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Re: 3.5 controller in the //c+
- Subject: Re: 3.5 controller in the //c+
- From: David Wilson <david@uow.edu.au>
- Date: 25 Jun 2005 23:40:58 +1000
- Newsgroups: comp.sys.apple2
- Organization: University of Wollongong
- References: <250620050815056756%lockar@apple2forever.DOTorg>
- User-agent: nn/6.6.5
- Xref: g2news1.google.com comp.sys.apple2:12455
Lockar <lockar@apple2forever.DOTorg> writes:
> What kind of controller is in the Apple //c+? I was wondering
>because I know it's differnt then the one in the //gs. What made it
>speical that you couldn't do bit copy with it (along with some copy
>protection on 3.5 disks).
The same IWM is used in the IIc, IIc+ and IIgs. The IIc+ has additional
hardware (a dedicated 2KB RAM chip plus logic) to allow it to use
Apple 3.5 drives even at 1MHz CPU clock speed.
--
David Wilson School of IT & CS, Uni of Wollongong, Australia