Evergreen Technologies, Inc.
915. NW Eighth Street,
Corvallis, OR, USA 97330-6211
Phone: (541) 757-0934, FAX: (541) 757-7350

486 Upgrade processor information: https://www.evertech.com/486up.html

Evergreen diagnostics: https://www.evertech.com/files.html

FTP directory of diagnostics: ftp://ftp.evertech.com/pub/utils

Filename of diagnostics ultility: etiutils.exe

FreeDOS homepage: https://www.freedos.org/

Caldera DR-DOS (evaluation): https://www.caldera.com/dos/