Nicolet stuff

[dwight]

Hi Bob
 I'd gotten the hard drive for the Nicolet but not had time to
fiddle with it. I'm currently redoing my code for the floppy drive
on my Nicolet.
I have a couple disk platters that should be able to be used
for the hard drive ( and one that had a head crash ). I'd
cleaned up the heads on the drive and with the new disk, seems
OK.
I've not fiddle with it since though.
I was wondering if you'd like to fiddle with it on your Nicolet.
You could barrow it for some time and install the demon code
on it.
On a separate issue, when I'd gotten my Nicolet, I had 2 failed
ICs. One was a 7474 and the other was a DTL with expanded
input ( I swapped a location that didn't need the expander
input and use a TTL there for that part ).
I just got started again and found the address wouldn't increment.
After some frantic trouble shooting ( knowing it was Saturday and
most places would be closed tomorrow for parts ), I finally traced
it to a bad 7404. It is not easy without an extender card.
I'd attach a couple wires to locations I wanted to see and stick the
card back in. I must have pulled an inserted two of the cards
30 times. I hope is wiped the connector pins good and clean.
If you should decide to make an extender, I'd split the cost of the
boards with you. I think it would be easy to make three separate
extenders and put a rail across them to hold them together.
It wouldn't be too bad to just have the three separate ones and
be careful connecting things.
I believe they are just three 100 pin connectors, like S100 boards
use.
Dwight