I have a nice old HP 5340A counter that isnt working. A little
peeking at signals shows that the two state-machine control PROMS are
loopy. They output "1"s all the time. Luckily the service manual
lists the data that used to be in them. So burning new ones is a
possibility. But:

They're old old 16-pin proms, 5 address lines by eight bits out.

Inputs on 10-14, outputs on 1-8 and 9.


Does anyone know of anything with a similar pinout?

Our do I have to make a 27C16 to this pinout adapter?



Thanks,


A_H