Quick one for the crowd. On a 27C256, I have always thought you could ignore Vpp for normal use, and only use it for programming.
So, you could plug a 27C256 where the main rom lives in a T102 or T200, or UK M100, or KC-85, or M10. whew. However, when I look at datasheets for 27C256, they all say normal condition on pin 1 is VCC!!! What gives? Is it ok to float pin 1, or really should we be connecting pin 1 to plus 5V? thanks Steve
