Schematic cattamaran

TXG/MNX · Postby **TXG/MNX** » Mon Jun 05, 2006 10:37 am

Hello,

I am looking for the schematic of the cyrel cattamaran, it seems they are not around to sell any so I would like to build my own if possible...

TXG/MNX

artik-wroc · Postby **artik-wroc** » Mon Jun 19, 2006 6:42 am

This is good idea !!

jens · Postby **jens** » Tue Jun 20, 2006 6:46 am

One for me as well please.

Atm I'm searching for someone who speeds up my TTs' daughterboard to 48 or even 64 mhz.

stimpy · Postby **stimpy** » Tue Jun 20, 2006 8:29 am

I may have some schematics or something! I'll look next time the Falcons on.

alanh · Postby **alanh** » Mon Jul 24, 2006 9:22 pm

This would be great if you have them available.

jvas · Postby **jvas** » Thu Aug 10, 2006 2:20 pm

Could you finally got those schematics?

TXG/MNX wrote:Hello,

I am looking for the schematic of the cyrel cattamaran, it seems they are not around to sell any so I would like to build my own if possible...

TXG/MNX

dexterslab · Postby **dexterslab** » Sat Apr 18, 2009 11:41 pm

sorry to bump old threads, but did anyone manage to source a schematic?

lp · Postby lp » Mon Apr 27, 2009 12:59 am

Someone sent me this today: http://dev-docs.atariforge.org/files/CaTTamaran.pdf

It contains some schematics. Warning, large file... 31mb. It's also in German. Not sure what the schematics are, you might want to have a look. :wink:

wongck · Postby **wongck** » Mon Apr 27, 2009 2:48 pm

I am interested, any hardware expert on this?

djbase · Postby **djbase** » Mon Apr 27, 2009 2:52 pm

Does anyone have a CaTTamaran and can make pictures from back and top side?

dexterslab · Postby **dexterslab** » Mon Apr 27, 2009 6:16 pm

thanks Lp for posting this

the schematics though appear to be atari schematics of the tt itself, with comments about where the cattamaran board ties into rarther than a schema of the board itself. But very useful if someone where to reverse engineer the original.

from the poor pics i've seen of a cattarmaran it's a pretty small & simple looking if someone could take some high rez/detailed pics of one we could certainly have a look at reverse engineering it... unless someone knows how to make something similar allready??

Postby **[ProToS]** » Mon Apr 27, 2009 6:26 pm

djbase wrote:Does anyone have a CaTTamaran and can make pictures from back and top side?

I have one somewhere, will take the picture tonight.

djbase · Postby **djbase** » Mon Apr 27, 2009 6:29 pm

[ProToS] wrote:
djbase wrote:Does anyone have a CaTTamaran and can make pictures from back and top side?

I have one somewhere, will take the picture tonight.

That would be great.

Postby **[ProToS]** » Mon Apr 27, 2009 9:05 pm

high rez pictures

djbase · Postby **djbase** » Mon Apr 27, 2009 9:21 pm

Thanks for the pics. Seems unless someone knows what the GAL does it will be hard to clone this device. The rest is easy to do.

dexterslab · Postby **dexterslab** » Mon Apr 27, 2009 11:37 pm

i dunno... am studying the pdf and the pics... to me there seems to be less to this device than meets the eye, including that cyrel branded ic

djbase · Postby **djbase** » Mon Apr 27, 2009 11:39 pm

The ICS device generates the different clocks and the wires goes to different chips to overclock. From that part its an easy device. I am just not sure what the GAL does.

wongck · Postby **wongck** » Tue Apr 28, 2009 1:52 pm

djbase wrote:The ICS device generates the different clocks and the wires goes to different chips to overclock. From that part its an easy device. I am just not sure what the GAL does.

probably proprietary.... that's why you don't see so many clones of it floating around.

jvas · Postby **jvas** » Tue Apr 28, 2009 1:57 pm

djbase wrote:The ICS device generates the different clocks and the wires goes to different chips to overclock. From that part its an easy device. I am just not sure what the GAL does.

Can't the gal be reversed in a Gal programmer?

dexterslab · Postby **dexterslab** » Tue Apr 28, 2009 2:08 pm

i dont always believe what i see printed on ICs, especially on something like that where there's only a few pins in use

dont see how or why, what would have been a very short production run would have justified a custom ic/clock generator (or whatever it is)

how much did CaTTarmaran retail for when it was new?

djbase · Postby **djbase** » Tue Apr 28, 2009 2:33 pm

jvas wrote:
djbase wrote:The ICS device generates the different clocks and the wires goes to different chips to overclock. From that part its an easy device. I am just not sure what the GAL does.

Can't the gal be reversed in a Gal programmer?

Maybe you can copy it or save the jedec but not the source. If I could get a CaTTamaran for a few days I could at least do some schematics.

wongck · Postby **wongck** » Tue Apr 28, 2009 3:01 pm

Maybe you can copy it or save the jedec but not the source. If I could get a CaTTamaran for a few days I could at least do some schematics.

You think someone will let go of the irreplaceble device to be analysted?

wongck · Postby **wongck** » Tue Apr 28, 2009 3:04 pm

dexterslab wrote:how much did CaTTarmaran retail for when it was new?

Not sure.
But I was going to bid for it for USD$90 on ebay last year.
Unfortunately, I missed by 1-2 minutes and aution was over.

The owner place it again on ebay but I was too busy at work and missed it.

djbase · Postby **djbase** » Tue Apr 28, 2009 3:28 pm

wongck wrote:You think someone will let go of the irreplaceble device to be analysted?

Not sure. I will ask Protos as his one is not installed.

Postby **ijor** » Tue Apr 28, 2009 8:08 pm

djbase wrote:
jvas wrote:Can't the gal be reversed in a Gal programmer?

Maybe you can copy it or save the jedec but not the source.

GALs (as everything else) can be reverse engineered. The effort, time and/or money, depends on the specific GAL and if it is protected or not. No idea if it is worth in this case or not.

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