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The problem is that the A12 line is always high on the FB2 so there's pretty much no way to tell the difference between a TIA access and either an access to Pitfall II's DPC registers or Fatal Run's (and others') SARA RAM writes.


Perhaps someday the FB2 designers will tell us if there are any signals available to us on the "Michelle" chip that could substitute for the A12 line and make these games work.

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  • 2 weeks later...

Essentially, what may help here is if Curt could tell us if there is a chip select or output enable line for the FB2's ROM, a signal that tells us if the Michelle is accessing TIA or RIOT areas, or anything else that might work. This would make nearly all of the non-working games work.

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