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"Don Bruder" <dakidd@sonic.net> wrote in message
news:kN2Cc.18309$Fo4.238465@typhoon.sonic.net...
> Actually, one specific version (From memory, I'm wanting to say it was
> 1.4 - trust that EXACTLY as far as you can throw it, though...) of
> ProDOS had a 65C02 instruction that got left in when it shouldn't have
> been. The next release fixed that.
>
> I'm pretty certain that prior to ProDOS 16, the only "unusual"
> requirement to run ProDOS was an ext. 80-col card or compatible. It had
> to be the extended version (or something that was compatible with it)
> rather than just a "plain" 80-col card, though, since the reason it was
> needed was for the extra 64K of RAM, which is where 95% or more of
> ProDOS lives once it gets loaded up. Apple did their best to allow the
> older hardware to run ProDOS, and those efforts included specifically
> avoiding use of 65C02 instructions that might not be avaiable on older
> rigs.
>
> --
> Don Bruder - dakidd@sonic.net - New Email policy in effect as of Feb. 21,
2004.
> I respond to Email as quick as humanly possible. If you Email me and get
no
> response, see <http://www.sonic.net/~dakidd/main/contact.html> Short
> form: I'm trashing EVERYTHING that doesn't contain a password in the
subject.