Re: Apple IIe + ProDOS = Headache

[Don Bruder <dakidd@sonic.net>]

In article <JfydnToibOnMNUXd4p2dnA@comcast.com>,
 "Bill Garber" <willy46pa@comcast DOT net> wrote:

> "Josiah" <com.yahoo@chibivash81> wrote in message
> news:Ko1Cc.76782$Hg2.15714@attbi_s04...
> : Alright, I've just spent several hours trying (and failing) at
> getting
> : ProDOS/ProDOS applications to work on my unenhanced IIe. I've
> tried versions
> : all the way back to 1.1.1 (or something like that) and either
> it complains
> : about "Relocation / Configuration Error" or the more obvious
> error that
> : ProDOS 2.x needs IIe enhanced or better. I have an 80col/64k
> memory
> : expansion card that carries the Apple brand name and logo so I
> don't see how
> : memory can be an issue with 1.x versions (unless the card is
> bad). I tried
> : yanking all the other cards except the floppy drive card and
> booting up and
> : I get the same error, with or without the memory card and just
> the floppy
> : card.
> 
> If I am not mistaken, ProDOS requires a 65C02.
> Try swapping the CPU with one and you'll be sure
> to be up and running ProDOS in a flash.  :o)

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.
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