Re: Apple IIc Plus woes

[Red <zap@dd.tv>]

OK, I'm straight now.  I read some of the spec sheets and figured it all
out.  Apparently the beast contains an Apple 3.5" drive, as the IIc+ has the
necessary circuitry to (and the additional 2K SRAM to handle the incoming
data stream).  
Now my task is easy - these Apple 3.5" drives should be a dime a dozen -
most local used MAC shops are dying to get rid of their dusty old stock.
Thanks again.
Henry


On 12/5/02 12:57 AM, in article 3DEEEAC2.2070106@telus.spamless.net, "Wayne
Stewart" <waynes@telus.spamless.net> wrote:

> 
> 
> Big wrote:
>> Cool thanks.  I'm on the lookout for dead Mac SEs and the like...
>> It appears you're right - the IWM chip in the IIc+ should be able to
>> recognize
>> the Apple 800 K drive.  But will the 800 K drive recognize disks, read from
>> and
>> write to disks created on the original IIc+ UniDisk drive?
> 
> The built-in drive in the IIc+ isn't a UniDisk. UniDisks are external
> drives that have a 65C02 on the daisychain board. The reason given was
> because the 1mhz Apple IIs were considered too slow to handle the 3.5"
> drive. In theory the drive in the IIc+ should be faster than the 3.5"
> UniDisks because the UniDisks use a 4:1 interleave while the IIc+ can
> happily use a 2:1 interleave. One problem though, most 8 bit software
> formats 4:1. Some will recognize being run on a IIgs and format 2:1 but
> on an 8 bit Apple II format 4:1 no matter what interleave your floppy
> drive will handle.
> 
> In any case all the Apple made 800k drives use the same mechanism.
> 
> 
> Wayne
>