Subject: Re: NetBSD 1.6 doesn't install on Mac IIci with 4GB HD
To: Riccardo Mottola <zuse@libero.it>
From: Michael G. Schabert <mikeride@mac.com>
List: port-mac68k
Date: 02/23/2003 17:57:19
>  > In any case, the Mac IIs can only go to 20 MBs and the IIx to 32
>>  MBs. Not sure where the IIci falls.
>No, both the IIci and the II can go up to 128 MB. But the IIci takes
>"normal" SIMMS.

Yeah, actually the II, IIx, and IIci all can go to 128MBs of RAM.

>  The II requires a special signal to be able to handle simms
>gretater than 1MB (or was it 2MB?).

You must have a PMMU in order to address more than 8MB of RAM. SIMMs 
greater than 4MB must be PAL or have a "timing compensation circuit".

Similarly, some (but not all) IIci machines require Parity RAM (look 
for a large parity IC to the left of the SIMM banks).

Mike
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