Adding HDMI to the Apple IIgs using the RGBtoHDMI 

That's brilliant because it makes purchasing a IIGS so much more desirable when it has no monitor with it. Awesome video. Thank you.

Wow-that’s a lot of work! I’d be afraid to try it-but you made it look easy! I love your non-destructive mods!

That's slick! I had to wait months before I stumbled across a IIgs monitor and it's as orange as a pumpkin from UV. Well done!

Nice job on this one. It's one of the more difficult ones to mod for the RGBtoHDMI.

Looks great! I’ve an RGBTOHDMI on another system and it’s such a good picture. Maybe my IIgs needs a treat!

The reason you need to press the GenLock button when switching between legacy AppleII video modes and the newer IIGS Super High-Res modes is because the video pixel clock is changing from 14 MHz to 16 MHz. Hblank timing is also slightly different between HGR and SHR modes.

when the IIgs is accelerated to 8MHz as God and Steve Wozniak intended, then its THE ultimate Apple II - unaccelerated it is merely Steve Jobs' gravest sin

Thanks for this video. I actually paused it to take a screenshot of the points to solder to and it really helped when I did this for my IIgs.

Great work!👍

Very nice and clean mod! I need to get into the RGB2HDMI business too. I have an Amiga that I need it on. I should make a video on that soon I think. :D

Cashies 4x3 monitor for the win!

I have no monitor either, just using composite. I have been using the Booti card with the IIGS Works great.

Regarding using the vise to clamp IDC connectors, I would have obtained some thin pieces of softwood instead. Not sure what all you have down in Oz besides eucalyptus, but it would be easier to use wood to line the jaws (you could probably even take the metal jaws off and replace them with homemade wood ones for when you need to do this kind of clamping work).

This video got you a new subscriber. I really enjoyed it!

Great work! I love the IIgs, but it’s VGA output is different from other computers in that you can’t just hook up a VGA monitor to it.

Hats off to you Sir. That was a neatly done and impressive mod that worked very well. (Looks at IIgs) Naw I'll stick to using mu Commodore 1081 plus my home made SCART lead :-D

Good on ya Jase!

Great video! I was in the same boat last year, IIgs with no monitor. I ended up attaching the RGB2HDMI to the power supply and left it internal. Then ran a HDMI cable and USB (Booti) out the back. Making me 2nd guess my set up ;) No battery replacement yet? *gasp*

Great video and you're right, that monitor isn't a great fit for the IIgs..... I think a VGA CRT monitor will look great for that setup. An HDMI to VGA converter with the RGB to HDMI adapter works quite well and this in turn can be plugged into a VGA CRT monitor. I've done this before, I even use my iMac G3 DV as a CRT monitor for my CoCo 2 with this method. Imagine an iMac G3 as a monitor for a IIgs......

maybe get a nice white 4:3 LCD and an HDMI to DVI adapter

Nicely done :)

Awesome, dood!

I really need to get onboard with this RGBtoHDMI thing. Is there anything it can't do? 😁

Nice video, I tried it myself and want to ask what firmware version you use and which profile you choose (Apple IIc TTL with IIGS Subprofile?)

First, I love your video. I have watched the video at least four times to get information. I do have a question on how you figured out your pin 14 on the cable which you have marked as VSYNC. I have been looking at the circuit diagrams of the 01 and 03 IIGS and I have my doubts about your cabling when it has to do with pin 14. What you are connecting to with pin 14 is FLIP6 which only runs the A6 address lines which connect to the memory modules. Could you possibly have wanted the exact opposite pin on the VGC for RGB? Could someone have counted from the back rather than the front of the motherboard? Those RGB pins (20,21,22,23) might have a VSYNC on them? Plus I am not sure if you need another line with VSYNC. The RGBtoHDMI can take composite sync? Pin 6 on the VGC is supposed to be composite sync which carries both V and H sync. So is pin 14 really needed? Where did you get your logic for connecting to pin 14? Have you tried the RGB2HDMI without pin 14? I guess sometime this weekend I will be seeing if it is necessary. I am doing all my work without actually doing any soldering on the motherboard. I have both ROM 01 and ROM 03 IIGS and on the ROM03 the VGC is not socketed and as such you can put a socket over the top of the VGC and get all the connections directly from the VGC. Here goes nothing.

Nice mod! I was wondering, though, why the RGB2HDMI couldn’t simply be connected to the original RGB port? Does the mainboard connections provide TTL level signals, so that you don’t need the additional board in the RGB2HDMI?

This ice interesting, but it wasn't clear to me why you couldn't use the existing monitor connection? I'm sure there's a reason!

Is this the same on the ROM3 IIgs?

Hello Is this applicable to rom03 apple IIGS?

I see you have the "Woz" version of the II GS, does this mod differ for the other rom versions of the motherboard?

Ozito tools. Bunnings! Did you at least get a sausage?

I don't believe the timings are exactly the same on the IIgs mode and IIe mode.

My 4 IIGS outlived my Apple Watch for 35 years. Even my apple Color monitor works better than the watch! And it’s not recapped yet!. How apple is making less and less reliable products every year that passes. It’s a Woz machine, all the other stuff managed by jobs and his crew are crapier every day that passes. Eventually I’ll get my hands on a apple IIe! Apple II for ever

With all of these vintage systems being supported by the RGB to HDMI project, I wonder if there will ever be a need to get an OSSC or Retrotink ever.