30 Jan
2011
30 Jan
'11
9:10 a.m.
Tony Duell wrote:
Incidnetlaly, I've just rememberd I ahve a somwaht
odd RML380Z board
soemwhere. It's got a bit off address deocding logic on it,
interconnected by PCB tracks. And 3 (I think) Z80-PIOs and a Z80-CTC in
wire-wrap sockets. The Z80 bus linesare are connected to the 380Z bus
connector, etc. the port lines and the counter/timer signals go nowhere.
There's also a little prototyping area on the board and space to fit some
header plugs. The idea is that you make your own custom interfce by
adding the logic you need and wire-wrapping it to the PIO and CTC pins.
Ans wire-wrap it to a header plug to connect a cable to the peripheral.
Hmm, is there any way you can get a scan/photo to me? I'd love to see that.
I've seen another system with an analogue board inside, and enough guts for
six serial ports.
My fileserver system had a Z-net board fitted for networking to the 480Z
clients, and a SASI interface board.
I would love to find some of the other board too.
There was rumoured to
be an GPIB board. And an Econet interface. Oh, and a scheamtic of the
cassette control box would be intreresting.
GPIB I can imagine - I've never heard of an Econet interface, though; that
would be an interesting find (as would any software to make use of it). I
wonder if that was a commercial offering (I'm surprised that RML would be
allowed without Acorn getting upset - maybe via a third party, though?) or if
it was someone's homebrew...
Fuses generally blow for a reason. I asusme this is a
mains fuse (in
series with the live side of the mains), in which case the problem could
be a short on the primary side (e.g. a filter capacitor, if they're after
the fuse), or a short on the seondary side (redtifer diode, smoothing
capacitor, etc0.
That's true - I was thinking that Adrian had a fault somewhere in one of the
boards, but I suppose it could just as easily be in the PSU itself (and easy
to determine as I'm pretty sure the RML supplies are simple enough to run with
no load connected)
Of course findign a 100W bulb these days is a problem
:-(
Yes, getting that way here, too! Maybe it's possible to get a heat lamp bulb
of the right wattage, though. The one I have here (to stop the dogs freezing
at night) is 250W, but I suspect they do lower-wattage ones, too. As they're
intended to release lots of "wasteful" heat, I don't think there are any
plans
to ban them...
cheers
Jules