Re: Upgrading an Apple //c

[Michael Flynt <michaelflynt@delphi.com>]

Hickey / Michael Gerard (ISE) <u901841@student.canberra.edu.au> writes:
 
>What gives? I thought that the original //c had the right circuitry to
>drive a Unidisk 3.5 but all it needed was a ROM UG!
 
 
I'm not completely certain, but <dramatic music> I think that the unidisk
rom is 32k bytes while the original //c has only 16k bytes. The motherboard
might be different. ??? Anybody else got an idea? Yes, it is true. I just
checked the manual, and it is likely you need more than just a rom chip to
upgrade as you motherboard probably doesn't know how to access the second
rom bank. Probably one of the pins isn't connected???