I/O port plug.

Devlin · Post by **Devlin** » Thu Apr 19, 2007 5:42 pm

Hi,
Anybody know where I can buy A plug that will connect to the I/O port?
I want a plug that can be connected to a circuit board. like the plug on a modem.
Or does anyone know the correct name of this part?

carlsson · Post by **carlsson** » Fri Apr 20, 2007 3:42 am

Are you referring to the user port? It is a double sided connector with a total of 24 pins, pitch 0.156" (3.96 mm). Digi-Key part number EDC307240-ND. It costs $3.47 a piece if you order just one.

For that matter, the tape connector (and IEEE as found on PETs) also have the same spacing. If I understand correctly, the cartridge port also uses 0.156" pitch but of course the reverse combination of genders.

http://members.tripod.com/~petlibrary/PLUGS.HTM

Jogi · Post by **Jogi** » Fri Apr 20, 2007 11:04 am

Hi,

1. http://www.allelectronics.com
2. search "CAT# cc-500"

Regards Jogi

carlsson · Post by **carlsson** » Fri Apr 20, 2007 1:18 pm

What is that cable used for, i.e. which signals go in the 5-pin DIN? On the other site, I read about some special cable that has a 6-pin DIN in one end and a card edge connector in the other. It was meant to connect a VIC/64 to a PET, and use the PET as an IEEE slave device.

jbuonacc · Post by **jbuonacc** » Fri Apr 20, 2007 4:21 pm

Jogi wrote: 1. http://www.allelectronics.com
2. search "CAT# cc-500"

thank you!!!

EDIT: just ordered a handful of them, i'll update when they arrive. probably should've inquired about what pins are connected internally, but i figured even the parts alone are worth more to me than $1.50 each.

Devlin · Post by **Devlin** » Sun Apr 22, 2007 11:28 pm

Yes it was the plug for the I/O user port.

So you are correct 24 pins.

Now I see the part on digi tech. Looks good,but was that just the plug?
If so the I now know how to get a hold of it. With this I assume it can be glued or somehow connected to a breadboard that is cut and adujsted to fit in to port.

Okay the other one at allelectronics. Looks like a good price but I noticed it connects to another cable? Can I cut off the cable and then open the plug to hook up a diffrent config or should I just go with the digi tech plug?

So here is questions.

By the way I did buy a old modem a long time ago and I stripped the parts but it got really weird. Thats why I just want the plug so I can start fresh and make an original piece of hardware. With all new parts.

Is the plug on digi tech just the plug with 24 leads that can be hooked up to a custom breadboard?

Basic questions for basic answers.

jbuonacc · Post by **jbuonacc** » Mon Apr 23, 2007 12:35 am

glued?

maybe that's why your other one 'got really weird'? lofl...

i'm thinking that the DigiKey and the other are the same connector (with the solder/wire eyelets) which would be soldered to either side of the board. i've seen the other pin style connectors as well, but i can't recall where. i think these would be what you'd want to connect to a 'breadboard'.

the cables from All Electronics look to be an amzing deal compared to DigiKey! the connector, a housing, and DIN cable all for less than half the price of one lone connector from DigiKey. wow! there can only be a few wires connected internally, so seperating the cable from the connector (or rewiring it) should be no problem.

what are you trying to make?

carlsson · Post by **carlsson** » Mon Apr 23, 2007 4:00 am

Hopefully the connector from All Electronics is fully wired, so not only the pins used by the cable are connected.

jbuonacc · Post by **jbuonacc** » Mon Apr 23, 2007 9:10 am

that's a thought...

hadn't figured on that. we'll see...

you mean like there might only be three or five 'teeth' in the connector?

carlsson · Post by **carlsson** » Tue Apr 24, 2007 3:57 am

Yep. One never knows, when it is so inexpensive. Hopefully it once cost more to custom make connectors than to fully populate them.

jbuonacc · Post by **jbuonacc** » Tue Apr 24, 2007 11:52 pm

i was thinking more about this. wouldn't it be pretty unlikely to have only a few pins in the connector itself? have you seen them like this before? i would think that the pins are what makes the connection snug and that it'd be loose or uneven with just a few in there. i guess i'll find out soon enough, i'll surely report back when they arrive.

also, which few contacts on the port might they connect to? what application might the cables have been manufactured for?

carlsson · Post by **carlsson** » Fri Apr 27, 2007 2:05 am

If the cable even is for PET/VIC/64. I suppose this connector had many uses, and All Electronics may just assume that the cables relate to C64 without knowing the exact use. As I wrote above, if it had a 6-pin DIN instead of a 5-pin, it might be for connecting a PET as an IEEE slave interface.

jbuonacc · Post by **jbuonacc** » Tue May 01, 2007 1:50 am

got 'em. the edge connectors are Texas Instruments', but have straight pins instead of the nice eyelets. all pins are intact, and there's a little 'key' divider so it's not plugged in wrong. the connector housing is pretty nice, but the din cable/connector is pretty low-qual. looks like they were assembled in Mexico over 20 years ago, each one is boxed with yellowed tape on it. they're specifically labelled for 'Commodore 64', not sure what the use might have been. works for me! ...and please don't go buying them all up, i'd like to place another order or three.

carlsson · Post by **carlsson** » Tue May 01, 2007 8:47 am

Are only three wires connected, and which ones? Based on your picture, it looks like ground, reset and CB2 (or whatever that signal is called on the C64). Or maybe that is ground, JOY0 and CB2. Of course it could be turned upside-down and the signals are ground, PB6/7 and +5V. In that case, maybe some application that had one data line and required external power. Just speculating.

Devlin · Post by **Devlin** » Tue May 01, 2007 9:41 pm

The one from all electronics looks just like what I need.
I made a switching station that works off of PB0-PB7.
And need a cable to hook it up.
I like the fact that it can be unscrewed to attach any wires need be.
So I have 8 3V Relays on my switching kit buffered and all!

Denial

I/O port plug.

I/O port plug.

Yes it was...

Switching Station