
FWIW a live stream on “opening the border” on the c64: https://www.youtube.com/watch?v=3RrwIwirxEA

@pezi_pink ^

@soegaard2 cool! I have some (very messy) asi64 code that does stable raster splits with the double IRQ method, and sprites in the borders. Programming with a calculator, your timing has to be exact to the cycle. Very satisfying to pull off some of the C64 magic.

nothing compared to monsters like this! https://www.youtube.com/watch?v=nLIUkBa_mA0

I remember (when I was young) I had a raster bar moving up and down following a sine pattern. The timing is indeed very finicky.

I don’t think I ever made sprites in the border.

the sprites in the border requires you to open the side borders by flipping a bit on and off on a VIC register at the exact cycle it starts to display the borders, on every scanline. Then it will show the sprites in the borders since it “forgets” it hasn’t drawn the border !

as they are going to show in that stream, presumably

Btw - I saw your hardware project: uploading a program to a running c64 from a laptop. Impressive!

ah yes thanks! I have an FPGA version of that as well written with Fairylog. It is great to have stuff running on the real hardware. I have a setup for the SNES as well.

I saw a similar project, where a dual port ram was used.

only my Amiga is lacking a Racket language, forthcoming ! at some point ……

I fell over DEC’s Scheme on Amiga the other day. Maybe R2RS ?

ah, I meant more my usual trick of macros-over-assembler, create your own language for 68000 series CPUs

but first I need to get my latest project which is a programmable CLR language and CIL assembler off the ground :slightly_smiling_face: build your own .NET languages with macros, what is not to like.

Got it!

if only someone would pay me to do all this stuff so I could work on it full time, then I could take over the world…. one can dream .. :wink:

Yeah, you’ll need a “killer app” :wink:

ha! but then you have to support and maintain it … can’t win :slightly_smiling_face:

could you elaborate on this please? sounds really interesting


haha student newspaper. I like the picture of the old terminal.

Hilarious comments too ‘Racket is not fast (compared to C, C++, or Rust).’


> where students are taught programming basics like generative recursion and sorting algorithms there’s a certain chance the article is in fact about Beginning/Intermediate Student Language instead of Racket