27c010 vs 27c020 pinouts - same?

Tormenter · Post by **Tormenter** » Wed Jan 28, 2009 2:26 pm

I noticed on the 27c010 it doesnt have the "A17" listed where it is listed on the 27c020. If I were to purchase 010's, would those wire the exact same way, or would I have to do something special with the A17?

RetroHacker · Post by **RetroHacker** » Wed Jan 28, 2009 4:28 pm

27010's don't have A17. That pin, pin 30, is simply not connected to anything on those chips. That extra address bit is used on the 27020, however, because it needs it to select the upper bank.

So, yeah, the wiring would be pretty much the same - the 010 is just half the size of the 020, so no A17.

-Ian