[rescue] SS10SX Value

[Todd Vernon]

The vsim alone is worth that.  Just sayin

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Todd Vernon
Entrepreneur | Investor
Email: todd at toddvernon.com
LinkedIn: toddvernon
On Jun 16, 2026 at 6:46 PM -0600, Lionel Peterson via rescue <rescue at sunhelp.org>, wrote:
> That was my recollection, that the VSIMM was a complete "connector-less" video framebuffer, not just memory to augment an already on-board video framebuffer.
>
> There wasn't interest in making an alternative 3rd-party VSIMM when SS10SX and SS20SX machines were in production, likely due to the niche place such systems occupied - high-end (for the time) desktops/workstations before UltraSPARC desktops came and took over that niche with UPA graphic options.
>
> Anyway, that's what I recall from the sidelines, I only really had hands-on experience with Ultra 2 systems and IPC/IPX/LX essentially as X Terminals for desktop use.
>
> Ken
>
> > On Jun 16, 2026, at 19:15, foo bar via rescue <rescue at sunhelp.org> wrote:
> >
> > On Tue, Jun 16, 2026 at 2:55 PM Mouse via rescue <rescue at sunhelp.org> wrote:
> > > >
> > > > >> Yes, it is an SS10 with a 4 MB VSIMM. They are rare, so [...]
> > > >
> > > > Not only rare; 4MB VSIMMs are useful. Some people - me, if I weren't
> > > > in a "shedding hardware" phase - would buy it for that alone.
> >
> > The SS10SX uses different VSIMMs from the SS20. ( 70ns VRAM vs. 60ns VRAM )
> >
> > > > I'm actually somewhat surprised nobody has produced an aftermarket
> > > > VSIMM by now; I would think recent tech would make it easy, but perhaps
> > > > there are issues I know nothing about.
> >
> > Nobody has made an aftermarket VSIMM because it's not a VSIMM, it is
> > literally an entire video card on a memory stick. It has the graphics
> > chip, the RAMDAC, the clock generator, and a DMA engine. The VSIMM
> > outputs analog video and clock pulses.
> >
> > _______________________________________________
> > rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
>
> _______________________________________________
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