19 Jul
2004
19 Jul
'04
8:59 a.m.
It looks like your IC17 would be a LM1889 (or U1889 ) which is a TV video
modulator - so of no real consequence if it's missing, as you're not
watching through your tv aerial . Can't get to my Dragons to confirm this
but I'm sure they'll know on the Dragonuser site.
Geoff.
----- Original Message -----
From: "Jules Richardson" <julesrichardsonuk(a)yahoo.co.uk>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)classiccmp.org>
Sent: Monday, July 19, 2004 5:50 PM
Subject: Re: Dragon 64 fixing...
On Mon, 2004-07-19 at 15:29, Jules Richardson wrote:
Finally found the five minutes to see if my
Dragon 64 works. It doesn't.
After some further digging on the web, the board in my machine is an
issue 2A, and is *not* the same layout as the one at:
http://perso.wanadoo.fr/mpc.fab/dragon/photos/dragon64carte.jpg
... however it's roughly the same and my 'missing' IC17 is approximately
where IC39 is in that photo, just below the ROMs. They both happen to be
18 pins, and so quite possibly the same chip - unfortunately I can't
read the number off that photo. Any idea what it does?
Unfortunately the only D64 schematics I've found on the 'net are mono
GIF images of such unusable quality as to be a total waste of the host's
webspace :-(
cheers,
Jules
