Re: A86: Re: EII

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Re: A86: Re: EII


Well, Mel knew full damn well he didn't want to do a second one even
before he started designing the E2 :) Something about these expanders
make you burn out after designing just one of them. ;) School is out,
the TI-86 driver is pretty close now that I got off my ass and actually
learned a few things, and I just figured out what was wrong with my
prototype.. I left the R\E\S\E\T\ (RESET with a line above it, for those
unfamiliar with schematic notation -- just means that its active low,
like the calc link port) and W\P\ lines floating. So the mem chip
was resetting mid transfer. Not a good thing :)

As we speak the soldering iron is heating up to build the final
breadboard prototype. I'm working on a PLCC32 module for WinBoard,
a PCB autorouting program... Once that's done I'll run the board
pattern through a neat AI autorouter and have an optiminal PCB design
done by the end of the week. Then its just a matter of getting a small
PCB run together, building a real prototype, doing any last minute
firmware revisions, and releasing the puppy.

By the way Grant, why do the ATmega chips clock at 6MHz? They look
pretty cool, but the clock speed is waaaaay too low. It seems every
time Atmel makes a better chip it has to slow the clock. ** Shrug **

For those of you still e-mailing me about the E2, there is a page
which should answer your questions. I think the URL is in my sig
below.

Perhaps we should move this conversation over to TI-H. Dan?

Bryan

Grant Stockly wrote:
> 
> >Well, thats life, sorry Grant. I don't know what you want me to say.
> >I'm not quite sure what you mean about AVR source. Mel never wrote
> >any kind of firmware for the AVR AFAIK and I ported the EuP PIC firmware
> >over to the AVR quite a while ago myself.
> >
> >You can port the driver yourself if you want, but you offered to do
> >that a very long time ago with no real result. I'm working on my
> >own 86 driver and its coming along very well. If you want to write
> >your own, thats perfectly fine with me. The only part of the project
> >I want to retain control over is the firmware, for obvious reasons.
> >Indeed, I plan on releasing at least 90% of the EII z80 and 68k driver
> >source as soon as the programmed AVRs start shipping.
> 
> And are you going to support it?  I'm just wondering if it will end up like
> what happened with mel...  I mean, you were getting tired with the project
> in february when you told me I might hand it over to me because of school.
> I myself have been waiting for the release so I can start building them.
> 
> Do you have an 85 driver?  All I need to do is a good catalog program, and
> UI.  Other than that its done...

-- 
Bryan Rittmeyer
mailto:bryanr@flash.net
http://www.bridges.edu/horizon/
References: