Re: TI-H: Expanders?


[Prev][Next][Index][Thread]

Re: TI-H: Expanders?




>>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


Follow-Ups: References: