Help please!
I currently have a mostly-stock A1200 (accelerator card, no flicker fixer) hooked up to a NEC AccuSync LCD 71V monitor via the Commodore 23-pin to 15pin adapter...great display for retro systems, displays standard 15KHz Amiga modes in addition to 31KHz and several in between. Love it, but wanted to add a CRT alongside for gaming and a more "authentic" graphics experience.
I found a guy on Facebook marketplace that sold me an Amiga 1080 CRT in good condition and it is currently in transit. What I'm looking for now is a set-it-and-forget-it way to get both displays connected to the A1200 at the same time, without having to swap cables at the 23-pin Amiga RGB port all the time. A dual-monitor, duplicate-display setup, if you will.
I found both a VGA splitter and a 15-pin VGA to 9-pin RGB cable on Amazon that at initial glance looked like they would do the job...connect the splitter to the existing 23-to-15 adapter, plug the VGA monitor into one split, and the 15-to-9 cable into the other split to then send to the 1080. But after talking it through with another user on Facebook, he pointed out that it wouldn't work because the CSYNC line from the Amiga would not pass through to the CRT from any of the splitters and cables in the chain.
I guess what I'm looking for is...are there existing solutions that I am overlooking? Or is this purely a create-your-own-custom-cables thing? If the latter, are there any users here that create cables/splitters that can help with this, or can point me in the right direction? I have zero DIY skills when it comes to cabling so any help getting both monitors connected and displaying simultaneously would be TREMENDOUSLY appreciated!