I believe this is a DOS driver, but is fron the install disk provided with cd and ide board, version A1.34 REVEAL Products 1994
The following files are found inside the driver download file.
|INSTALL.EXE||44.1 KB||19 Aug 1994|
|MSCDEX.EXE||25.4 KB||10 Feb 1993|
|GCDR420.SYS||7.3 KB||26 Aug 1994|
|GCDR420.DOC||551 bytes||20 Aug 1994|