Re: Does ROM 3 GS works with System 5?

[limtc <thyechean@gmail.com>]

Oh, I got 4MB RAM card, and no SCSI card (and nothing else). Based on
the analysis, probably bad RAM?

On Mar 24, 2:59 pm, Mitchell Spector <mitch...@hotmail.com> wrote:

>     It's certainly not an incompatibility. The ROM 3 firmware actually
> contains the System 5.0.x toolsets built-in (versus the System 2.x in
> the ROM 01) and that particular OS version is aware of the ROM 3
> (note the "TS3" patch that load in at boot). System 5 disks even
> shipped with ROM 3 systems when Apple sold them.
>
>     It could be bad RAM. It could also be that your booting floppies
> on a stock machine that has _less_ RAM than expected by certain
> programs. Remember there is only 1152K RAM built-in, versus
> 1280K you get with a ROM 01 with a fully populated Apple memory
> card installed (I remember several demos would crash if that extra
> 128K was missing).
>
>     Another possibility, since you mentioned booting off floppy disks.
> Do you have a RamFAST SCSI controller? I know a number of old
> ProDOS 16 disks would crash unless I force disabled it (setting slot
> number 7 to "Your Card"). Can't remember any System 5 disks
> crashing though, maybe it is a RAM issue...
>
> Mitchell Spector