jhc@mtune.UUCP (Jonathan Clark) (05/07/86)
In article <687@down.FUN> honey@down.UUCP writes: >the modem wants hardware flow control, but unix drivers tend >not to support it. (i am told there is a vax hardware problem The problem is that the DZ does not support the CTS and RTS pins (they are strapped to DCD and DTR respectively, if I remember correctly). There are inventive solutions to this, mostly involving the Ring Indicator pin (which the DZ does support). We use changeover cables which convert CTS on the modem side to RI on the DZ. Other people have re-wired their DZ breakout panels. We run specially hacked KMC microcode (sorry - it's proprietary I think) which uses RI as a out-bound flow control pin. Presumably one could modify the driver and use special cables to use DTR as a in-bound flow control lead, but I don't know of anyone who has done that. Time for my favourite plea - Please everyone start supporting CTS/RTS flow control - it solves so many problems! -- Jonathan Clark [NAC,attmail]!mtune!jhc My walk has become rather more silly lately.