[rescue] sun 3/60 update

[Mouse]

>> I've been working on a replica Sun 3/60 [...]

I'm impressed.  Just...wow.

Are you trying to recreate a vintage machine, or are you just trying to
run Sun-3 software?  The image appears to show vintage SIMMs, and you
mention using a PAL, leading me to suspect the former.

This leads me to some thoughts.

My first reaction is that I'd be fine with less-vintage hardware, such
as modern RAM, as long as it looks the same to the CPU.  Or a
SCSI-to-SATA bridge to put modern disk on it.  (That's how my main
SS20's disk is connected right now, albeit with the bridge behind a
physical SCSI bus rather than onboard.)

But, carried to its logical conclusion, that leads to just running an
emulator on something modern, like a Pi.

And I can't help feeling that doing that is missing something.  (Not
that that is necessarily a reason to avoid doing it.  I've got a VAX on
my house network right now which is entirely emulated.)  I guess I'm
searching for the boundary between "that's just an improvement tweak to
a still-classic machine" and "that's cheating", though I suspect that
boundary is at least fuzzy and may even have negative width.)

I'm sure there are almost as many answers as there are people on the
list, but...anyone have any thoughts to share on this?

I find it provocative to compare this with a report I saw a while back
from someone who built a VAX in an FPGA.

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