I have a Sharp PC-5000 (laptop circa 1983) in the box with the manuals. It worked last time I tried it several years ago. Not sure if I still have the disks but it should be standard DOS. Hate to sell it because it was a gift from another collector (my plan was to give it to the museum) but I really need some money. In my opinion* it's worth a few hundred dollars. * Strictly my personal property and personal opinion about the value; not at all related to VCFed stuff.