[rescue] Looking for broken IPX system board or chips

[Dave McGuire]

   That is great to know, thanks for the info!

             -Dave

On 1/4/25 11:43, Ethan Hawke via rescue wrote:
> The contexts are part of the MMU+ chip, not the IU+FPU. Even then, the 
> chip is the same in the SS2/IPX, just configured differently. I'm 
> confident the CPUs are interchangeable.
> 
> -Ethan
> 
> 
> On 5 January 2025 3:27:16 am AEDT, Dave McGuire via rescue 
> <rescue at sunhelp.org> wrote:
> 
> 
>     Are you certain the pinout etc is the same? I'd definitely not risk
>     it without hard info like datasheets or a schematic.
> 
>     I think if one could drop a 16-context SS2 IU into an IPX, a lot of
>     us would've done it back in the day, but it's not something I've
>     ever heard of.
> 
>     -Dave
> 
>     On 1/4/25 11:18, Ethan Hawke via rescue wrote:
> 
>         There were several compatible CPUs shared among the SS2/IPX
>         systems (LSI, Cypress, Fujitsu and Weitek), the IPX had a
>         slightly downgraded MMU (8 contexts vs 16) but is more or less
>         the same, there shouldn't be any issue swapping CPUs between them.
> 
>         -Ethan
> 
> 
>         On 5 January 2025 2:42:39 am AEDT, Dave McGuire via rescue
>         <rescue at sunhelp.org> wrote:
> 
> 
>         The SS2 and the IPX do not use the same CPU.
> 
>         -Dave
> 
>         On January 4, 2025 9:57:22 AM Todd Vernon via rescue
>         <rescue at sunhelp.org> wrote:
> 
>         I believe I have a spare SS2 board I bought just to harvest a
>         PowerUp CPU from and I have the CPU from another SS2 that I put
>         PowerUp chip into. Not sure they are same as the IPX.
> 
>         If you determine they are I could sell you that bundle. Let me know.
> 
>         -t
>         ------------------------------------------------------------------------
>         Todd Vernon
>         Entrepreneur | Investor
>         Email: todd at toddvernon.com
>         LinkedIn: toddvernon
>         On Jan 4, 2025 at 5:30 AM -0700, Michael Dombrowski via rescue
>         <rescue at sunhelp.org>, wrote:
> 
>         I gambled and lost on an IPX with a low buy-it-now price:
>         the three main chips (GPU, Sparc, cache) have all been
>         pulled and I assume sold for $0.25 of gold. The rest of the
>         system seems to be in decent shape and I'm loath to just
>         throw this away. Anyone happen to have these three chips, or
>         more likely, an otherwise broken IPX system board that I
>         could harvest them from?
> 
>         mike
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> 
> 
>         --
>         Dave McGuire, AK4HZ
>         New Kensington, PA
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-- 
Dave McGuire, AK4HZ
New Kensington, PA