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Hi Folks,

my name is Fabian, i'm from Germany and at the moment i'm designing a clone for the 2x4K Cartridge for the Dragon 32.
What do you think about this idea?
I will post a screenshot of the progress tonight.

Let me hear your feedback about this idea.

Cheers,

fbnbmns

Hi Fabian!

Welcome to the Dragon Archive!

Regarding the cartridge, I think it would be nice if you have a damaged original cartridge. Are you designing it for use with standard 2732/2764 eproms?

Cheers,
Rob

Hi Fabian!

Welcome to the Dragon Archive!

Thanks!

Regarding the cartridge, I think it would be nice if you have a damaged original cartridge. Are you designing it for use with standard 2732/2764 eproms?

Yes, it would be a good substitute for damaged cartridges.
I'm designing it with the 2732/2764 EPROMS, just like the original.

BTW, I will need some testers for the PCB, as I don't have any chance to get a Dragon at the moment.
Just drop a PM if you are interested.

Finished the first revision of the board.

Nice!

I'll gladly test your board, as I have a couple of Dragons and equipment for burning eprom chips.

Also, please note that the original cartridges used 2532 chips which are NOT pin compatible with the 2732 (I learned that the hard way...).

Cheers,
Rob

Nice!

Thanks! I corrected some traces afterwards, because they looked so ugly.

I'll gladly test your board, as I have a couple of Dragons and equipment for burning eprom chips.

Great! Maybe you can find some more people (e.g. forums, groups) who want to test the board?
I will do some prototypes (handmade PCB ), and then i can send one to you!
Just send me a PM.

Also, please note that the original cartridges used 2532 chips which are NOT pin compatible with the 2732 (I learned that the hard way...).

Didn't know that before! Thanks for this advice!

Cheers
Fabian

Hallo Fabian!

Great! Maybe you can find some more people (e.g. forums, groups) who want to test the board?

Sure! I have several friends that are Dragon users, and we can meet to test the board thoroughly.

Didn't know that before! Thanks for this advice!

I've found an annotated image comparing the two chips. Fortunately they're not that different, but you cannot swap them because either the chips are destroyed or you can cause any other problem to the computer.
I'll be sending you a PM later today.

Cheers,
Rob