theese are old web mirror, please don't send mail to the author. the pv-backup is a device that you can upload rom by parallel port (epp 1.9), it's use edo simm72 pin. the pv-backup support at last 32MB of ram. yuo can build yourself by following the electric schemes. this is the first web site. http://infrid.altervista.org/mirror/pv-backup/procomru/default.htm this is the second one... http://infrid.altervista.org/mirror/pv-backup/gamesys/default.htm sorry for may bad english bye
