DIRECT CONTROL OF PC SERIAL LINES USING MSCOMM

摘要

THERE seems to be an ever growing list of "golden oldie" components that have been regularly used in home constructor projects, but are no longer manufactured. The 6402 UART now seems to have joined this group, as do the various equivalents and near equivalent chips that were in plentiful supply not so long ago. These chips may turn up on the surplus market from time to time, and many constructors probably have one or two in their spares box. However, these chips are now non-starters for new designs. Unfortunately, there seems to be nothing directly comparable that is still available.