Denial

Happy to help! ;D

I love it!
And so educational! Can't wait to impress my friends with my new pancake flipping skills

Just shining some light on a potentially symbiotic project :) Whatever brings you joy! Really just a matter of if you prefer to devote your hours to writing Vi or the OS. I haven't used Vi65 in any real way, so maybe I am a liiiittle selfishly curious to know how it would hold up to real usage. Anyw...

Are you aware of Soci's vi65 ? I don't think the source is currently available (and I dunno if Soci would be open to sharing it), which, as a tool, makes it kind of a deal breaker for me. Nonetheless, might be worth looking into depending on how much time you want to sink into editor development. I ...

Most concepts of assembly transfer from computer-to-computer. If you understand the fundamentals, it's easy to apply them to any given system. But the 6502 is as good a place to start as any, and Jim Butterfield's "Machine Language for the Commodore 64 and other Commodore Computers" is pro...

Aha, I've been found! :mrgreen: Yes, this has been a "little" project of mine for quite a while. The veritable embodiment of scope creep. As its name implies, this project originated as a symbolic monitor, then a TASM (or VASM) like editor/assembler. The RAM requirements kept growing, and ...

This is incredibly cool stuff.
Thanks for sharing and welcome to the forum, Neil!

These two are pretty popular:
https://jlcpcb.com/
https://oshpark.com/

Ah, very good. Thanks for the validation! Yeah, my immediate thought was that the OS and/or input device were to blame, but the VICE status bar gave me some assurance that every relevant key event was reaching the emulator correctly in at least these simple test cases. I definitely believe it's a co...

Hey all, I haven't dug too deep into this, but has anyone encountered any quirks with the the handling of key-rollover in the Vic-20 emulation in VICE? The C64 keyboard emulation seems to handle these cases. For context, I was adapting the routine described here although, from some further testing, ...

Definitely sounds like a bug, Rich. I couldn't find the source for this cartridge, but it seems like the browser is skipping over the (17*n)th file/directory for some reason. Maybe the file offset is incrementing to 17 (because of a general cursor down handler for example), where the next file would...

chysn, does your assembler JSR to the PC instead of RTI'ing to it as Mike said? I guess based on your question regarding RTS behavior that your assembler returns to the monitor in such a scenario? I've been working on my own assembler and went with the push PC, P, Y, X, A, RTI approach as well. Some...

CODE: SELECT ALL ldy #8 @@ lda src,y sta dest,y dey bpl @@ Although 9/10 times this will be ldy #8-1 :) That or @@ lda src-1,y sta dest-1,y dey bne @@ Which has the benefit of allowing iteration for .Y values of [$80, $100). Of course, this only works with non-indirect addressing.

Are you aware of these two? CBM Command (looks like this is someone else's clone of the repo? Sadly, I think Payton left the community and deleted everything he could after growing frustrated with some members of the community). DIRPlus I think they both use 22-columns (or thereabout) and I'm not su...

Mike wrote: ↑Mon Oct 02, 2023 12:57 am IMO, users would be better off using one of the bigger 8-bit CBMs instead, or a C128.

Agreed! The VIC chip is the soul of the computer IMO (it's even in the name ha). Take away the VIC-20's video hardware, and you're left with a pretty generic 8-bit computer.