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Other US Areas Looking for RCA Cosmac 1802 devices

Covers the non-continental US, including Alaska, Haiwaii, Puerto Rico and other territories.
mountainking

mountainking

Experienced Member
Joined
Jul 19, 2022
Messages
167
Location
Philadelphia
Hi,

I have a deep fondness for the RCA 1802 microprocessor along with their other 1800 series ics, but what I daydream about owning are the various RCA Cosmac trainers and devices such as:

Microtutor II
Evaluation Kit
Microterminal
Micromonitor
Development System
VIP
Microboard
Microkit

There's probably some more I'm forgetting about but you get it ;)

If you have any of these devices and would be interested in selling them please message me with what you have and the price you are looking to get.

Thank you,
Alan
 
As a result of the EVK manual being offered I checked on eBay and was surprised so see quite a few processor chips. Some were from the US but there were many from China too.
 
…and I found a guy in Thailand selling what is apparently a modern version of the EVK.
www.ebay.com

CDP1802 Microprocessor Kit | eBay

I designed this kit from the suggestion by Leonard Rose. The CDP1802 Microprocessor is very interesting CPU. I spent a month to develop it. The first try PCB was working very good. The kit runs with Xtal 3.6864MHz using the on chip oscillator.
www.ebay.com
 
gwiley said:
As a result of the EVK manual being offered I checked on eBay and was surprised so see quite a few processor chips. Some were from the US but there were many from China too.
Click to expand...
Yes, there are still plenty of chips still out there, most were made in China/Asia so those sellers has stock piles of them.
 
gwiley said:
…and I found a guy in Thailand selling what is apparently a modern version of the EVK.
www.ebay.com

CDP1802 Microprocessor Kit | eBay

I designed this kit from the suggestion by Leonard Rose. The CDP1802 Microprocessor is very interesting CPU. I spent a month to develop it. The first try PCB was working very good. The kit runs with Xtal 3.6864MHz using the on chip oscillator.
www.ebay.com
Click to expand...
Yep, there are a handful of sellers selling those same trainers, though I don't think they are same design as the Cosmac Evaluation kit, they just use the same cpu. I'm just interested in the vintage trainers though.
 
There was a guy on ebay a few years ago who had DEEP pockets who bought up just about every piece of ELF kit that appeared.
 
NeXT said:
There was a guy on ebay a few years ago who had DEEP pockets who bought up just about every piece of ELF kit that appeared.
Click to expand...
Hm, I guess that's why I've never seen an Elf listed on ebay, lol, though since they are all homebrew they are less likely to come up for sale, most home brew stuff has sadly ended up in the trash. I do see other RCA Cosmac boards and devices come up for sale but the prices are generally ridiculous. There are a couple pieces on ebay now that I am contemplating purchasing if I can get the price down to something reasonable, I just sold a piece from my collection and I never sell a piece without replacing it with something that I want more.
 
mountainking said:
Hm, I guess that's why I've never seen an Elf listed on ebay, lol, though since they are all homebrew they are less likely to come up for sale, most home brew stuff has sadly ended up in the trash. I do see other RCA Cosmac boards and devices come up for sale but the prices are generally ridiculous. There are a couple pieces on ebay now that I am contemplating purchasing if I can get the price down to something reasonable, I just sold a piece from my collection and I never sell a piece without replacing it with something that I want more.
Click to expand...
Hi,

That's because women usually don't get into the hobby and when their husband hobbyist/collector dies, they figure the home brew computer is worthless and toss them.
.
 
wperko said:
Hi,

That's because women usually don't get into the hobby and when their husband hobbyist/collector dies, they figure the home brew computer is worthless and toss them.
.
Click to expand...
Jeez....don't blame it on the wives 🤦🏻. First of all, it's not usually the wife that goes through the husband's possessions, it's usually their children, and if it is the wife she, more so than even the children, would be the one who knows what the items are or at least knows that they were something important to the husband. Homebrew pieces gets tossed because they are just that, something that some hobbyist built and likely only worth something to the person who built them, and really they usually AREN'T worth anything of any significance accept to the builder or a fellow builder/hobbyist. I have a small handful of vintage homebrew micro based pieces (that someone other than myself built) which I cherish, but none of them cost much at all (and they came from ebay auctions) because sadly even those who are into the vintage computing scene/hobby don't care about homebrew stuff unless it's something known and popular (ie hip and "cool") like an ELF or TVT or similar.
 
mountainking said:
Jeez....don't blame it on the wives 🤦🏻. First of all, it's not usually the wife that goes through the husband's possessions, it's usually their children, and if it is the wife she, more so than even the children, would be the one who knows what the items are or at least knows that they were something important to the husband. Homebrew pieces gets tossed because they are just that, something that some hobbyist built and likely only worth something to the person who built them, and really they usually AREN'T worth anything of any significance accept to the builder or a fellow builder/hobbyist. I have a small handful of vintage homebrew micro based pieces (that someone other than myself built) which I cherish, but none of them cost much at all (and they came from ebay auctions) because sadly even those who are into the vintage computing scene/hobby don't care about homebrew stuff unless it's something known and popular (ie hip and "cool") like an ELF or TVT or similar.
Click to expand...

Hi,

You are somewhat correct ... it's both the wives and kids. I see widows posting stuff for sale and when I ask about other stuff, they mostly say they just tossed it, thinking the commercial products were the only things with any value to anybody else.

It's sad, and worse is that in the past a lot of the electronics "junk" was sent to China where we buy it as vintage components on eBay, now China doesn't want so much of it anymore so probably more of it is going into landfills now.


.
 
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