Could you use a 65C22 for your PIT?

" DMX512 , a communications protocol that is most commonly used to control stage lighting and effects"
I have to admit I had no idea what DMX512 was before doing an Internet search on it. My knowledge of stage lighting stops in the era when Variacs controlled things. :D

I forgot... DMX512 or ...

I.e. What is a loader? Are you referring to the ld65 configuration file, if so I have this. It took me a while setup my memory and segments.
If you mean something else, and it's not too much trouble, could you please provide a snippet of code, so I can learn and experiment with it. That would be ...

I decided to follow this block diagram found in C74 project and its successor TTL 6502 Here I come (2015) and I haven't read all articles about both project, the questions:

Why this block diagram C74 project have a lot of registers in compare with the 6502 block diagram?

What modifications in C74 ...

We drove about 75 miles west to very near the center line of the path. At totality, we could see the Sun, Moon, Mercury, Jupiter, and Earth. Very cool. (And then my alternator bit the bullet in the heavy stop and go traffic on the way back. Sigh. Fixed now.)

Yup, very nicely condensed. Interestingly I hadn't realised the X16 would just work with a 65C816; I'm guessing it must just ignore the bank address and still use the X16's bank switching.

That's what I am guessing from what I was looking at yesterday in their latest documentation in GitHub, and ...

I could swear I've seen RISC-V used as a microcontroller core, too.

Fortunately, I don't think too many people are seeing these difficulties, as there are so many thriving open source projects on github and gitlab.

The repository search feature in the GitHub web site is fairly good for finding repositories. The search for finding files within a repository by name ...

Alan Cox has a C compiler under development that includes 6502 and 65816 support as part of his FUZIX Compiler Kit project. I don't think it is production ready yet, and I believe it has some limitations due to its intended use as part of the FUZIX project. No idea how good it is. Source is at https ...

Interesting stuff.. Is it nonsense? Well, you're not doing anything new - we did this on Apple IIs and BBC Micros and everything else we used back in the day - even if you look at older terminals, they often had am early CPU in them like the 6800 or 8080 - and a genuine DEC VT100 has an 8080A ...

I ran across a page of microcontroller audio projects. Perhaps there are some ideas that could be cadged from there.

http://elm-chan.org/he_a_e.html

Paul Scott Robson has several open source (MIT license) Basic implementations for 6502 systems available on GitHub at https://github.com/paulscottrobson. These include SuperBasic for the Foenix C256 Junior, MegaBasic for the Mega65, and several others. I'm not sure how mature each one is. Some are ...

Sounds like what you want is a DMA engine, along the lines of the Commodore REU .

That seems really difficult to implement with a 6522, not least because when a DMA engine is running you need to halt the CPU (using the RDY line on the 6502).

The Commodore REU may be near-unobtanium these days ...

Does anybody know if the UART's on the WDC microcontrollers (W65C134, W65C265) suffer from the same bug as the W65C51?

Hello everyone!

I've been fiddling with my next SBC revision's logic, and I found a way to set aside 4KB of unused memory in the $B000-$BFFF area. I've been thinking of all the things I could do with it, expansion boards and whatnot. Things like an additional 6522 VIA, or perhaps a way to set up ...