🚀 go-pugleaf

For anyone who is interested in this sort of thing:
Yes, I have a few Mac II FDHD upgrades left. I'll sell you the chips (ROM 
and SWIM) for $100. You can then pick up any HD Mac Floppy drive, or you 
can buy my last one (which I really don't want to sell) for another $100 
plus shipping. Shipping included on chips, not on drive.

Reply as soon as possible - Spectre@utdallas.edu   
Spectre@gammabbs.uucp.netcom.com



Dave Wells (wellsian@netgate.net) wrote:
> In article <43f6vk$fn5@alba.roble.com>, marquis@roble.com (Roger Marquis) wrote:

> > Has anyone upgraded a Mac II motherboard?  I've got a customer with an
> > original Mac II (68000, low density floppy, etc.) and they'd like to
> > upgrade just the motherboard and floppy drive (68020 or better, 1.4Mb).
> > Any reasonable offer...
> > 
> > Roger Marquis
> > (marquis@roble.com)

> Uh, the Mac II had a 68020.  The Mac IIx had a 68030 and 1.4MB drives.
> They both run at ~16MHz.  To upgrade a II to the functional equivalent of
> a IIx requirs a FDHD Drive upgrade kit, consisting of a high density drive
> and updated ROMs.  Oh yea, you would also need a PMMU to allow the use of
> virtual memory or to run A/UX (Apple's Unix).  You might put out an alert
> to see what people have, but I seem to remember the drive kits drying up a
> year or two ago.  Upgrading to a IIx logic board with the 030 has the
> PMMU built-in, and doesn't need the ROM update for the 1.4MB drives.
> Unfortunately, it still leaves them without a 1.4MB drive.  One can
> probably be had cheaply.

> So, the options are:
> a) Keep Mac II logic board
>    Get 1.4MB drive
>    Get updated ROMs to allow use of the above drive.
>    (optional) Get PMMU to allow the use of VM, RAM doubler, or A/UX.

> b) Upgrade Mac II logic board to IIx logic board (find one somewhere)
>    (this will already have the ROM upgrade and the PMMU)
>    Get 1.4MB drive

> Hope that helps.

> Dave
-- 
Spectre@UTDallas.Edu - Home of the stark raving mad.