Will you still port mame to the RS-97 despite the 320x480 screen?
Though the screen is still 320x480, userspace only needs to target 320x240, as the kernel in RetroFW then takes care of upscaling that to 320x480 using the IPU, resulting in little to no CPU usage involved.
Anyway I just got an LDK too and on first inspection it looks nice though I haven't looked closely at some details.
This device already came with Retro FW so it looks like reflashing isn't necessary, is that correct?
I'm hoping now that it's screen refresh is normal - at least 60hz?
It comes with my Useless firmware, which i have discontinued work on it.
For RetroFW, you'll have to upgrade to it manually but fortunately the internal sd card slot is easily accesible right under the battery slot :
no need to remove any screws.
And yes, the screen is 60Hz with vsync and all, no need to worry about that.
So yeah, slasneesh that's why you should come back more often here : that would have saved you a lot of time...