather the interpreter makes a direct, unvectored jump. This is done because THEN also accepts a line number, which is then jumped to if the IF .. THEN clause is true.

Ouch, how annoying.

Very helpful information! Thanks!

I happen to be interested in this topic as well right now. What’s the issue with IF, THEN that needs special handling?