Sharp PC-G850VS

[rprosperi]

@Dave - Though I don't know for sure, it's likely that this is indeed the same issue, as the E500 and the G850V are really the same family internally, and these things tended to be implemented the same way. And when these were initially developed, hardware handshake lines were commonly used with RTS/CTS, etc. and you need either cables with all the lines, or fake them with pull-ups, etc.