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Re: It's long overdue - Cosmac Elf II build
Posted: 06 Jun 2026 07:28
by rubber_jonnie
Out of curiosity I hooked up my little 5" CRT TV to the Elf to see if it was any different, and it is:
- IMG20260605134402.jpg (198.82 KiB) Viewed 656 times
So no rolling/flickering, but I think perhaps that there is some software setup needed. Need to do some more reading.
Annoyingly the DIP for the thru hole version is still not here :(
EDIT - I have gone through the build docs and found a video test which I'll try later :)
Re: It's long overdue - Cosmac Elf II build
Posted: 06 Jun 2026 10:15
by rubber_jonnie
OK so the video test made no difference, I really think I need to get that DIP IC to complete the through hole board done as it is easier to build and easier to troubleshoot, so lets hope it arrives today.
Re: It's long overdue - Cosmac Elf II build
Posted: 07 Jun 2026 05:50
by HigashiJun
The most frustrating part of all projects: waiting for parts to arrive...
:(
Re: It's long overdue - Cosmac Elf II build
Posted: 07 Jun 2026 09:27
by rubber_jonnie
HigashiJun wrote: 07 Jun 2026 05:50
The most frustrating part of all projects: waiting for parts to arrive...
:(
Especially since the IC didn't arrive...
I might order from somebody else just to cover all bases.
Re: It's long overdue - Cosmac Elf II build
Posted: 07 Jun 2026 10:41
by HigashiJun
rubber_jonnie wrote: 07 Jun 2026 09:27
Especially since the IC didn't arrive...
Ah, bummer...
Re: It's long overdue - Cosmac Elf II build
Posted: 07 Jun 2026 14:04
by rubber_jonnie
HigashiJun wrote: 07 Jun 2026 10:41
rubber_jonnie wrote: 07 Jun 2026 09:27
Especially since the IC didn't arrive...
Ah, bummer...
I've ordered another from elswhere. Bit annoying as the original one was ordered from a trusted seller on eBay. Had a couple lately where trusted sellers have failed badly.
Re: It's long overdue - Cosmac Elf II build
Posted: 08 Jun 2026 01:23
by HigashiJun
rubber_jonnie wrote: 07 Jun 2026 14:04
Had a couple lately where trusted sellers have failed badly.
Never happened to me yet, touch wood...
Re: It's long overdue - Cosmac Elf II build
Posted: 08 Jun 2026 09:22
by rubber_jonnie
HigashiJun wrote: 08 Jun 2026 01:23
rubber_jonnie wrote: 07 Jun 2026 14:04
Had a couple lately where trusted sellers have failed badly.
Never happened to me yet, touch wood...
Fingers crossed 🤞
It's annoying as I've built up quite a few decent eBay sellers, so to start losing some is not really what I want.
Re: It's long overdue - Cosmac Elf II build
Posted: 08 Jun 2026 09:57
by HigashiJun
rubber_jonnie wrote: 08 Jun 2026 09:22
It's annoying as I've built up quite a few decent eBay sellers, so to start losing some is not really what I want.
I do agree, it's really annoying.
:(
Re: It's long overdue - Cosmac Elf II build
Posted: 08 Jun 2026 10:40
by rubber_jonnie
HigashiJun wrote: 08 Jun 2026 09:57
rubber_jonnie wrote: 08 Jun 2026 09:22
It's annoying as I've built up quite a few decent eBay sellers, so to start losing some is not really what I want.
I do agree, it's really annoying.
:(
Aaaand, it just arrived!!! It took 2 weeks, which is really quite a long time. I'll be interested to see how quickly the other one I ordered takes to arrive.
Also some good news:
- IMG20260608102022.jpg (336.09 KiB) Viewed 574 times
The thru hole CDP 1861 is now complete!!!
And it works!!!
- IMG20260608101930.jpg (307.79 KiB) Viewed 574 times
This is essentially an image showing the contents of RAM, just a simple test program - 61, 69 entered at locations 00 and 01 and that is run, but it is a good video signal. At least I know what the SMD version should look like.
Hopefully I can get the SMD version working now I know what to expect.