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From: jim@jagubox.gsfc.nasa.gov (Jim Jagielski)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Mac II - Floppy upgrade
Message-ID: <4959@dftsrv.gsfc.nasa.gov>
Date: 18 Apr 91 11:32:37 GMT
References: <3070@sparko.gwu.edu> <4943@dftsrv.gsfc.nasa.gov> <17613@venera.isi.edu>
Sender: news@dftsrv.gsfc.nasa.gov
Reply-To: jim@jagubox.gsfc.nasa.gov (Jim Jagielski)
Organization: NASA/Goddard Space Flight Center
Lines: 34

In article <17613@venera.isi.edu> jas@ISI.EDU (Jeff Sullivan) writes:
}In article <4943@dftsrv.gsfc.nasa.gov> jim@jagubox.gsfc.nasa.gov (Jim Jagielski) writes:
}
}>In article <3070@sparko.gwu.edu> waire@seas.gwu.edu (Timothy A. Waire Jr.) writes:
}>}  /* question about FDHD upgrade for MacII */
}>}
}>
}>yep... it's called the MacII FDHD ROM Upgrade. It includes new IIx-type ROMS
}>as well as a new SWIM (floppy controller) chip. This is required to USE the
}>"new" FDHD SuperDrive drives. However, you must then buy the FDHD DRIVE itself.
}>The ROM upgrade doesn't make your 800K drive able to read/write the 1.4M
}>format, it just enables you to use the type drives that can!
}>
}>Price: ROM Upgrade ~$70 - ~$100 (w/ return of old chips)
}>     FDHD drive ~$350 - ~$450
}
}Does this turn my II into a (slightly) faster IIx?  Is there any other
}difference but the FDHD capacity?  Is the update 32-bit clean? (ha!)
}

Actually, the MacII will still be a bit slower, due to the memory wait states.
The ROM upgrade is also required for some 68030 upgrades since the MacII ROM
won't recognize the internal PMMU "chip" and will look for and expect an
external one. Using 4MB RAM SIMMs also require the upgrade.

32-bit clean... Ha! :)
--
===========================================================================
#include <std/disclaimer.h>
                                 =:^)
           Jim Jagielski                    NASA/GSFC, Code 711.1
     jim@jagubox.gsfc.nasa.gov               Greenbelt, MD 20771

 "I object to all this sex on the television. I mean, I keep falling off!"