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Subject: Re: [geda-user] COSMAC ELF in gEDA and the power rail problem for
 logic ICs
To: geda-user AT delorie DOT com
References: <CANDNR8oD1XumuegoYJEAbpEEzK_XEjv0WZ_rtiwg4DwoxNfK-Q AT mail DOT gmail DOT com>
From: "Dave McGuire (mcguire AT neurotica DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Message-ID: <b99e6074-9ba6-94dc-90d7-e1c809de9e41@neurotica.com>
Date: Mon, 24 Oct 2016 09:39:18 -0400
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On 10/23/2016 10:24 PM, Atommann (atommann AT gmail DOT com) [via
geda-user AT delorie DOT com] wrote:
> Recently I redraw[1] the cosmac elf microcomputer which was from the
> Popular Electronics magazine 1976 August issue. And soldered one[2],
> it works right away!

  Hi!  I don't have any suggestions for your problem, but I just have to
speak up about the Elf.  It's great that you did this. :-)  I have
designed a few Elf variants (one with TTL, one with no displays in a
very small board, etc) with gschem/PCB over the years.  I haven't gotten
around to actually building any due to time constraints, paying work
etc...familiar story I'm sure.  But I have a Spare Time Gizmos Elf2K in
a nice full-blown configuration.  They're really fun little systems,
especially with a CF card and ElfOS.

  I think a lot of folks here would enjoy these machines, especially
fans of minimalism.  It's a refreshing vacation from multicore embedded
CPUs with tons of RAM etc.

              -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA