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jrogers_ppl
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Re: 74x ? We do....
jrogers_ppl   4/13/2014 7:48:04 PM
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@tom-ii :

 

Sorry your schematic is lost. Thank you for looking, nonetheless :)

jdr

tom-ii
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Re: 74x ? We do....
tom-ii   4/13/2014 7:04:57 PM
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Update:

 

Took a look in the only places it might be..  It appears to be lost to the annals of time.  Interesting thought, though,, maybe someday I'll rebuild it on an FPGA...

tom-ii
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Re: 74x ? We do....
tom-ii   4/13/2014 6:53:45 PM
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Oh, holy cow.  That was a long time ago.  I'll take a look, but I won't hold much of a whisper of hope...

jrogers_ppl
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Re: 74x ? We do....
jrogers_ppl   4/13/2014 4:57:47 PM
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@tom-ii :

>
I once built a 4-bit CPU from 7400 logic on a few breadboards - it had a whopping 256B of RAM!

<

 

Could you post schematics somewhere?  I can't be the only one that would be intrigued by something like this.

 

tom-ii
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Re: 74x ? We do....
tom-ii   3/17/2014 3:19:38 PM
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@Alvie:

Neato!


I once built a 4-bit CPU from 7400 logic on a few breadboards - it had a whopping 256B of RAM!

Alvie
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74x ? We do....
Alvie   3/17/2014 2:59:24 PM
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build the circuit using 74LS-series logic. (Does anyone still do this?)

I guess sometimes we do it, even if for just plain saudosism :)

Here's something I came up for the 2011 7400 competition :

http://alvie.com/7400contest/

The contest is (was?) organized by Dangerous Prototypes, and many interesting stuff has popped up in 2011 and 2012. There was no contest in 2013 as far as I know, perhaps this year.

It was so fun...

Alvie

tom-ii
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Re: Pointing the finger of blame
tom-ii   3/17/2014 2:18:12 PM
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...  but of course!

Max The Magnificent
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Pointing the finger of blame
Max The Magnificent   3/17/2014 1:54:14 PM
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@Tom-ii: ...but the most gloriously Magnificent Max suggested that I write something out and present it to the EE Times universe for your amusement.

Oh, so now it's my fault! LOL



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