World's first computer on ebay!

This is a recurrnet thread here.... I depends on how you define 'home' and 'computer'... Yes. I am trying to rememebr the details -- I suppose I could haev a hunt for the schematics... It's something like there's an output port that when you write to it it toggles a flip-flop. In one state you have 64K of RAM. In the other state you have 32K of RAM in the top half of the processor's address spave, the bottom 32K is ROM (the standard 16K system ROM and the empty socket alongside it). It clearly states out in the second mode after a reset. No reason why not. The disk interface is pretty standard. It's the normal 34 pin conenctor, signals as you'd expect them. I think the standard drive is single-head 40 cylinder, I have no idea how easy it is to get the OS to recognise 2 heads and/or more cylinders. It is. A nunderground railway is surely a public transport system. Acorn called their second-processor interface the 'Tube'. Partly to give the idea of a pipe down which you could shove data between the 2 processors, and partly because Tube == underground railway == alternative to a bux (as a means of transporting people around London). Tatung called thge expansion bus on the Einstein the 'Pipe'. It was clearly a pun on 'Tube', although it had nothing to do with second processors (AFAIK there never was a second processor for the Einstein), it was just a standard Z80 system bus -tony