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I am interested in building a #uxn cpu on an #fpga.
I have already built #Mecrisp #Forth on the #PicoIce.
A Uxn cpu is just a slightly different stack machine.
Maybe I will eventually build an entire Varvara computer on an FPGA.

@neauoire
@rek

https://forth.pythonlinks.info/hana-uxn


Hana UXN

Hana UXN will support the UXN opcodes.
forth.pythonlinks.info
#uxn #forth #fpga #Mecrisp #picoice @Devine Lu Linvega @R E K
in reply to Forth Computer

Devine Lu Linvega
Devine Lu Linvega
• •
that's exciting! The 4 immediate opcodes should be pretty interesting to implement. Do you have all the docs you need? The opcode test rom can be found here: https://wiki.xxiivv.com/site/uxn.html

XXIIVV — uxn

wiki.xxiivv.com
in reply to Devine Lu Linvega

Forth Computer
Forth Computer
• •

Thank you for pointing out the 4 immediate opcodes.

The J1 and Mecrisp Forth cpus have 3 commands where the last 13bits define the address and a literal command where the last 15 bits are the number.

Not that hard to set a flag, so that the processor pauses for the next opcode which is the address or literal.

@neauoire @rek

@Devine Lu Linvega @R E K
in reply to Devine Lu Linvega

Forth Computer
Forth Computer
• •

What I am struggling with is what to do with this Hana-Uxn. First my attention was drawn to the almost c compilers, tragic that they are in archive mode.

Probably Uxn can run on a $4.00 Raspberry Pi Pico board.

What would you do with a $28 Uxn FPGA?

The C compiler is still very interesting.

@neauoire @rek

@Devine Lu Linvega @R E K
in reply to Forth Computer

Devine Lu Linvega
Devine Lu Linvega
• •
The C compiler is not archived?
https://github.com/lynn/chibicc

GitHub - lynn/chibicc: A small C compiler… for uxn

A small C compiler… for uxn. Contribute to lynn/chibicc development by creating an account on GitHub.
GitHub
in reply to Devine Lu Linvega

Forth Computer
Forth Computer
• •

Perfect!

Thank you for the link to the #uxn C compiler. Just what I needed. Sorry I missed that link on Awesome Uxn.
@neauoire

#uxn @Devine Lu Linvega
in reply to Forth Computer

Devine Lu Linvega
Devine Lu Linvega
• •
no problem 😀 But to answer your question, if I had a uxn fpga, I'd make myself a little workstation, most of my day-to-day work is hosted on uxn, it might be nice to have it stand on its own like that.

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