Forums

Hmm. So did you spot the deliberate mistake, anyone? :-)

Stupidly I got the Vcc and Ground lines of the 4040 chips mixed up on the schematic. Here's the corrected version:

The ZIP file now also contains the corrected diagram.

Sorry about that.

Mike

Great, great job Mike! Its look likes so simple even me will try to
build one in the future :) BTW, if you can read from the parallel port to
the reader, there is no way to make some kind of adaptation to connect the
reader to a sms and upload the rom from the parallel port to the sms? :)

Quote

> Hmm. So did you spot the deliberate mistake, anyone? :-)

> Stupidly I got the Vcc and Ground lines of the 4040 chips mixed up on the schematic. Here's the corrected version:

>

> The ZIP file now also contains the corrected diagram.

> Sorry about that.

> Mike

Quote

> Great, great job Mike! Its look likes so simple even me will try to
> build one in the future :) BTW, if you can read from the parallel port to
> the reader, there is no way to make some kind of adaptation to connect the
> reader to a sms and upload the rom from the parallel port to the sms? :)

heh.
someday there'll be a 'live' devcart... someday....
it would of course involve SRAM and another heap of logic chips, all out of my field of expertise...

Quote

> > Great, great job Mike! Its look likes so simple even me will try to
> > build one in the future :) BTW, if you can read from the parallel port to
> > the reader, there is no way to make some kind of adaptation to connect the
> > reader to a sms and upload the rom from the parallel port to the sms? :)

> heh.
> someday there'll be a 'live' devcart... someday....
> it would of course involve SRAM and another heap of logic chips, all out of my field of expertise...

someday soon i think. the idea is very simple and doesn't require all that many chips. the only question is whether it's
practical to have the SMS near your PC.

a s out.

Quote

> someday soon i think. the idea is very simple and doesn't require all that many chips. the only question is whether it's
> practical to have the SMS near your PC.

I'll damn well make it practical.

Would it require a lot more circuitry to have the sram be battery powered, so one could program the cart through the parellel port, and then bring it over and plug it in to the SMS?

Author	Message
Mike G Joined: 21 Apr 2000 Posts: 598 Location: Newcastle upon Tyne, England	CORRECTION - SMSReader schematic Posted: Mon Sep 25, 2000 9:27 pm
	Hmm. So did you spot the deliberate mistake, anyone? :-) Stupidly I got the Vcc and Ground lines of the 4040 chips mixed up on the schematic. Here's the corrected version: The ZIP file now also contains the corrected diagram. Sorry about that. Mike

PrOfUnD Darkness Joined: 29 Jun 1999 Posts: 383 Location: Brazil	A question Posted: Wed Sep 27, 2000 1:40 pm
	Great, great job Mike! Its look likes so simple even me will try to build one in the future :) BTW, if you can read from the parallel port to the reader, there is no way to make some kind of adaptation to connect the reader to a sms and upload the rom from the parallel port to the sms? :) Quote > Hmm. So did you spot the deliberate mistake, anyone? :-) > Stupidly I got the Vcc and Ground lines of the 4040 chips mixed up on the schematic. Here's the corrected version: > > The ZIP file now also contains the corrected diagram. > Sorry about that. > Mike

Heliophobe Site Admin Joined: 25 Oct 1999 Posts: 2029 Location: Monterey, California	Re: A question Posted: Wed Sep 27, 2000 4:36 pm
	Quote > Great, great job Mike! Its look likes so simple even me will try to > build one in the future :) BTW, if you can read from the parallel port to > the reader, there is no way to make some kind of adaptation to connect the > reader to a sms and upload the rom from the parallel port to the sms? :) heh. someday there'll be a 'live' devcart... someday.... it would of course involve SRAM and another heap of logic chips, all out of my field of expertise...

asynchronous Joined: 14 Aug 2000 Posts: 742 Location: Adelaide, Australia	Re: An answer? Posted: Fri Sep 29, 2000 4:30 am
	Quote > > Great, great job Mike! Its look likes so simple even me will try to > > build one in the future :) BTW, if you can read from the parallel port to > > the reader, there is no way to make some kind of adaptation to connect the > > reader to a sms and upload the rom from the parallel port to the sms? :) > heh. > someday there'll be a 'live' devcart... someday.... > it would of course involve SRAM and another heap of logic chips, all out of my field of expertise... someday soon i think. the idea is very simple and doesn't require all that many chips. the only question is whether it's practical to have the SMS near your PC. a s out.

Heliophobe Site Admin Joined: 25 Oct 1999 Posts: 2029 Location: Monterey, California	Re: An answer? Posted: Fri Sep 29, 2000 5:23 pm
	Quote > someday soon i think. the idea is very simple and doesn't require all that many chips. the only question is whether it's > practical to have the SMS near your PC. I'll damn well make it practical. Would it require a lot more circuitry to have the sram be battery powered, so one could program the cart through the parellel port, and then bring it over and plug it in to the SMS?

Forums

View topic - CORRECTION - SMSReader schematic