daver2
10k Member
Yep, always safer to use pull-up resistors. +5V directly can kill (semiconductors) if you get something wrong!
Dave
Dave
Blimey. I wish I had known that existed at the time...
At £4 its hard to think of any reason not to get one of these NOP Generator
As an aside, has anyone tried a 6845 in place of the 6545. I believe they are 'almost' identical ?
I do note that it uses the big round pins and would bugger up a PET socket, so I will have to use an intermediate thin pin 40 way socket to stop it damaging the socket on the board.
Oh good
We have another 8032 with the tynemouth board and that wouldn't work because the board with its big turned pins had destroyed the socket and the picture looked like this was similar.
No need to worry then.
There is a minor difference, but in the mode that the PET uses, they are compatible.I believe the 6845 is a substitute for the 6545 in the PET application but I suppose its just possible there is a conflict there.