480z system disk on ebayu

[Tony Duell]

> I've been trying to get hold of one of these and a 380z for ages, they
> seem to be quite scarce now. Unless I'm looking in the wrong places.

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 suspect the ROM was 
different though.

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.

-tony