memcal question:Multiple maps on one chip

[delcowizzid]

you will need a 27C512 for 2 vr manual tunes and you lift a totally different pin and use the same 4.7k or 10k pullup resistor and wire to switch.diagrams are here for other chip sizes and what pins to switch. delcohacking.net • View topic - Eprom memory bank switching you want to use the second pic down for 2 vr manual bins on one chip.

 

[theSeekerr]

Thanks, wasn't sure what size a VR bin is, haven't gotten around to opening it up to take a look yet.