Date   : Tue, 06 Jun 2017 19:47:06 +0100
From   : blip@... (Blip)
Subject: Glorious DVI take 2

Such a teaser. Come on where's the pics?

John

-----Original Message-----
From: bbc-micro-bounces+blip=blipit.com@...
[mailto:bbc-micro-bounces+blip=blipit.com@...] On Behalf Of
John Kortink
Sent: Tuesday, June 6, 2017 6:39 PM
To: bbc-micro@...
Subject: [BBC-Micro] Glorious DVI take 2


Allright. Another major hurdle taken : the compatibility (or general lack
thereof) with various monitors, solved. Due to a totally new synchronisation
strategy.

The contraption (a Terasic Cyclone V GX Starter Kit development board with
various homebrew bits stuck onto it) now outputs 1:1 pixel, line doubled
video over DVI. Perfectly source synchronous.
Drift compensated. Since, in modes 0 through 6, odd and even frames come
from the same source, even interlaced output is improved (as it's
essentially displayed non-interlaced at double the refresh rate). Only one
line output delay. Gorgeous.

Strictly 50 Hz frame rate though. And no mode 7 as yet (this has its odd
pixel rate and interlacing to be solved). Already good enough for Electron
though ;-)

Watching the running demo screen of Frak, via HDMI, on a 55" 4K TV, was
never this exciting. In a nerdy way. 

More later. Hopefully.


John Kortink

-- 

Email    : kortink@...         
Homepage : http://www.inter.nl.net/users/J.Kortink

GoSDC, the ultimate BBC B/B+/Master/Electron storage system :
http://web.inter.nl.net/users/J.Kortink/home/hardware/gosdc


_______________________________________________
bbc-micro mailing list
bbc-micro@...               
http://lists.cloud9.co.uk/mailman/listinfo/bbc-micro