Re: TI-H: A few questions...
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Re: TI-H: A few questions...
> Some of you may remember me from earlier months...I left, because I was
> getting sick of all the messages I got each day. But I'm getting back on
> for a little bit, while I ask you guys a few questions.
Cool!!!
First, where do I
> find processors comparable to the Z80? Or can I get a programmable Z80? I
> know Atmel makes AVR's, but it doesn't look like you can program very much
> onto them.
DigiKey has the Z8 microcontroler, which is made by Zilog (same company
that makes Z80. These may be similar. Call them up and ask for a catalog
if you don't have one (1-800-344-4539)
Also, where do I find memory chips? I've found some really
> small capacity ones, but I heard someone a long time ago saying something
> about a 40 M chip that fit in an 83? I hesitate to say names, because it's
> been so long, but I think it was Grant. Where would I come up with such
> chips?
Well, Marshal has chips from many companies and DigiKey may have some
small ones.
I think that 40 Meg one is a future technology using new material, or
maybe it's like those flash cards. I realy don't know.
I guess I have another question, while I'm at it. How would I
> attach an external ROM or RAM to a processor to be used as a primary memory
> source? It would have a "switch" of one kind or another, but how would I do
> that? I'm not working on a calculator project, but you guys have more
> resources than me on such things
Umm??? Huh, how fun! (=
Actualy, If you set the ROM and RAM piggy backed, it might work. you
have to have a switch to cut power from one set or the other. I don't
know how well it would work. Maybe it will be fine.
Try!
Just don't ruin anything expensive! (=
--
Richard Piotter
richfile@prairie.lakes.com
The Richfiles TI Hardware and BASIC web page:
http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html
References: