27 Sep
2005
27 Sep
'05
11:08 a.m.
I've never
seen the floppy drive for the 480Z. From what I can tell, it
linked to one of the serial ports on the 480Z, and used a synchronous
protocol (both ends of the link were Z80-SIO chips). IIRC it's the same
PCB as was used for ther intellegent disk controller in the 380Z, which
contained a Z80, RAM, and the serial chip.
I think we've been here before :-) Yep, you're absolutely correct - it
does use the same controller in the drive. I've got one of the
(museum-owned) drives back in the UK, along with the Shared Disc
software so that the drive could be made visible across a network (one
step down from the full CHAIN network fileserver that I have). One day
when I have time I'll try and make it Do Something...
I'm lacking the connecting cable, but as there are SIOs at either end
that shouldn't be a problem to figure out.
I believe that the 480Z hosting the drive then becomes a decicated
fileserver in this setup; it can't be used to run normal programs.
I can't see why it should. There's enough intellegence on the disk
controller board to act as a simple fileserver, I can't see why it would
need the 480Z's processor as well. 2 Z80's just to run a floppy drive is
excessive!
The software on EBay would sure be nice though as it seems that's
designed to allow a single user to boot CP/M from a 480Z, without
futzing around setting up a full network (not all 480Zs come with the
analogue side of the network hardware fitted anyway)
Mine didn't....
480Z machines are hard to find now, although
there' a plastic-cased one
on E-bay at the momnet, I think. The older metal-cased version (black
painted, like a 380Z keyboard) is, I am told. rarer.
That's certainly been my (limited) experience. Shame really, as they
were pretty good machines - a lot better than much of the other 8-bit
stuff floating around at the time IMHO. Somewhat let down in the graphics department though, even with the hi-res
hardware fitted - plus
of course they don't have all the nice expansion options of a BBC micro.
No, no second processors, for example. But there was a user port (not as
good as the Beeb one), and an optional GPIB port.
(I've got a plastic-cased 480Z set aside for you btw, just in case you'd
forgotten!)
When you get back here, I'll have to find time to visit...
-tony