Re: What's wrong with Revision B SCSI?

["Brendon Woirhaye" <bytre@hotmail.com>]

Mine does not have a label.  I bet it probably is a C, because I am able to
boot into GS/OS 6.0.1 with the drivers.

The card is labelled as a B, but the eprom does not have a label.

"David Empson" <dempson@actrix.gen.nz> wrote in message
1euk22l.1cufm0utm0800N%dempson@actrix.gen.nz">news:1euk22l.1cufm0utm0800N%dempson@actrix.gen.nz...
> The Byter <cabalslexicon@hotmaill.com> wrote:
>
> > Well, after a few trials I did get it working with GS/OS 6.0.1.  Is it
> > only the format thing, or is there some other problem I should be
> > seeing?  Is it possible that I have updated firmware?  How do I tell?
>
> If you were able to boot into GS/OS without patching any system
> software, then it is most likely that you already have the revision C
> firmware.
>
> If you have an original Apple SCSI card with revision A or B firmware
> and you try to boot GS/OS, you will get an error message about the
> firmware not being supported, and the card will be ignored.
>
> There is a possible exception to this: if you booted from the hard drive
> _and_ you don't have the SCSI drivers installed on the hard drive, then
> GS/OS might let you boot with limited functionality: you won't be able
> to access anything except the first partition (and floppy drives).
>
> This is how it behaves with the High-Speed SCSI card (or revision C
> firmware in the original card) if you don't have the SCSI drivers
> installed.  I'm not sure whether the check for the revision A/B firmware
> is part of the system itself or part of the SCSI drivers.
>
> If you boot from a floppy which has no SCSI drivers, the SCSI card is
> ignored completely, no matter which firmware revision it contains.
>
> To check the firmware revision of your card, look at the label on the
> EPROM (assuming it is an original Apple EPROM or has at least been
> labelled correctly if burned by someone else):
>
> 341-0112A is revision A
> 341-0112B is revision B
> 341-0437-A is revision C
>