For serial programming purposes I need to keep PSEN low, EA and RST high.
If I run a pull-up through a switch to EA and RST and the same line through a negator to PSEN, I get the result with one switch, but once disconnected/grounded it will go high for whole runtime duration. PSEN or OR should be still able to sink it keeping solution (1) working. Right?
Instead of this jumble of circuitry, why not just install NoTouch ?

Erik