[rescue] sun 3/60 update

[Todd Vernon]

I buy a board if you do a run!  Pretty cool.

T

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Todd Vernon
Entrepreneur | Investor
Email: todd at toddvernon.com
LinkedIn: toddvernon
On May 21, 2025 at 1:00 AM -0600, Dan Moisa via rescue <rescue at sunhelp.org>, wrote:
> Hi folks!
>
> I've been working on a replica Sun 3/60 based on the online available schematics, and I finally can report some success! I have a board fully booting off network, this is what it looks like: http://www.whitebearcafe.com/img/PXL_20250521_060410660.MP.jpg
>
> I left out quite a few things because I had no confidence this was going to work; there were quite a few errors in the schematics. I ended up with:
> - only implementing the min required 4mb of RAM
> - left out the SCSI and Video sections
> - only put in the serial controller for A/B, left out the keyboard/mouse
> - TTL serial, I didn't implement full rs232 or modem support
> - left out the coax ethernet entirely
> - no FPU
>
> Everything else is there. I can boot with a regular boot prom image, pass all the diag tests, boot off the network and load a kernel.
>
> I'll upload the newest version to github and arrange some things better. If I make a new version the top of the wishlist is 4MB simms, not putting more RAM in from the start is my main regret.
>
> All the components were available off Digikey or eBay, with only one PAL slightly on the rare side.
>
> Dan.
>
> PS: I still don't know who runs https://www.sun3arc.org/ I'd love to buy them a beer or cake, that site was a lot of help. If they prefer to stay anonymous I'll donate to polar bears on behalf of the site's name or something.
> _______________________________________________
> rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
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