ColecoVision Different Bankswitching Scheme

Pitou
Posts: 11
Joined: Sat Aug 13, 2022 2:46 pm

ColecoVision Different Bankswitching Scheme

Unread post by Pitou »

Hello,

I did dump my Penguin Adventure cartridge and it uses a different scheme.

The way it seems to work is that it writes the bank number to $FFFD and then do a read on $C000 or $A000 (strobe chip select probably).

I did read from the connector and from the chip directly and files are the same

If anyone is interested, I can help.
I did play quickly with source code and compiled a rbf. However I'm not sure how to distinguish megacart from this one.

Thank you
Pitou!

Pitou
Posts: 11
Joined: Sat Aug 13, 2022 2:46 pm

Re: ColecoVision Different Bankswitching Scheme

Unread post by Pitou »

I just found that in FinalBurn Neo the mapper is implemented. They call it "OCM"

Here: https://github.com/finalburnneo/FBNeo/c ... 20bcd9b847

Pitou!

12characters
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Re: ColecoVision Different Bankswitching Scheme

Unread post by 12characters »

It would be nice to get the game working on MiSTer. Consider opening an issue on github with your findings.

Pitou
Posts: 11
Joined: Sat Aug 13, 2022 2:46 pm

Re: ColecoVision Different Bankswitching Scheme

Unread post by Pitou »

Good idea! Done!

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