Would this count as a null modem cable?

[Muzer]

My A600 came with an Amiga serial port to 9-pin MALE adaptor (not quite sure what it was for, possibly a modem or something). I would then plug this into a standard PC 9-pin serial female --> standard PC 9-pin serial female cable, and plug it into the PC.


Would this work? Or should I just try it and see?

Does any of the transfer software work on UNIX/Linux?

[alexh]

The hint is in the name, NULL MODEM CABLE. Any modem software will work. Find something which supports Zmodem.

As for the Amiga side :

http://wiki.abime.net/transfer:hombre

[prowler]

Originally Posted by Muzer

My A600 came with an Amiga serial port to 9-pin MALE adaptor (not quite sure what it was for, possibly a modem or something). I would then plug this into a standard PC 9-pin serial female --> standard PC 9-pin serial female cable, and plug it into the PC.


Would this work? Or should I just try it and see?

If the standard 9-pin serial female cable is a null modem cable, then it will work. If not, then it won't.

Check this page for the wiring specifications of null modem cables.

[Muzer]

It's the one you used to use for connecting two computers together for a primitive form of network gaming; I remember using it to play Age of Empires around 7 or 8 years ago.


EDIT: One thing I just noticed, not all the pins are connected on the 25 to 9-pin connector (all of the row of 5 are, but in the row of 4, only pin 7 is connected, ie 6, 8 and 9 are not connected). Would this cause it to fail?

EDIT2: No, I can't physically connect them before you ask - the pins are actually absent.


EDIT3: Sorry, ignore me, my memory must be dying. It actually connects to the video port, not the serial port. Oops. This thread should probably be closed...

[prowler]

So the adapter is a 23-pin female D-type to 9-pin male D-type?

[cosmicfrog]

if so then it will be a monitor cable, some Philips monitors have 9 pin connectors on the back

[Muzer]

Originally Posted by prowler

So the adapter is a 23-pin female D-type to 9-pin male D-type?

Yes. As I said, only pins 1, 2, 3, 4, 5 and 7 actually have pins on the 9-pin side.

[prowler]

Hmm...

Monitors have male D-type connectors, so I wonder what is the purpose of this adapter?

[Muzer]

Oh. Now that is perculiar.


On the Amiga end, it has a label:

"Commodore Part No 390681-03"

Does that mean anything to anyone?


EDIT: According to this thread, it's an "Amiga to PC EGA monitor cable."

[prowler]

Originally Posted by Muzer

On the Amiga end, it has a label:

"Commodore Part No 390681-03"

According to this thread, it's an "Amiga to PC EGA monitor cable."

Yep, that's what it is , except

Originally Posted by Jope

Some "newer" models of the 1084 have a 9pin female connector in the back. This is a monitor cable suitable for those monitors.

Mystery solved!

[prowler]

Hey Muzer,

Would you like to sell me that adapter and lead?

[Muzer]

Well, I believe I have no use for it (I lack such a monitor). How much do you think it's worth?

[prowler]

£7 including p&p.

[Muzer]

That's probably sold then .

I'll send it at the weekend since I'm quite busy at the moment.

My paypal e-mail is:

kirks <hyphen> house <at> tiscali <dot> co <dot> uk

(I only use it for paypal and eBay so if you need to contact me, just use PM)

I'll now provide a full description for the record:

Obviously it's untested; as I say, I lack the monitor, but you can have a refund (minus whatever postage turns out to be) if it turns out not to work. I got the A600 that it came with from gamestation a while back (when they still did retro games). The cable has a tiny bit of white paint on it that you could probably scrape off (why do people always redecorate and don't bother unplugging anything before they start painting?) It's also a little yellowed, though I can't really tell how much as I can't tell what colour it started out as

All screws are present and in tact (two at each end). The connectors are in good condition. The original Commodore sticker is on the Amiga end as I say (not sure if there were originally any more stickers but I can't see any signs of an ex-sticker) and is in very good condition (ie, no signs of someone trying to peel it off).

[prowler]

Hi Muzer,

Before I commit to this, can you confirm that this item consists of a 23-pin D-type female to 9-pin D-type male adapter, together with a 9-pin D-type female to 9-pin D-type female cable (though not all pins are present, as discussed earlier)?

[Muzer]

Oh, do you want me to include the 9-pin cable as well? OK.

The 9-pin cable has the screws of one end sawn off (don't ask, long story) but still works fine. The end without the screws also lacks the metal bit that surrounds the plug, so there's a possibility it will fall out of a loose socket, though I have yet to find one loose like that (it's not loose when plugged into the video cable (it's looser than the other end obviously but as a test I plugged it in and shook it around and it didn't come out)).


Can I ask, out of interest, what you want the 9-pin one for?



But yes, if you want the 9-pin one as well, it consists of a Commodore 390681-03 (I'd guess about 1.75m long) with a 23-pin D female connector on one end and a 9-pin D male connector on the other end. The 9-pin serial cable is a null modem cable (both sides female, designed to connect two computers together. Also happens to work with the LEGO Mindstorms RIS 1.0/1.5 serial tower).

[prowler]

It seems we are talking at cross purposes here, but it's my fault - not yours.

Originally Posted by Muzer

I consists of a Commodore 390681-03 (I'd guess about 1.75m long) with a 23-pin D female connector on one end and a 9-pin D male connector on the other end.

That describes exactly what I thought I was buying (except that the 9-pin end is male and not female, but I can add a gender-changer to that).

When you described this as an adapter, I thought it was an all-in-one shell, rather like a 25-pin D-type to 9-pin D-type serial port adapter.

Now that I realize it's a cable, I shall not require the 9-pin lead as well. (The 9-pin lead would not have been much use as a monitor cable anyway, as it's wired for a null modem.)

So, I will pay you £7 inclusive of p&p for the 23-pin to 9-pin Commodore 390681-03 1.75m long lead.

[prowler]

Originally Posted by prowler

So, I will pay you £7 inclusive of p&p for the 23-pin to 9-pin Commodore 390681-03 1.75m long lead.

Is that alright, mate?

[Muzer]

Yes, that's fine

As I said, I'll only get round to actually posting it at the weekend, feel free to pay me any time before that.


I'm glad I get to keep the null modem cable though - I'd grown rather fond of that for some odd reason.

[prowler]

Payment sent.

I'll PM you with my address details.

Thanks.