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AMSAT P3b IHU

(4)
... We'll see what the AMSAT folks have to say. It certainly isn't one of a kind, since all of the software developers for the IHU had one but that is still a
thinkpast
4
posts
Jun 26

New file uploaded to cosmacelf

(389)
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 :
cosmacelf@yahoogroups.com
389
posts
Jun 25

Photos of Netronics Boards Wanted

(9)
That’d be great, thanks! Dave ... That’d be great, thanks! Dave On Jun 24, 2015, at 8:26 AM, Robert DiPippo bobk1wyc@verizon.net [cosmacelf]
Dave Ruske
9
posts
Jun 24

Space War & Flip Games from Joseph Weisbecker

(16)
Hi Paul, Really? I didn't know you couldn't upload to my folder... it makes sense I guess, but it's not by my doing. I would happily share my folder with
joshbensadon
16
posts
Jun 19

PIXIE: CDP1861 vs. prerelease TA10171X

(3)
... That was my point. ... Their circuit should drive a 75 ohm monitor, unlike the Netronics ELF II, and it does save components compared to my circuit, but it
jdripper
3
posts
Jun 18

Emma 02 V1.20

(6)
Improved Studio 2 sound .... you mean you hit the console with a clawhammer .... Why anyone thought games would be advanced by a sound chip that can only
paul31415926536
6
posts
Jun 8

MOPAR and the 1802

(36)
Forgot the link to the shop: http://www.aliexpress.com/store/group/tin-box-plain-tin-box/713943_100145208.html Should also mention these:
Huggbävern
36
posts
May 31

STG Elk 2K Monitor V88

(3)
Thanks! Exactly what I was looking for. - Gary
garyekaufman
3
posts
May 24

Where order CDP1802 chip

(3)
Hi Carlitos, Well, you definitely came to the right group.... I believe I have about 20 or 30 chips on hand. but Lee should have much more than me. I'm sure
joshbensadon
3
posts
May 21

Calling subroutines inside an interrupt routine

(7)
Thanks to the "Ideas Book" (RCA Europe) I got this working! I modified/expanded it to work with the 1877 PIC. The code is attached. It basically uses R7 to do
mark.bielman
7
posts
May 15

cdp1877 Priority Interrupt Controller

(18)
... There's an interesting technique that I saw used on a Godbout S-100 card with the 8080 CPU. It adds a memory chip that is used exclusively for the
Lee Hart
18
posts
May 11

OTish S-100 Back Plane

(10)
Lee is being humble, in his descriptions of the IDIOT monitor. It took me time to appreciate it. First, it's relocatable - no long jumps - so the 512-byte
thinkpast
10
posts
May 8

VCF-East 10.0 and COSMAC

(7)
Lee suggested old bipolar PROMS with narrow packages. But, they are often low capacity, 256 bytes or less; programmers are nonexistent (you essentially blow
thinkpast
7
posts
May 6
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