nesdev.com

Wow! I saw this come up in my Twitter or RSS feeds a few days ago and bookmarked it. This is really quite impressive though. Not that it would replace my local setup, but maybe I can get some more local gamedevs interested in retro-dev.

It was kind of touched on by some people, but even cc65 doesn't strictly use the standard C calling convention by default where everything needs to be pushed onto the stack. Normally it uses fastcall. The last argument is placed in the A register (or AX for 16 bit values), and return value is also p...

I did specifically say pragmatism eventually winning out over cost and principle. ;) I do get it though, especially the principle part. Despite owning several copies of Windows, I rarely use it because I simply don't like to. and have the X server in the outer OS display the result Interesting, I di...

The official workaround appears to be to install Ubuntu 18.04 LTS in an LXD container and run wine32 in that. Yeah... I saw that... If you are going to run something in a VM to run Windows software I'm not sure why you wouldn't just run Windows. Pragmatism really has to win out over principle or ev...

Huh, apparently not just an OS X problem. https://www.linuxuprising.com/2019/06/wine-developers-concerned-with-ubuntu.html tl;dr The next major version of Ubuntu is dropping 32 bit packages as well, and the Wine devs are Concerned. Huh... I really didn't think Wine used 32 bit libraries on a 64 bit ...

I've skimmed some of the cc65 optimizer code, and there's really not that much to it. It simply doesn't recognize many cases where it can optimize, and those are the only places where it really seems to relax the spec. I'm not going to tell you "just write it all in assembly", because I don't. I jus...

calima wrote:Is xor a valid alias to eor?

Uh... probably not. That's just the sort of shoddy off the top of my head examples I'm known for. LOL

Related tip: you can use the pseudo variables __A__ and __AX__ to make shuffling data in and out of inline assembly much easier. Quite handy when you pair it with (abuse?) the comma operator. Dumb example: #define DUMB_MACRO(value) (__A__ = value, asm("xor #$0F"), __A__) my_variable = DUMB_MACRO(45)...

I watched the intro bit with all of the games, and they look really good! Sorta skimmed the rest of the video though. There are a lot of impressive achievements in those games.

For the OPs question, I've never found a particularly better way to do it either. I have a global zero page variable 'idx' that I use exclusively as a temporary value for indexes. You can use it with the comma operator to make it a little less obtuse, if a little more obscure. I like doing it this w...

Sounds kinda similar to what I do in Chipmunk's spatial hash implementation. I timestamp the cells, and if the timestep doesn't match when inserting or querying against a cell, then the list is old and added back to the pool.

Hmm, yeah. I was going to say maybe a min-heap, but if you only have a small number of chips a linear search might be faster anyway? It almost sounds like you are describing transactional memory, but need a lite version of it. If you aren't familiar, it's a way to do lockless threading whereby each ...

Hmm. Is there really reason to believe 32 bit Wine will stop running as long as Wine itself is 64 bit? AFAIK, OS X isn't somehow preventing 32 bit instructions from running, they are just removing the 32 bit system libraries that native 32 bit code relies on. Wine itself is a regular 64 bit executab...

I used to write physics engines for a living, and this can be a fairly endlessly difficult problem if you want a super-duper-generic-and-scalable solution. The most important step you can do first is to split your data into separate types that don't collide. (ex: moving/non-moving, player/enemy) I'v...

Nice. My homebrew games seem to run fine on it. Seems to not ignore key repeat though? (At least on Linux, haven't tried it on Mac yet). Have you tried deploying it as a WASM build since that's pretty easy with Rust? Might be a nice alternative to JSNES.