Not many, I'd wager. I've seen exactly two in the wild ever. One was installed in
an A2000HD system from the dealer (an 8088 one). Another I found in a pile o' parts
(80286 one).
________________________________
From: Mr Ian Primus <ian_primus at yahoo.com>
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Sent: Mon, January 4, 2010 11:51:47 AM
Subject: Re: desoldering problems and technique (and amiga 2000 mod)
Yeah, and besides, Commodore knew at this point that if people wanted a feature in their
computers badly enough, they'd solder it in themselves. At least Commodore was good at
giving users the framework and the information they needed to do it. For example, look how
easy it is to add RS-232 to a C64. All you need is an inverter and some level shifters.
The routines are already in ROM to allow that to work.
Also, how many people actually *bought* the bridgeboard, anyway? I have seen dozens of
2000's, but I've never once seen a PC bridgeboard.
-Ian