PREPROM-03 is an Elnec EPROM/Flash 8-gang multiprogrammer.
Discontinuation and support
Elnec’s discontinued-products archive lists discontinuation in 04/1999. The archive lists 06/2008 in its software-support date field; check Elnec for current status. Its listed replacement or solution is ELNEC Production Programmers. Replacement does not guarantee identical device coverage.
Check the exact device, package, programming operation, adapter, software version and computer interface in the manufacturer's documentation before use.
Sources: Elnec discontinued products and support; Elnec software and manuals.