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Latching a TIL311 and the Elf

(8)
The wiring guide and templates for the VCF-Elf look really helpful. But I don't want to wire up an Elf without really understanding how it works at a component
Martin Heermance
8
posts
6:05 PM

Introduction and VCF-Elf Expansion Header Question

(12)
... It's weak on purpose. When you're building a crystal oscillator, you don't want a sharp square wave with fast rise/fall times going into the
Lee Hart
12
posts
May 23

Boyd Board - any interest?

(7)
I'm happy to be identifed. Haven't built it yet....hopefully soon. Jon
jon
7
posts
May 22

1806 speed question

(36)
Mark wrote: Let me correct my previous statement concerning 1806 temperatures, as I should have been more attentive to what the micro was actually doing when I
fps16xn3
36
posts
May 22

Original ELF documentation package

(35)
I will ask them to do so.... From: cosmacelf@yahoogroups.com [mailto:cosmacelf@yahoogroups.com] Sent: Sunday, May 21, 2017 7:41 PM To:
Paul Schmidt
35
posts
May 21

New file uploaded to cosmacelf

(496)
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the cosmacelf group. File : /Mark
cosmacelf@yahoogroups.com
496
posts
May 20

High standby current 1802 Membership Card

(20)
As I read this i'm remembering that the original REV of the MC had a circuit that enabled the RAM as little as possible (maybe only in TPB?). Does that still
bill rowe
20
posts
May 16

IO extension using CDP1853 sub-circuit and !MRD

(25)
Mark wrote: To answer Josh, yes, memory-mapped I/O is always easier to implement. As long as you don't mind it taking up a slot in your address space. However,
thinkpast
25
posts
May 12

The Edukit

(14)
Go to the forum, look in Photos > Albums > EDUKIT, or click this link: https://groups.yahoo.com/neo/groups/cosmacelf/photos/albums/370764515
Dave Ruske
14
posts
May 11

folder?

(9)
OK sure, you can delete it. :) I'll remake it as soon as it's gone. On Wed, May 10, 2017 at 3:42 PM, Dave Ruske dave@ruske.com [cosmacelf]
Mark Abene
9
posts
May 10

COMX-35 repair help

(11)
Any 32K SRAM in the 28 pin package will do fine. I don't know or paid attention to which mfg I use. I have a dozen of these chips from various sources and
joshbensadon
11
posts
May 8

Introducing my Cosmas Elf

(14)
What about the music program in Popular Electronics where the ELF plays "Simon and Garfunkal, Feeling Groovy".
joshbensadon
14
posts
May 5

schematic library for 18xx parts...

(7)
Thanks! Simple and to the point. Last night during my extensive time searching, I found a library (diy_rcl) that contains quite a number of symbols in a style
Mark Abene
7
posts
May 3

IDIOT on my ELPH

(10)
On May 2, 2017 22:33, "bill rowe bill_rowe_ottawa@hotmail.com [cosmacelf]" < cosmacelf@yahoogroups.com> wrote: That's pretty interesting. Can you get it to
Cristian Arezzini
10
posts
May 2

Introducing my ELPH

(14)
Regarding a discussion of /EF3 polling: http://www.retrotechnology.com/memship/mem_revI.html#engineering
thinkpast
14
posts
Apr 27
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