                              EPSON AMERICA, INC.
                           Product Support Bulletin


Subject: Equity and Apex Series Compatibility with the Sysgen OmniBridge 
Controller and BridgeFiler External Floppy Drives

Date: 04/11/90                                          PSB No: S-0088B
Page: 1 of 3                                            Originator: KAS


The purpose of this bulletin is to provide the results of compatibility testing 
conducted by the Computer Product Support Center with the Sysgen OmniBridge
controller and Bridge-Filer external floppy disk drives.


Model           Comments

Equity I	The Equity I was found compatible with the OmniBridge
                controller. It was able to support one or two external
                disk drives (daisychained) together. The external drives
                could be used as high density (1.2M and 1.44M) or
                normal (360K and 720K) disk drives.

Equity II       The Equity II was found to be totally incompatible with
                the OmniBridge controller.

Equity lll      The Equity III was found compatible with the OmniBridge
                controller. It was able to support one or two external
                disk drives (daisychained) together. The external drives
                could be used as high density (1.2M and 1.44M) or
                normal (360K and 720K) disk drives.

Equity I+       The Equity I+ was found compatible with the
                OmniBridge controller. It was able to support one or
                two external disk drives (daisychained) together. The
                external drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.

Equity Ie       The Equity le was found compatible with the OmniBridge
                controller. It was able to support only one external
                floppy drive, unlike the other models tested. The drive
                could be used as a high density (1.2Mb and 1.44Mb) or
                normal (360K and 720K) disk drive.


                                                        PSB No: S-0088B
                                                        Page: 2 of 3


Equity II+      The Equity II+ was found compatible with the
                OmniBridge controller. It was able to support one or
                two external disk drives (daisychained) together. The
                external drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.

Equity IIe      The Equity IIe was found compatible with the
                OmniBridge controller. It was able to support one or
                two external disk drives (daisychained) together. The
                external drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.

Equity III+     The Equity III+ was found compatible with the
                OmniBridge controller. It was able to support one or
                two external disk drives (daisychained) together. The
                external drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.

Equity 386SX	The Equity 386SX was found compatible with the
                OmniBridge controller. It was able to support one or
                two external disk drives (daisychained) together. The
                external drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.

Equity 386/20	The Equity 386/20 was found compatible with the
                OmniBridge controller. It was able to support one or
                two external disk drives (daisychained) together. The
                extemal drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.

APEX            The Epson APEX was found compatible with the
                OmniBridge controller. It was able to support one or
                two extemal disk drives (daisychained) together. The
                external drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.

APEX+           The Epson APEX was found compatible with the
                OmniBridge controller. It was able to support one or
                two external disk drives (daisychained) together. The
                external drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.


                                                        PSB No: S-0088B
                                                        Page: 3 of 3


APEX 100        The Epson APEX 100 was found compatible with the
                OmniBridge controller. It was able to support one or
                two external disk drives (daisychained) together. The
                external drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.

APEX 200        The Epson APEX 200 was found compatible with the
                OmniBridge controller. It was able to support one or
                two external disk drives (daisychained) together. The
                external drives could be used as high density (1.2M and
                1.44M) or normal (360K and 720K) disk drives.
                

NOTE:	The recommended switch settings for the OmniBridge controller are
	as follows:

                1-1 DOWN        2-1 DOWN
                1-2 DOWN        2 - 2 DOWN
                1-3 DOWN        2-3 UP
                1-4 DOWN        2-4 UP

These settings select NO ADDRESS for the OmniBridge BIOS and 
allow it to coexist with the internal FDC of the computer in which it 
is being installed. This way you do not need to disable the internal 
FDC or connect any cables from the OmniBridge to internal floppy 
drives. This was found to be a universal setting for all of the 
computers listed above as compatible with the OmniBridge controller.
