At 05:15 PM 4/7/00 EDT, you wrote:
>Gary:
>
>Methinks it might be time to look at using resistor networks.:)  And I think
>you are correct to pull each up individually just in case.  I have always
>made it a practice to do that even tho it might be possible to use a single
>pullup/down resistor with multiple I/O lines.
>

Ditto, here. Separate pullups using a nice little 10-pin SIP,
with 9 separate bussed Rs. Easy to extend to dozens of lines.

However, do be aware there is a "certain" amount of cross-talk,
[??capacitive/inductive??], between the Rs in this config. I use
this arrangement with 47K Rs on one board, and very-fast edges do
tend to bleed over to adjacent channels - but should be no problem
in a clocked system - or maybe with lower R values.