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arcadeshopper

dumping mbx carts

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so we've noticed that the mbx cart dumps are not 100% functional..  especially with the mbx only games.. 

 

So I threw in the gram kracker and the baseball cart..and the cart takes over the console.. 

 

How did we do the dumps the first time?  cart switcher and csave?  

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Looking forward to the answer as well as are here working MBX dumps that I can load into my GK?

 

Thanks

 

Bill

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One note, the MBX cartridges were a bit different. IIRC, all of them also had a bit of RAM in them (I think it was 1K). . .and the only GRAM device I know of that could run them without any changes was the GRAMulator.

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You all are looking forward to the answer, i'm looking forward to new dumps to add to my TI file collection.

Edited by jrhodes
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Assembly dumps that SNUG (M. Becker) made a while back somehow. There’s a disc floating around on here with the proper dumps that work in the HSGPL that I imaged.

 

https://atariage.com/forums/topic/184672-mb-cartridge-with-1k-of-ram/

 

Someone should really sticky the MBX disk images in the software thread, as I seem to search for it every year or so. :)

 

Sent from my iPad using Tapatalk

 

 

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"The MBX method is a semaphore method to switch the ROM bank. You write the bank number directly to location >6FFE. In any MBX module, you will find a RAM of 256 bytes. (Why is there 1K in this one?) This is decoded to ROM location >6C00 through >6FFF. So you can read back the bank number from this RAM, because it will be written in parallel to the switching register. Nice feature, but incompatible with all other banking methods. This is the reason, other programs will not correctly read out the ROM banks of MBX modules. You have to write 00, 01, 02, or 03 to the banking register."

 

this is why they wont work on a fg99.. i seriously doubt this bank switching method is emulated @ralphb can confirm?

 

 

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