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I need a BASIC ROM SC-3000H
Posted: Wed Aug 31, 2022 8:35 am
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What would be the cheapest way to get a BASIC ROM for the SEGA YENO SC-3000H?
I have minipro programmer and was looking for a cheap cart that I could use, but all the carts seem quite expensive. |
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Posted: Wed Aug 31, 2022 9:03 am |
The Basic carts also have RAM in them, so it's a bit more complicated than just flashing a ROM. Maybe some flash carts support the extra RAM, but I'm not sure. | |
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Posted: Wed Aug 31, 2022 9:25 am |
I think I've seen that some multicarts have the basic, but they are expensive. I was hoping someone was going to say you can open up the machine and just pop a ROM in the socket lol :) |
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Posted: Thu Sep 01, 2022 9:04 am |
You can program a ROM chip simply enough but the extra RAM that is in the cart is the harder part.
You may be able to do something with a video flipper cart. Its got provision for a second chip of some description, likely an sram chip, along with another chip which is likely to be a logic gate to deal with the address decoding for the RAM. Youd need to trace it out and draw a schematic of it to see if its suitable though. Pictures of the pcb are around on smspower.. google will find them for you if you have trouble. |
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Posted: Thu Sep 01, 2022 9:50 am |
Thanks for your input.
I've found the PCB pictures on here, but I don't think I could attempt building one without schematics. |
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I need a BASIC ROM SC-3000H
Posted: Thu Sep 01, 2022 12:33 pm
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*cough*
http://www43.tok2.com/home/cmpslv/Sc3000/EnrSCbas.htm Enri's website has the schematic. The IIIB uses DRAM but you could design it to use SRAM instead. |
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Posted: Thu Sep 01, 2022 1:22 pm |
OH WOW! That's handy, Thanks. I'll let you know how I get on ;) |
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