Re: Handshake cable

[shack@onyx.southwind.net (Randy Shackelford)]

Matt Portune (mportune@telerama.lm.com) wrote:
: John L. Graham (fl332@cleveland.Freenet.Edu) wrote:
: > Ack! I can't remember off the top of my head, but 7 <-> 8 might be
: > the GPi <-> DCD line, if so I don't think it's required unless your
: > computer is serving as the host.

: It says in the spectrum manual, as well as my other texts, that pin 7<->8 
: is required for hardware handshaking.  In fact, it makes a big deal out 
: of it.

Some Mac models, namely the Plus, Classic, and LC, have no connection on pin
7, the general purpose input. I have a 14400 modem on my Plus which handles
57600 bps without it. So I guess it's not strictly required, although since
IIgses have it, Spectrum relies on it. Pin 8 is indeed the DCD signal from the
modem. I use Apple Remote Access on the Plus and it answers calls so guess it's
not needed for a host either.
-- 
Randy Shackelford                                 I was internet
shack@southwind.net                               when internet wasn't cool