Re: Apple 3.5 Inch Drive

[spec@vax2.concordia.ca (Mitchell Spector)]

In article buggie@mirac.unm.edu (stephen e buggie) writes...

>>The Basement (swolfe1@mindspring.com) wrote:
>>
>> Will an Apple 3.5" Floppy Model #A9M0106 work on my IIc???
>
>NO ---- you need the white-color Unidisk 3.5 drive.
>
>We need a creative ROM-rewriter to make a custom ROM so that the IIc will
>recognize and use the platinum grey 3.5 drive!

    Rewriting the firmware will not change things, even if you have an 
accelerator chip installed place of the 1 MHz 65C02. As I mentioned in
an earlier post, there are _no_ conventional changes you could perform 
to make the Apple IIc work with the platinum Apple 3.5 drive.

    The Apple IIc Plus is able to use the Apple 3.5 drive because there
is additional circuity and logic built-in on the motherboard to support
this (along with the equivalent of a 4 MHz ZipChip built-in too). Until
someone decides to redesign the IIc motherboard (which would be kind of
redundant, as the IIc Plus is that redesign) or build some complex and 
non-trival adapter interface, the IIc is stuck with the UniDisk 3.5
drive.

Mitchell Spector
spec@vax2.concordia.ca