7 Nov
2009
7 Nov
'09
8:04 p.m.
I have boatloads of 6810's here - I salvage them from old pinball ckt bds
Send your home addr off-list and I'll drop some in the mail.
=Dan
Geoffrey Reed wrote:
Haven't come across the pcb with modern parts yet,
I've emailed a place that
claims to have the 6810's at < 4 per chip, but they are slow in responding
to requests and if they do have it, they ship via carrier pigeon so it will
take half of forever to get here.
I know there are a few sites that are selling these, and other ones like the
happy board, but I have eproms a plenty, and although the US-Doubler is
fairly reasonably priced, and I'm on a fairly tight toy budget I'd rather
build it myself if I can.
And since my other USD 1050 is currently down with blown ram, I need to get
some 6810's anyways to fix it... Dropped in the original 1050 rom, reset
the jumpers and put the 1 known good 6810 I have into it and it worked fine,
just no DD.
On 11/7/09 6:50 AM, "Curt @ Atari Museum" <curt at atarimuseum.com>
wrote:
There are a couple of sites still selling these
and I could swear
someone had done a new PCB design with modern parts someplace:
http://cgi.ebay.com/US-Doubler-Upgrade-Atari-1050-800-XL-XE-ICD_W0QQitemZ14…
5684503QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item20ad413217&_trksid=p3286
.c0.m14
Curt
Geoffrey Reed wrote:
> This is the way we burn the roms (now to find some MCM6810 or compatible
> rams and upgrade the ram in my old 1050 non double density) and make a US
> doubler compatible 1050. Copied the rom from my other USDblr 1050, and need
> to make the piggyback ram. ?course my DD 1050 needs new ram, it?s damaged
> too :(
>
>
>
------------------------------------------------------------------------
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.425 / Virus Database: 270.14.53/2487 - Release Date: 11/07/09 19:39:00