NEC uPD7220/GDC Design Manual

[Dan Roganti]

Tony Duell wrote:
>> 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...
>   

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/   ]