In recently working on the Ethernet system at NQ4I, I ran across a problem
that may be of interest to others working on replacing the CT RS-232 loop
with Ethernet. When starting CT with the Ethernet Network enabled, CT would
hang as soon as the log entry screen popped up. After many hours of head
scratching, I noticed that the Ethernet card manufacturer listed their
software interrupt range as at 96 -128. NETTSR suggested 97 - 100. (The
starting offset between the two was 1). When I set the Ethernet card to 99
and NETTSR to 100, the Network worked perfectly.
Rick purchased the new ISA bus cards from Fry's Electronics in Los Angeles
for $9 each (includes BNC Tee), but I believe similar units are available
from vendors listing at http://www.pricewatch.com. RG-58 cables were $4,
terminators $2. For about $80 we equipped 6 station computers.
We plan on using Com 5, IRQ 10, and I/O address space of 320h for the
network.
Thanks to K1TTT for NETTSR !
Jeff W4DD
ex WB8HDD
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