Making dongles/keys

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BarryB
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Joined: Thu Aug 02, 2012 8:15 pm

Making dongles/keys

Post by BarryB » Thu Jun 02, 2016 2:44 pm

Is there a guide to making security dongles for various games?

I want to make a Leaderboard dongle for the C64, I can get a cassette port connector off ebay just want to know how to make the actual dongle, and I know you can use an actual C64 cassette playre in place of the key but I want to make one! I've read a resistor is connected between pins 1 and 6 but not seen the value, is this correct? Also, was the Leaderboard dongle the same for all versions of the game (Executive / World Class etc) and did it work on other Access games?

ZrX
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Re: Making dongles/keys

Post by ZrX » Thu Jun 02, 2016 4:50 pm

C2N just shorts the sense line to ground so pretty much any small resistor works. Use 4700 if you wish.

brightcaster
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Re: Making dongles/keys

Post by brightcaster » Thu Jun 02, 2016 7:43 pm

I remember that we even x-rayed a Superbase Personal Amiga Dongle (a fellows girlfriend worked in a hospital) in the eighties. The disks and manuals are long gone, but the original dongle is still with me!

Anyone interested for preservation purpose ? ;-)

David

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mr.vince
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Re: Making dongles/keys

Post by mr.vince » Thu Jun 02, 2016 8:07 pm

Sure, sounds like fun. Unless it's already in WinUAE, Toni loves to hear about such stuff for sure.

ZrX
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Re: Making dongles/keys

Post by ZrX » Thu Jun 02, 2016 10:05 pm

Was it DTL-Basic which has a dongle probably containing just a pre-set shift register that you clock a key out of via the tape port.

During the school years the teacher made a note of a C64 emulator we were running on the schools 386(?) PC and then showed me a copy of Wizawrite 64 (the school actually had used C64 to produce our electronics courses workbook) with a dongle he had copied. Only recall it having some chip and couple of passives. Ended up removing the dongle check (did something with the pot X/Y inputs) and gave him a disk with the emulator and files.

BarryB
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Re: Making dongles/keys

Post by BarryB » Fri Jun 03, 2016 12:16 am

ZrX wrote:C2N just shorts the sense line to ground so pretty much any small resistor works. Use 4700 if you wish.
Right, so a 4k7 resistor should do! What connector did they use back in the day? The ones I've seen are the EDAC 12 way ones in blue or green, the original dongles look to be opaque white connectors!

ZrX
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Re: Making dongles/keys

Post by ZrX » Fri Jun 03, 2016 6:27 am

The Leaderboard dongle I've seen used the same plug as is on the C2Ns cable. No idea if that is available anywhere other than from a drive which are still plenty.

Now I remember I recently cracked a Commodore 128 utility disk Matrix 128 that also uses dongle. Worked such that you read the pot input and two consecutive reads need to return different values, one larger than the other, but both need to be within certain range.

BarryB
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Re: Making dongles/keys

Post by BarryB » Fri Jun 03, 2016 10:33 am

If you have the skills to reverse the code that's a real benefit, hence me looking to make one as i'm about as code literate as a brick!!

Been asking for one on various forums and over on Lemon, someone posted a link to a forum that says the resistor is RED RED GOLD GOLD, so 2.2ohms for the colour code! I've bought a couple of connectors off ebay so i'll make one up and try, have a box of various resistors so should get one that's exact or close to it!

EDIT: Also found that mouser.co.uk seems to have the correct connector as found in the C2N plugs: 172879-0206, and the crimp connector: 172160-1805-LP

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Mayhem
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Re: Making dongles/keys

Post by Mayhem » Sun Jun 05, 2016 12:30 pm

As I have my Leaderboard disk original to hand, then I took a photo of the dongle...

http://i136.photobucket.com/albums/q167 ... eytgpi.jpg
Lie with passion and be forever damned...

ZrX
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Re: Making dongles/keys

Post by ZrX » Sun Jun 05, 2016 2:26 pm

Oh, it was between write and sense. So the game controls the write line and checks that the sense activates.

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