Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!husc6!hao!ames!ucbcad!zen!ucbvax!hplabs!well!dsmall From: dsmall@well.UUCP (David Small) Newsgroups: comp.sys.mac,comp.sys.atari.st Subject: Re: Magic Sac Message-ID: <4537@well.UUCP> Date: Thu, 26-Nov-87 02:52:35 EST Article-I.D.: well.4537 Posted: Thu Nov 26 02:52:35 1987 Date-Received: Sun, 29-Nov-87 16:02:02 EST References: <460@aucs.UUCP> <57900011@sfu_cmpt> <1275@csib.csi.UUCP> Lines: 25 Xref: mnetor comp.sys.mac:10332 comp.sys.atari.st:6502 UUCP> Sender: Reply-To: dsmall@well.UUCP (David Small) Followup-To: Distribution: Organization: Whole Earth 'Lectronic Link, Sausalito, CA Keywords: In the referenced article, Dave Hawkins is mentioning our policy towards upgrades of the Magic Sac (64K -> 128K ROMs). Dave is running into a problem that's really based in our trying to explain to users the differences between 64K and 128K ROMS. The big difference is the HFS file system, which is supported for 64K ROMs (and thus the Magic Sac) by "Hard Disk 20", a sort of RAM-based HFS patch from Apple. The other differences, such as zoom boxes, sped-up Quickdraw, rom-resident routines, and so forth found in the 128K ROMs are not supported by the Magic Sac. The HFS support is what is meant by "will be made up in software". We didn't mean to confuse anyone, it's just very difficult to explain HFS, MFS, and HD-20 to a casual user. We haven't done any work on a 128K ROM version Magic Sac; our present efforts are towards IBM PC cards that read/write Mac disks. I hope this clears up any confusion we might have caused. -- Thanks, Dave Dave Small / Engineer / Data Pacific