I use this driver w/20x Sanyo drive. The driver came with the drive and is on an OEM floppy disk. The zip file has the complete floppy disk contents including INSTALL and README. README indicates it also supports the 254P.
The following files are found inside the driver download file.
|SJCDAPI.SYS||10.5 KB||8 Jun 1995|
|README.TXT||5.2 KB||9 Jun 1995|
|AUTOEXEC.BAT||53 bytes||5 Apr 1998|
|CONFIG.CD||41 bytes||19 Mar 1996|
|AUTOEXEC.CD||52 bytes||16 Apr 1997|
|install.bat||488 bytes||16 Apr 1997|
|CONFIG.SYS||41 bytes||5 Apr 1998|