> > > I/O
> > > was a Lear
> > > Siegler ADM-1 CRT terminal ($1,200).
> >
> > Wow! I bought this terminal for $10 (a decade+ ago) to use as a
> > temporary
> > test device. I had wondered what it cost when new...
> >
> > I gave it away.
> >
>
>         You ever look inside one of those things?

My cell phone might be the ONLY thing that I have not looked inside. (!) The
inside of the LS was a marvel in gate-level design. The video generation
circuits were worth a study. I wonder if anybody could copy the design into
a xilinx and run it from there. It'd make an interesting demo to show the
16" by 20" PCB reduced to a single 44 pin chip.




> A huge
> board with little 14
> and 16 pin small scale chips. I think the biggest chip on it
> was a 40 pin
> UART. I had the service manual on it.

A service manual would have been great to have...


> They had built their
> own processor
> out of all these small scale chips, then executed code to make it a
> terminal.  The stuff people went through before microprocessors!!!
>
> Harold
>

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