Not sure what you mean by membrane keypad. My front panels certainly
have real buttons, which makes a clicking noise and feeling when I press
them. But maybe I'm confused and there is some membrane behind the keys
or something?
Johnny
That's my mistake. I've never actually seen or touched a DKC8-AA panel, just
pictures of them in the manual :)
Hoping to acquire one since I am trying to do other things with the 8/A than
keep debugging its hardware! (such as getting Dumprest working for RL02).
The 74f parts may be too fast. Try adding damping resistors (10 to 30 ohms)
in series with the outputs to slow things down or just switch to 74ls
Joe
Thanks for the tip. That is what I was implying, not sure I said so
explicitly :)
But adding twelve resistors which may or may not fix the problem, and
hacking up my board is not an attractive thought... but neither is changing
three 20-pin unsocketed DIPs without proper desoldering equipment. Guess I
should have used sockets in a prototype!
Besides, the board really does need redoing with proper power and ground
plane management.
-Charles
