Done, seems I did it right in the code itself but messed up in this post AFAICS.

I am porting EhBASIC to different platforms. I started from Klaus Dormann's repo and reworked the setup. I also made code compatible with cc65 assembler and ported it to sim65.
Please find the information on the codeberg repo: https://codeberg.org/NostalgicDreams/ngcd-MOS6502-EhBASIC

Plan is to ...

In the meantime, what FPGA boards are you guys using? I'm looking for something somewhat modern in the sub $100 range. I have a TinyFPGA (A2) that I want to start using but it doesn't have enough IO for VGA and memory.

I have a few Digilent Inc. boards. They have a sub-$100 starter board in the ...

My project for an open source chip, the Retro-uC is now live on crowdsupply .

This is a micro-controller with three CPU cores included with a 6502 one of them. This core is taken from a C64 emulation so is the NMOS version.
If you always wanted to have a controller board like the Arduino but with ...

I made a short demo of the Retro-uC - also including a MOS6502 CPU of course - running on a XLR8 FPGA board. I posted a video on my blog.

I am using for the moment a NMOS compatible core as was used in FPGA reimplementation of C64.

I presented my project on FOSDEM, firstly a presentation on the Retro-uc itself; secondly a presentation focused on the (open source) tools used for realizing the chip. In the videos you'll find more explanation of the project and the choices made.

Will it be possible to run the IOs at 3.3v as well as 5v? That would give it extra flexibility.
If I have the money when the crowdfunding campaign goes live, I'll probably put in a bit.

I'll need to simulate it what happens when 3.3V is provided for VIO. I guess they will work but it's unsure if ...

OK, I have been busy mainly with budgeting and trying to get technical production things worked out. I now made a blog post summary of the options I plan for the Retro-uC. All comments are welcome here or on the hackaday.io log .

I do plan to include peripherals in the uC but that part is not fixed ...

Also posted in other thread. An European PCB house where you can do quoting and ordering online: https://www.eurocircuits.com.

Saw this thread mentioned elsewhere. Here is a link to an European PCB house: https://www.eurocircuits.com. Quoting and ordering can be done online.

Link for FPGA implementation of a C64 by Peter Wendrich.
T65 is another 6502 core; it's VHDL though. I'm using it for my Retro-uC and have a fork on my gitlab.

The real difficulty is in the spec: everyone will have an opinion as to what's attractive to include! The secret, I think, is to listen to what people are asking for, but don't in any way attempt to please everyone. Possibly even use your own judgement and please no-one. The people who speak up may ...

What package are you thinking of offering?

Likely a poor men's package, e.g. direct-on-board (die is put on PCB and wire-bonded directly to PCB). The prices I have now make setup costs for packaging higher than direct-on-board for low volumes.
I plan to have different PCB layouts on which I will ...

For this particular project, if the design is pad-limited then it makes good sense to include all three cores, and allow any one of them to be the one that's running. It might make good sense even if it isn't pad-limited, because it makes the part appeal to more people and so can sell in a higher ...