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View topic - Sega Master System 32KByte cart.

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  • Joined: 01 Sep 2018
  • Posts: 5
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Sega Master System 32KByte cart.
Post Posted: Fri Sep 14, 2018 10:39 pm
I would like to make a 32KByte cart for noramboot rom by NeonMan

Is there already a PCB design I can use for that? I would like to use it on both SMS 1 and 2 so no card design.

While noramboot does not support it yet but I would like it to have a space for 16KByte ram since there would be or-gates left if you use something like a 74LS32, but that is just dreaming so far.
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  • Joined: 08 Sep 2018
  • Posts: 70
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Post Posted: Sat Sep 15, 2018 7:22 pm
If you dont plan on adding anything at the moment past the rom, you should look up the pcb design for the 48k rom carts. Whenever youre ready to add things like ram, then you'll need a revised pcb design, but as long as the base rom doesnt exceed 32k you shouldnt need to do much to the 48k design to add ram.
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  • Joined: 01 Sep 2018
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Post Posted: Sat Sep 15, 2018 9:41 pm
For those who search like me:
I found a cartridge pcb design on GitHub reidrac/sms-cart-32k
and a shell for 3D printing on thigiverse thing:2138257 (The shell is non-commercial)

Ps. I have not gotten link posting privileges yet, there for the cryptic "links".
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  • Joined: 01 Sep 2018
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Post Posted: Sat Sep 15, 2018 9:43 pm
IllusionOfMana wrote
If you dont plan on adding anything at the moment past the rom, you should look up the pcb design for the 48k rom carts. Whenever youre ready to add things like ram, then you'll need a revised pcb design, but as long as the base rom doesnt exceed 32k you shouldnt need to do much to the 48k design to add ram.


Any Links to the designs?
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  • Joined: 08 Sep 2018
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Post Posted: Sat Sep 15, 2018 11:48 pm
I may have been mistaken. A friend and I have been trying to build a 256kb cart for my current sms project and i was certain I had a 48k cart layout or at least knew of a site that had one. Sadly going back i was unable to find it. Ill get back to you if something changes though.
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  • Joined: 01 Sep 2018
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Post Posted: Sun Sep 16, 2018 12:25 pm
I found this while duckduckgoing on the atari age forum.
It is a Eagle library for some SMS parts and it seems to have been made on request from smspower.org.
Can someone besides me verify that it is correct?
2010.09.20.wip.zip (23.99 KB)
Eagle Cad Library by D Lue Choy on behaf of smspower.org

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