Re: Switching chips ...

[david@uow.edu.au (David Wilson)]

"Byron Q. Desnoyers Winmill" <wbdesnoy@acs.ucalgary.ca> writes:
>There are two Apple ][ computers, one is a //e and the second is a
>//c.  The //e works perfectly while the //c displays garbage on the
>screen.

>Now my questions are:
>  - How safe is it to replace the 6502 in the //e with the //c's
>    65c02?  (The //e is my favorite. :-)

Provided you know how to remove and insert chips without breaking their legs
or inserting them backwards, this will work perfectly. All my //e computers
have had 65c02 chips inserted into them after I got them (my clone //e has
a 65802).

>  - Would it be possible to place the //e's video BIOS into the //c?
>    (The //c has the serial port.  :-(

Two possible problems - if the //e is not enhanced (indicated by the 6502)
then it will not have mousetext in its character generator ROM so you will
not have this functionality if you put the //e video ROM in the //c.

The other problem depends on the //e and the //c (some have 2764 (28 pin)
video ROMs while others have 2732 (24 pin)). Provided your two machines
have the same size chip it will work.
--
David Wilson	Dept CompSci Uni Wollongong Australia	david@cs.uow.edu.au