Taken from the Matsu****a Panasonic FTP site. Windows 95/98 device driver support
DRIVER Ver.sp20 (6/17/99)
Windows 95 device driver Bus Master support and available to over 4GB access (for Windows95 4.00.950/950A only)
Windows95 4.00.950B/950C-When you use a SR-8581 or a MPEG2 decoder card of MKE, the introduction of this file is required.
Windows98-When you use a MPEG2 decoder card of MKE, the introduction of this file is required.