<div dir="ltr">Will trade boards for schematics and source code :)<div><br></div><div>But yeah anyone is welcome to one of those for the cost of parts, we'll figure something out. Putting the BOM together is a PITA because about 40% of the components are not on Digikey/Mouser so it's not one-click uploading a spreadsheet, you have to chase down sellers. It will get easier in a subsequent version if I sub out some of the rarer stuff.</div><div><br></div><div>Ethernet is indeed there, Mouse is right you just need a period-appropriate centercom or equivalent AUI-to-10baseT transceiver. You can't pay me to implement the coax section and the crazy analog switches or dozen of R/C components all with values that haven't been made for years that it needs.</div><div><br></div><div>Mouse, keyboard and SCSI (with 50-pin connector so you can easily connect an emulator) are likely not going to be a problem. The board size will increase by about 20% with SCSI alone. A lot of effort was put into DMA between network/SCSI/RAM, mediated by the 0-wait-state MMU, with different data sizes (8/16/32 bits). That is what made those computers really good workstations.</div><div><br></div><div>Video will be a weird one, I'd really like to get the schematics for the P4-based color CG6. Otherwise I'll implement the onboard BW framebuffer and modernize it to work on VGA instead of ECL, but it's like putting astroturf in the mansion :( At that point there's a question of whether this stays as a single-board-computer. If the P4 CG6 (which of course is different from the 3/80 version) was less of unobtanium, I'd just implement the P4 bus and be home free.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 21, 2025 at 9:17 PM Mouse via rescue <<a href="mailto:rescue@sunhelp.org" target="_blank">rescue@sunhelp.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">> I=E2=80=99d love to see the ethernet, video, keyboard and mouse back,<br>
> so that it can be a fully functional workstation [...]. That would<br>
> make the very low availability of the sun3 machines somewhat less of<br>
> a problem for someone who wants to get started.<br>
<br>
It would at that!<br>
<br>
> And I=E2=80=99d second the suggestion to skip 30 pin SIMMs and use 72<br>
> pin SIMMs instead. They are much easier to get in larger sizes.<br>
> And, I=E2=80=99d bet that 72 pin SIMM sockets are easier to get, as<br>
> well.<br>
<br>
But don't forget that this was built to not the functionality but the<br>
*schematics* of the original -3/60. Switching from 30-pin to 72-pin<br>
SIMMs would entail a redesign - a rather partial redesign probably but<br>
still a redesign. I don't know enough about memory buses to know how<br>
big a redesign it would be....<br>
<br>
I too would like to see video, keyboard, and mouse. (The Ethernet is<br>
already there, provided you don't insist on thinnet - it was<br>
specifically *co-ax* Ethernet which was called out as omitted, and the<br>
picture shows an AUI-to-10baseT microtransceiver, so it presumably has,<br>
like the original, AUI Ethernet.) But I'm not doing the work, so what<br>
I'd like to see is at most a peanut-gallery comment.<br>
<br>
I'd also like to see the 24M cap on RAM lifted. But I don't know how<br>
feasible that would be, and, while NetBSD either understands or can be<br>
made to understand a >24M -3/60, SunOS might not get along with it.<br>
(Are there any other OSes that run on the -3/60?)<br>
<br>
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</blockquote></div>