On 24/04/2022 09:17, Kevin Melling wrote:
> In message <t3k8v7$4si$1...@dont-email.me
> druck <ne...@druck.org.uk
>> On 18/04/2022 14:07, Kevin Melling wrote:
>>> Does anyone have a recommendation for a VGA to HDMI upscaler please for
>>> the basic output of a RISC PC (RPC700 without viewfinder)
>> You probably need an MDF with as close to VESA standard timings as
>> possible. Some MDFs you might find online describe this as relaxed timings.
> In fact I found a direcotry of MDFs on the RISC PC itself. Not sure where
> I got them from. First I tried was labelled "Samsung" which worked first
> time at least in 1024*768.
Monitors can lock on to a wide range of different modes and are fairly
forgiving of the various timing constrains (although LCDs not as much as
the old CRTs). However the very cheap VGA to HDMI adaptors need a signal
which is very close to, if not bang on the VESA standard timings, so you
can't get away with any old MDF. Tools such as !MakeModes can show if
timings are standard or not.
I feel the 4K Dell monitor is being somewhat
> underused here :-).
The Risc PC wont be able to do 1920x1080 which scales 2:1 a 4K monitor,
but generating a 1280x720 mode would be better than 1024x768 as its
scales 3:1 and is 16:9 instead of 4:3.