If you’re into making I/O cards for the RC2014 than this enhanced prototype board might be of interest to you.
It features circuitry (see schematic) to for selectable decoding the I/O address and also gates to generate !IORD and !IOWR signals, as well as two spare OR gates.
The IC’s used are:
74LS32 Quad OR gate
74LS688 Octal (8-bit) magnitude comparator