Re: Apple 3.5 drive -> Mac 512K?

[shack@deimos.frii.com (Randy Shackelford)]

In article <5n4akg$us8@uni.library.ucla.edu>,  <pubpc1@library.ucla.edu> wrote:
>LOSETHECAPITALWORDSedhel@bigfoot.com (Edhel Iaur, Esq.) wrote:
>>I heard the Apple 3.5 drive used with a IIgs can work with Macs.  Will
>>it work on my Macintosh 512K?
>
>Yes it will.  Make sure that it is a REAL Apple 3.5 drive, though.
>A UniDisk 3.5 won't like the Mac.  In fact, a UniDisk 3.5 does not
>work well on a GS either (constant on and off of the drive motor
>so that the Finder can keep track of disk swaps, slow access, must
>use 4:1 interleave to compensate for slow access).

Early 512s, model M0001W, only support 400K floppies. 512E's, model M0001E,
can support 400K and 800K drives. The difference? 512s have 64K of ROM while
512E's have the same 128K ROM as a Mac Plus. 512E's have an internal 800K
floppy, another way to distinguish 'em from a regular 512.
-- 
Randy Shackelford                                 
shack@frii.com