Bootable Model III Disks...

[Fred Cisin]

> > Nope, not gonna take it back.
> > In my circle of users in Brooklyn, EVERYBODY with a Model I had a
> > doubler if they had disk drives. EVERYBODY.

On Thu, 4 Mar 2010, Tony Duell wrote:
> It is extremely unscientific to stick to a statement when you have clear
> evidence to the contrary.

I haven't seen any clear evidence that he every hung out with anybody
without a doubler, so his statement could be technically true.

> This is a ninternational list. I qould guess there are many people here
> (including mysef) who have never been to Brooklyn.

But, if you ever do, apparently EVERYBODY in Brooklyn had a doubler.
So, Brooklyn might be a good place to buy RS Expansion Interfaces.

> > I'm sure there are people on this list who didn't. Because you guys
> > can be pretty stubborn, ornery and non-standard.

well, yeah.


> > and had lots of trouble reading disks.

Among the people that _I_ hung out with, everybody had already solved that
long before the doubler became available.


> This is soemthing I can't explain. I have a 'stock' M1 EI, using the
> internal data separator of the 1771. I never had _any_ problems with it.
> It read disks with no isseus at all. I had many more problems with the M3
> (first of all that infernal tapewire cable between the CPU board and the
> disk controller board, and in fact I had to replace the 1793 chip in the
> M3 at least once). Oh well...

I wonder if there were any differences in the Expansion Interface, other
than the power supply?

Around here, there were lots of EI problems unrelated to the FDC.

RS did a "free" "upgrade" of EIs to a "buffered cable" between the CPU and
the EI, then did an "upgrade" to add an additional DIN cabel, then another
"upgrade" which included switching back to an unbuffered cable.

> As I said, I was seriously ocnsidering a Doubler, but finding an M3 at a
> low price removed the need for it...

a doubler was worth having, but there were other alternatives, including
mutually incompatible other devices for the same connections.


--
Grumpy Ol' Fred     		cisin at xenosoft.com