I once had a kind of Mini-PC case, where I fitted a powersupply, an issue 5
board and a kind of backplane (with 6 plugs), unpowered with a separate left
whole in the case to plug a QEP III into it (connected with a separate
cable). The backplane was fitted with an SQB 513k plus an QFlash 64k EPROM
card. All has worked well without problems. I always wasn't unsure about
separate power or capacitors for such a backplane, of which I have read. I
had none of that and I never run into problems.
Cheers...Ralf
----- Original Message -----
From: "Rich Mellor (RWAP)" <[email protected]>
To: <[email protected]>
Sent: Saturday, May 03, 2014 9:42 PM
Subject: Re: [Ql-Users] QL backplanes....
I no longer use a QL with a back-plane - when I did have that set up it was
to
use an Aurora, Super Gold Card and QubIDE in a PC Tower Case.
I also liked to have a spare slot for access to a QEP III for example
(although
I never had one at the time)...
The main issue now is that ATX cases (for which this combination was
designed I
think) are now hard to find.
The main problem I used to have with that original set up (and with other
backplane setups I have looked at) was how each card is fitted into the
backplane - typically with nothing to support them other than a bit of
cardboard
between each board, or maybe some plastic toothed strips which it was not
always
easy to attach onto the edge of the boards (due to chips near the edge)
and
quite often fell off in transit...
On May 3, 2014 at 6:50 PM Dave Park <[email protected]> wrote:
I tried to start a discussion earlier on
QL forum about
QL backplanes, and asked people to send photos of their systems and tell
me
how they used them, and what factors made their decisions... I got a very
poor response of zero to th
at
request. :)
I have decided I phrased the question too narrowly. The area I am looking
at is much wider than my question, so I have decided to rephrase the
conversation in a new thread.
QL2 looks like it will have some built-in expansion, possibly including
two
or three pre-decoded areas. It will need to be able to work as a swap-out
replacement for QLs or Aurora in cased systems, while still fitting in
the
footprint of the original QL board so it can fit in a QL case. This
implies
an edge connector like the QL's own...
Given the generally poor signal quality of the Qplane, and the (some say)
uncomfortable layout of the Mplane, and the slew of new hardware soon
looking for a spot in systems that are already full, I have to consider
the
possibility of a new backplane learning lessons from everything currently
existing.
I asked my question in the light of the above. I was hoping to learn
what's
important and what's not to most people.
This doesn't just feed into a maybe new backplane, but also feeds into
the
ultimate design and expansion possibilities of QL2 itself.
So, what do you think about expansion? What's the deal with your set-ups?
What would you like to improve them?
If you are both here and on QL Forum, please reply there:
http://qlforum.co.uk/viewtopic.php?f=2&t=951&p=7631#p7631
Thanks!
--
Dave Park
Sandy Electronics, LLC
[email protected]
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Rich Mellor
RWAP Software
www.rwapsoftware.co.uk
www.sellmyretro.com
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