Re: Dead serial ports?

["A.J." <naijireja@yahoo.com>]

I went on a limb and took apart the Mac modem cable.  After all, it was
a custom-built cable (a detail that I left out of this discussion).  I
found out that the DB25 pins were connected very incorrectly.  Pin 1
was connected, which I don't even know what is for, and pins 5 and 6
were omitted.  I also noticed that only 6 of the 8 lines from the
mini-DIN cable were connected.  This certainly wasn't a high-speed
modem cable of any standard configuration.

I will follow the well-known IIGS high-speed modem cable pinouts and
solder this thing myself.  Hopefully, it'll be correct this time.

Aren't cables fun? :(

--A.J.

A.J. wrote:
> Well,
>
> I purchased a Mac modem cable, a PC modem cable, and I made my own
null
> modem adapter exactly according to the FAQ.  Still no go.
>
> I tried several different operating systems, including XP and Linux.
> Nope.  Not one character transferred.
>
> Maybe I should give up on this, as I think that my GS serial ports
are
> dead.  Is there any reliable way to test them?
>
> A.J. wrote:
> > Hi all,
> >
> > How common is it for an Apple IIGS serial port to be dead?  I tried
> > hooking up a null cable assembly to a PC, and no matter what
settings
> I
> > tried (and I did ensure that settings lined up correctly betwen PC
> and
> > GS), I couldn't get the machines to communicate.  I'm using a WinXP
> PC
> > with HyperTerminal.
> >
> > For what it's worth, I'm blaming the cable assembly at this point.
I
> > purchased the following cables and hooked them up together:
> >
> > Apple serial adapter, with 8-DIN male and DB-9 female connectors
> > gender changer, with DB-9 male connectors, and
> > null modem cable, with DB-9 female connectors.
> >
> > I tried omitting the gender changed and null modem cable and things
> > still didn't work.
> > Any ideas?
> > 
> > --naijireja
> > 
> > To reply to me, reverse my username.