Hi, I know you can get by without the clock/bus interface chips, but *technically* the 8080 is a 3 chip solution which, by his definition, makes it a mini.... I've also got a vague recollection that the F8 came in 2 seperate packages? I'm just saying, it isn't always quite as cut and dried as it might seem. BTW Although the 8080 can do without the bus interface chip, it does generate a number of fairly important control signals which you would otherwise have to latch and generate yourself "manually" as it were. As such I consider it an important, albeit external, part of the processor (as in, the only reason they made it external was because there weren't enough pins on the processor package to accommodate all the required signals). Sorry, bad example....I must've been suffering from severe brain-fade when I wrote that....I've got a mini downstairs, which I think contains a CPU made of bit-slice processors. D'Oh! What I specifically had in mind when I wrote that was the "mathbox" inside my Atari BattleZone (and now I come to think of it, the FPF11). Never mind... ;-) TTFN - Pete.