Building a Z80 computer after completing one with 65c02.
Z80 on my project needs some pins to be tied high (INT, NMI, WAIT, BUSRQ), these are the ones that I don't need for the time being. There are many diagrams where these are directly connected to 5v Vcc, and many others they are connect to Vcc via a resistor of up to 1K.
Datasheet wasn't helpful in deciding whether I needed resistors or not (or perhaps my limited knowledge).
What is the correct approach here ? Are the resistors definitely needed ? Or my circuit is working just by sheer luck and about to fry any moment ?