6502 replace a 6507...?

[markdil]

I would like to use a 6502 to replace a 6507. Will it work?? And if so,
I would have pins 1, 3, 4, 5, 6, 7, 35, 36, 38 to deal with on the 6502.
There are pins 23, 24,25 which are A13, A14, A15 which I assume just
go to ground. Any help would be appreciated.

[GARTHWILSON]

You'll have to make a pin-out adapter, probably best done with a 28-pin DIP header and a 40-pin socket, using thin wire (like wire-wrap wire) to make the various connections since they're in different orders. Definitely do not connect the address lines to ground. Those are outputs which will go unused.

[keith]

The 6507 is a 6502 in a 28-pin package.

The silicon is the same for both, only some of the signals are not taken to pins on the 6507.

I used a 6502 when I copied a disk doubler for the Atari 105 disk drive, which normally uses a 6507.

it worked fine.