Some people have really great, nicely tuned, quiet QLs that will be running 'til the power goes. Some people don't. :)
I can attest from my own experimenting to find out why my QL+QPlane kept crashing, some of the lines were noisy and the power wasn't clean. My testing of these boards Tony sent me, they're a much better design. I'm sure he'll chip in :) On Tue, Mar 12, 2013 at 3:01 PM, Ralf Reköndt <[email protected]>wrote: > Well, I once built a QL board in a case with a simple expansion PCB for > connecting an SQB, a QFlash EPROM board and a QEP III programmer outside to > a separate connector. No separate power supply and no capacitors and all > worked well the whole time. I am a bit unsure why it should take such > things to make it work. > > Cheers...Ralf > > ----- Original Message ----- From: "Dave Park" > > > Hi all, > > I have assembled the remaining stock of TF Services' MPlane. These are a > great upgrade if you're using a less reliable backplane. > > Mplane is a low profile backplane to allow three QL expansions and the > original motherboard or Aurora to be fitted in a case. It was originally > designed for Qbranch's MinisQL, but can be used in any installation. > > It is arranged two high and two wide, allowing the motherboard and first > expansion (Gold Card, Super Gold Card or the new Goldfire) to be fitted > side by side and firmly fixed to the case. Only light expansions (ie > qubide) need be mounted above - no more flying Super Gold Card! > > Also provided is a standard ROM slot as an alternative when using Aurora, > which doesn't have the standard connector. When used with Aurora, this ROM > slot is fitted facing towards the case back, allowing access through the > back without opening the case. > > A 4 layer circuit board with noise reducing internal power and ground > planes is used. Extra smoothing capacitors are fitted, and all sensitive > signal lines have pull up/down resistors as necessary. > > It powers off a standard IBM style 4-way connector. +12v/-12v (nominal) are > generated on board for mouse/serial ports. It can be used off 5v only if > floppy/hard disk drives are 5V only. In a tower case, connection of the > standard 4 way power connector will supply both 5v and +12v. The case's > reset switch can be connected to the backplane to reset the QL or Aurora if > needed. > > Size is 35 x 197mm > > Price is £39 each, plus £9 shipping (£5 extra shipping for each additional > MPlane). I accept PayPal to [email protected]. I will also post them on > SellMyRetro.com in due course. > > I will start shipping MPlanes on March 22nd. > > Please email me off-list if you would like one. I have a limited number. > > I have posted photos of them here: > http://www.qlforum.co.uk/**viewtopic.php?f=6&t=505<http://www.qlforum.co.uk/viewtopic.php?f=6&t=505> > > > In the coming weeks I will also start selling the following: > > (S)GC battery replacements. Yes, they're here and done at last. I have been > testing them for a good time now, and they work really well. Finally, a > permanent solution to the GC battery problem. > > MultiROM: Two ROM images selectable by a switch. Ultra-low power to help > keep your QL cool. > > Further out: an ultra low power memory expansion for non-GC QLs, more > QubIDE cards. Possibly an ethernet card. > > What I'm *not* working on: Making more SGCs - though if I can source > > compatible logic, I will try to get replacement parts available for those > of you with dead SGCs. Someone emailed and asked me if I'm designing a > super-QL. Sorry, no. I am playing with a 68EC020 QL for my own amusement. > ______________________________**_________________ > QL-Users Mailing List > http://www.q-v-d.demon.co.uk/**smsqe.htm<http://www.q-v-d.demon.co.uk/smsqe.htm> > ______________________________**_________________ > QL-Users Mailing List > http://www.q-v-d.demon.co.uk/**smsqe.htm<http://www.q-v-d.demon.co.uk/smsqe.htm> > -- Dave Park Sandy Electronics, LLC [email protected] _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
