Re: What about II GS ROM04 ?

[dempson@actrix.gen.nz (David Empson)]

In article <auri-0608960740380001@news.transport.com>, auri@woz.org (Auri
Rahimzadeh (Auri Man)) wrote:

>> More of a fizz than a bang! IIgs with internal SCSI HD (40 MB) and 800K
>> drive, Simm slots. Otherwise as ROM 03. Sound recording standard (no silly
>> daughterboards).
>
>Not an 800k drive, a 1.44 without drivers in the OS :P

The drivers should be in the operating system (GS/OS), but not in the
firmware, so you can only access 800K and 400K disks in ProDOS-8, but it
should be possible to access 720K and 1.44MB disks under GS/OS.

(I am assuming that the most recent GS/OS AppleDisk3.5 driver supports any
ROM 4 disk controller hardware extensions that would be needed to handle a
high density drive.  If not, the fact that it is a SuperDrive is a moot
point.)

>It also had a redesigned motherboard, external SCSI on the back, a Piezo
>speaker, better sound circuitry (no noise supposedly), and a few other
>goodies that made it real spiffy :)

It was still only a prototype - the SCSI hardware was implemented by
embedding the High-Speed SCSI card onto the motherboard, complete with its
own ROM.  I expect that this would have been tidied up if the machine had
made it into production (along with other improvements, such as firmware
support for HD 3.5" disks).

-- 
David Empson
dempson@actrix.gen.nz
Snail Mail: P.O. Box 27-103, Wellington, New Zealand