Re: TI-H: Expanders?


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Re: TI-H: Expanders?




btw, who WOULD accept an idea that dumb AND impractical anyway?
But seriously, that's more work that just starting over, Grant...  and it's
accepted, not excepted.  just being a pain in your @$$...
CK

Mel Tsai wrote:

> >>I will be building (and selling) Expander IIs in a few weeks.  Bryan
> >>Rittmeyer will be selling chips for them if you want o build your own.  They
> >>work with the TI-92 right now, and should work with the TI-86 in a few
> >>weeks.  For more info, please e-mail me privately.
> >
> >Just like the EII was supposed to be out in a few weeks in february...  ;)
> >
> >>And yes, there is an expander (developed by Mel Tsai) that is already out
> >>there, but the source of memory chips dried up, so you can't really build
> >>one.
> >
> >You can build it, but both Bryan and Mel don't like the idea.  Its called
> >'Grants Not excepted Idea because its dumb and impracticle' expander.
> >Thats GNEIBIDAI Expander.  Its an AVR that emulates the ESF chip.
>
> The AVR simply isn't fast enough to do that, grant.  Can the AVR
> intelligibly respond to clock transitions every 1 microsecond?  Nope,
> not unless it was 50MHz.  The only way would be to slow the driver
> down by a LOT.
>
> -Mel




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