[comp.sys.apple2] memory expansion board question

jimo@rosevax.Rosemount.COM (The Eternal Optimist @ the Infernal Machine) (11/02/90)

I recently got an Apple 2c Memory Expansion Card at a 
sale. It contains 256K of Hitachi HM50256P-15 chips.  The big question
I have is this - According to the installation guide (box was unopened)
it says to use only memory chips with an "A" by pin 1.
I'm guessing that Apple qualified these chips.  But could I use
Hitachi HM50256 or any equivalent chips?  I'm thinking yes, but I've 
found out more information by posting here than asking apple types locally.

Also - someone was selling 64K's cheap.  I could use them also, right??
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