On 9/4/2015 11:10 PM, dwight wrote:
The idea for using the tristate control for an OC
output has been
used many times before.
An example is on the SwyftCard for the Apple 2e.
It needed a OC for the reset as I recall and the PAL used
that trick.
The only possible issue is the limited current drive for older
DTL circuits.
Dwight
Exactly - whether you can use the trick depends on what is connected to
that OC output.
JRJ