Altos 386/1000 - anyone got install media?

[Gordon JC Pearce]

Hi there,
  I've just got an Altos 386/1000 with what appears to be 14M of memory,
an expansion board with four RS232 ports and possibly two AUI ports (one
is certainly AUI), and a 300-odd Mb hard drive that I suspect is dying.

Does anyone have a copy of some install media for this?  I would like to
try another, healthier (and possibly quieter) SCSI drive in the old beast.
 I think it probably boots an installer from tape, but there is a 5.25"
floppy drive as well.

Thanks folks,
  Gordon JC Pearce.