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Re: Getting a IIgs to play nice with a Mac
David Empson wrote:
> William Sidebottom <wmsidebottom@bigpond.com> wrote:
>
>> if you get a straight through cable like the one that goes between a
>> imagewriter II & a mac plus, this should let you use appletalk, because
>> it works between 2 mac plus's
>
> That's actually a crossover cable. The only Mini-Din-8 serial cables
> that are straight through should be extender cables.
>
> There may be some obscure devices which have a reversed pinout, but
> Apple sensibly chose to use the same pinout for the Mini-Din-8 serial
> connector in all their major products, resulting in a single cable
> standard.
>
> Yes, it will work between a IIgs and Mac. I have exactly that setup
> between my IIgs and PowerMac 8600.
>
> Some third party devices which support AppleTalk might not work with a
> directly connected serial cable (I think this might affect some HP
> printers). In this case you need real AppleTalk cabling, with drop boxes
> and isolated connections (or a third party equivalent, such as
> PhoneNet).
>
>> <aiiadict@gmail.com> wrote in message
>> 1173941555.825109.109480@e1g2000hsg.googlegroups.com">news:1173941555.825109.109480@e1g2000hsg.googlegroups.com...
>> > On Mar 14, 11:30 pm, Tristan Mumford <xtristan.xmumf...@xgmail.xcom>
>> > wrote:
>> >> I'm using a couple of apple serial to serial adaptors. I'm doing it
>> >> because I don't have an apple to apple cable. Would this be the
>> >> problem?
>> >
>> > good chance...
>
> Very good chance. A pair of Mini-Din-8 to DE-9 or DB-25 adapters would
> only work together if you used a crossover serial cable between them.
I was trying with a mini-din to D9 M on one and mini-din to D9 F on the
other.
I can confirm the Male D9 one is fine straight off. I've used it for ADT,
ZModem etc.
..As for the one with the D9 F, err... I'm not sure where it came from. I
suspect it came with the mac plus and an Apple A3 dot matrix which I
unfortunately no longer have.
>
> AppleTalk with a "null modem" cable only requires the data lines and
> ground.
>
> If you use a Mini-Din-8 to Serial adapter you are also clobbering half
> the balanced serial signal (the RX+ input is grounded and the TX+ output
> is not connected) but it will probably work as long as you end up with
> the ground lines connected and Tx/Rx crossed over.
There is a chance it could work because of the way the signals are converted
but I'm less than sure.
Anyway, I found where to get the right mini-dins for AU$1.50 each so I'm
going to order them in a couple of weeks time.
There is one thing that I'm curious about. If I can get data across via the
double serial adaptor, there would be at least a slight chance I could get
appletalk working, right? I haven't tried that yet.
I'm hoping that I can find the other mac to PC adaptor that came with a Palm
cradle that I think I have. It would make things a little easier.
Tristan.
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