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From: kanefsky@cs.umn.edu (Steve Kanefsky)
Newsgroups: comp.sys.mac.comm
Subject: Need hardware flow control cable for 512E and V.32/V.42bis modem
Message-ID: <1990Dec1.033152.7268@cs.umn.edu>
Date: 1 Dec 90 03:31:52 GMT
Organization: University of Minnesota, Minneapolis - CSCI Dept.
Lines: 35

I just acquired a 9600 baud, V.32 V.42bis modem, and for the time being
I'm stuck with only a Mac 512E to use it on (i.e. a 9-pin D connector
for the serial port instead of the 8-pin DIN connector).

The modem came with a cable which supports hardware flow control, but
it terminates with the 8-pin DIN connector used on every Mac *except*
the 128, 512, and 512E.

I need one of the following:  

(1) An adaptor which converts the 8-pin DIN connector to the 9-pin D connector
    (i.e. *female* 8-pin DIN to *male* 9-pin D) which preserves the hardware
    flow control.

(2) A cable which goes directly from the modem to the 9-pin D connector on
    the Mac, and WHICH SUPPORTS HARDWARE FLOW CONTROL (I already have one
    which doesn't support hardware flow control).

(3) Directions for how I can convert my non-hardware-flow-control cable to
    a hardware flow control cable.

Can anyone point me to a source for (1) or (2) or supply (3)?  I have my
doubts that (1) or (2) even exist, but who knows?  I'm sure someone can
help with (3).  I've seen pin assignments posted for the 25-pin to 8-pin
cable, but not 25-pin to 9-pin, and even when I ignored the 8-pin side,
it didn't seem that the pins on the 25-pin side matched up at all with
the pin assignments that were posted (either the hardware flow control
pin assignments or the XON/XOFF pin assignments).  Either my cable is
screwed up or I'm not understanding the pin assignments or something.

Thanks in advance for any help anyone can give me on this,

-- 
Steve Kanefsky             
kanefsky@cs.umn.edu