710/720 hires board found!

From: vossi <*vossi_at_ceffy.de*> Date: Sun, 18 Feb 2018 08:28:02 -0700 (MST) Message-ID: <1518967682950-0.post@n4.nabble.com> · vossi_at_ceffy.de

Hi, I just found this Hires-Graphics-Extension in a B720. It plugs between
the Char ROM and the Screen Memory. It also plugs in the 74245 buffer U30 -
and the 245 is on the hires-board. It has 32kB dedicated ram. That's enough
for one page with 640x350 resolution monochrom. It had some wires to the
userport...
Has anybody Infos about this extension?

PS: The 720 is actually dead - so I'm not able to test it...

Here is a pic:
http://lc64.blogspot.de/2018/02/cbm-710720-hires-board-found.html

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