The obvious problem is time delays; the higher the clock speed of your bus the shorter it has to be in order for the electrical signals to cross the bus in a single clock cycle. So, for a 66MHz bus to function, signals need to traverse the bus in t=1/f or 15ns, assuming electricity flows at close to the speed of light 3x10^8 m/s, length=(3x10^8m/s x 15x10^-9) = 4.5meters. But my guess is this is the theoretic upper limit, and its probably alot less than that due to things like capacitance between wires, resistance, and the like, but it can probably be extend a foot without any problem. I looked for pc/104 bus cables, but didn't see any online. Suppose you could always solder one together. -Paul Glen Johnson wrote: > > > > does anyone know of a source that can provide cables to remotely mount a > > > PC104 card from the base stack? > > > > I haven't seen them, but they could exist. There are many problems inherent > > in extending the bus, though. > > I thought of the same thing, can someone comment on this? Like how long > can a bus be extended? Why is there a restriction-- low voltage/signal > degredation? What other problems? I seems like cabling the bus would add > a lot of flex to the entire setup. > > glen -- R. Paul McCarty / DARS Coordinator // x52059 317 Lattimore Hall, University of Rochester, Rochester, NY 14627 Computers don't make mistakes;what they do,they do on purpose.-Dale/KOTH
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