Update, I was successful at replicating Adrian Black's success on the Mac Classic and then repeated the process on the even easier route for a Macintosh Plus.
To top it off, I got a powered, cheap HDMI splitter and a HDMI capture USB stick, so I can stream truly olden gems (think 1984-1985) on the internet! Some of these games run in emulators, but not with 100% accurate sound (a prime example of this is Archon which does a lot of wizardry with direct programming of the sound buffer, I suspect, as opposed to just playing a snd resource like was standard a few years later).

I started my own channel to share these black and white games and more here, 1Bit Fever Dreams: https://www.youtube.com/channel/UC9YYXWX1SxBhh1YB-feIPPw.

Here is the setup shown in action in a YT short: https://youtube.com/shorts/DwQafL_6ghA?feature=share

Well.. i got the Picture issue fixed.

But my Picture is rolling vertical.
Any Ideas ?

The Card is a ATI CGA/HGC Card from a Commodore PC.

matze79, what did you do to fix the picture ?

Made new Cable, and soldered new Xilinx

Somehow it always says no Sync.

rolling screen would indicate some vsync issue.

Indeed, strange Output.

If i set the Card to HGC and hockup HGC Monitor the Picture is also rolling.

Composite is fine on TV Set.

very odd indeed.
If i read the graph correctly, it would imply you're getting pulses of around 250~333 ns ( 4 - 3 MHz) on your vsync. That's way beyond spec for a simple HGC adapter/monitor 😏

Genoa EGA works fine 👍

Is anyone currently selling these fully/mostly assembled? I've recently resurrected 3 IBM 5150s with various video cards (ATI EGA Wonder 800+, IBM CGA, Paradise CGA, and a couple of mystery monochrome cards), and will be working on a Tandy 4000 next. The old monitors have seen better days, so I'm looking for a relatively inexpensive way to use the many flat-screens hiding around the house with these machines. TIA.

dmuntz wrote on 2022-05-10, 10:53:

Is anyone currently selling these fully/mostly assembled? I've recently resurrected 3 IBM 5150s with various video cards (ATI EGA Wonder 800+, IBM CGA, Paradise CGA, and a couple of mystery monochrome cards), and will be working on a Tandy 4000 next. The old monitors have seen better days, so I'm looking for a relatively inexpensive way to use the many flat-screens hiding around the house with these machines. TIA.

Look for seller "marminsky" on eBay, he has them in stock every once in a while, or maybe when you ask him. Item is called "Video Converter RGBI to HDMI/DVI - IBM 5150 5160 XT 5170 (MDA/CGA/EGA) to HDMI" in his list of items, at least mine was.

EDIT: Found this link on the project homepage which lists some additional sellers: https://github.com/IanSB/RGBtoHDMI/wiki/Assem … boards-for-sale

I ordered one of these and it arrived today. What a fantastic device. I'm testing it with a CGA card for starters, but I have MDA and EGA cards to try too - which I've never been able to try because I don't have the CRTs. Out of the box, all I had to do was set the correct input profile (from the Acorn default to PC MDA/CGA) and I had perfect, crisp integer scaling on my Dell 2007FP. Just excellent.

KVM Nerd wrote on 2022-05-10, 11:00:

dmuntz wrote on 2022-05-10, 10:53:

Is anyone currently selling these fully/mostly assembled? I've recently resurrected 3 IBM 5150s with various video cards (ATI EGA Wonder 800+, IBM CGA, Paradise CGA, and a couple of mystery monochrome cards), and will be working on a Tandy 4000 next. The old monitors have seen better days, so I'm looking for a relatively inexpensive way to use the many flat-screens hiding around the house with these machines. TIA.

Look for seller "marminsky" on eBay, he has them in stock every once in a while, or maybe when you ask him. Item is called "Video Converter RGBI to HDMI/DVI - IBM 5150 5160 XT 5170 (MDA/CGA/EGA) to HDMI" in his list of items, at least mine was.

EDIT: Found this link on the project homepage which lists some additional sellers: https://github.com/IanSB/RGBtoHDMI/wiki/Assem … boards-for-sale

I bought from Sellmyretro user Messe at that link. I think he's the same guy running that ebay UK account - but it's WAY more expensive from ebay due to fees, global shipping program etc.

what is the lag on this thing? has anyone ever made such measurement?

keropi wrote on 2022-07-08, 10:23:

what is the lag on this thing? has anyone ever made such measurement?

a quick google shows... https://github.com/c0pperdragon/Amiga-Digital … Video/issues/25

3.4 ms... 3.6ms ... +1.8ms ?
*sigh*

https://github.com/hoglet67/RGBtoHDMI/wiki/Lag-Measurement
3.6ms

that is pretty nice , less than a frame at 60hz
thanks weedeewee for looking this up!