With a lot of help, I've managed to get the RGB2HDMI mod working with my STacy.
I bought the complete kit from "SellMyRetro", which includes the 12 bit buffer board.
https://www.sellmyretro.com/offer/details/rgbtohdmi-for-atari-st~~ste-61574
Here's a picture of my STacy's motherboard, with labels showing where the 3 wires
(Blank, Vsync, and Hsync) go. I'm not sure if this applies to all STacy motherboard
revisions but it works with my board, which is the "C103999-001 Rev.B" version.
The next 3 pictures show me setting it up for use:
Currently, I'm using that popular Dell 27" monitor. Why the Dell? Because the brand new,
never used, out of the box replacement screen and controller board I'd bought to replace
the STacy's original screen was dead on arrival. 😐
I've got another ordered but I'll have to wait for it to get here (slow boat from China, ya
know).
<drums fingers>
I'm posting this to hopefully help any other STacy owners who are planning on installing the
RGB2HDMI mod in their machines.
So if anyone was following my RGB2HDMI mod in my STacy threads in the 3 main Atari forums, you know that I was having trouble getting the RGB2HDMI mod to boot up in 60hz mode - it kept on booting up in 50hz (PAL) mode.
Turns out, the modified Pak/3 TOS ROMs that Holger Zimmerman compiled all those years ago was set to 50hz. I contacted him and sent me some recompiled ones for 60hz (NTSC). Short story, it worked! The RGB2HDMI Mod is now booting up in 60hz mode. Over the years that I've owned my Pak/3 board
and been using it, I don't know how many times Holger has come through with solutions and I can't thank him enough.
Here's a few pictures:
One more problem solved and inching close to putting my STacy back together. 🙂
Some progress... Here's that replacement screen in action, as well as a shot of both the internal screen and the external monitor port in action simultaneously:
So you sourced a modern LCD (with hdmi input) that will fit inside the STacy to repace the OEM display? Mines got a NOS OEM display so I think I will keep it stock.. It's nice and bright and clear but passive matrix and old tech so not so great. I did buy the RGB2HDMI / Lumacode to put in my Arabic (had to burn a standard rom to get USA chars but the key caps look cool), PAL 65XE that I am using for my XE laptop project and I need to get that install figured out.