18 Jun
2009
18 Jun
'09
3:30 p.m.
Tony Duell wrote:
yes the tech manuals are on that website.
I just downloaded them too
How many pages is in the 7220 databook ?
That link for the databook has 24 pages and a friend of mine here in
Pittsburgh has a papercopy which has only 24pages.
=Dan
[ = http://www2.applegate.org/~ragooman/ ]
Andrew,
Did you get the one copy at this link ?
http://electrickery.xs4all.nl/comp/virtlibrary.html
It doesn't have schematics per say, but there's plenty of info in that pdf.
I thought hte Epson QX10 used a 7220, and I've just checked the technical
manual and it does.. The video circuitry is on a daughterboard, the
newer one used an ASIC so the schemaitcs aren't a lot of use to you, but
the older one was the 7220 + DRAM + TTL + a chracter generator EPROM. It
doens't look _that_ complicated...
I think the QX10 technical manual is on a web site somewhere, and
includes said schematics.
May be of interest...