Patch-ID# 100873-02
Keywords: Exabyte, SCSI, panic ,zero devide, uninitialised
Synopsis: SunOS 4.1.2;4.1.3: PANICS ACCESSING EXABYTE DRIVE ON SUN4
Date: Aug/02/94
 
SunOS release: 4.1.2 4.1.3
 
Unbundled Product: 
 
Unbundled Release:
 
Topic: Fixes problem accessing Exabyte Drive
 
BugId's fixed with this patch: 1100858

Relevant Architecture: sparc
    NOTE: sun4 sun4c sun4m

Obsoleted by: 

Changes incorporated in this version:

Problem Description:
BUG ID 1100858:	8MM tape problem resolved in 4.1.2 but still exists in 4.1.3: panics  zero
		divide trap when tape drive uninitialised

SunOS4.1.2 on a 4/470 with internal Sun 8mm tape panics with 
`dd': zero divide trap:, out of st_have_window, if and only if
the tape drive has not been accessed since last boot.

INSTALL:

As root:

Save the old version of the module as a precaution:
mv /sys/`arch -k`/OBJ/st.o /sys/`arch -k`/OBJ/st.o.FCS

Install the new version with:
cp `arch -k`/4.1.x/st.o /sys/`arch -k`/OBJ/st.o

SRC INSTALLATION NOTE:
	If you wish to install the st.c file in the sys
	directory to arrange for its recompilation:
	On SUN4:
		Install sundev/st.c
	On SUN4C & SUN4M:
		Install scsi/targets/st.c

Run /etc/config on your kernel and do a make. Install the newly configured
vmunix and reboot. Refer to the Systems and Network administrations manual
on how to configure a kernel.
