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mist-devel / mist-binaries

Firmware and core binaries for the MIST board
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Savestate on Commodore 64 #85

Closed fiorefr73 closed 3 years ago

fiorefr73 commented 3 years ago

First of all thanks for the fantastic job! I really enjoy the Mist cores.

Just one question: how difficult would be to create a save state/load state option in the Commodore 64 core? Something like the 'Save Snapshot file'/'Load Snapshot file' functionality in VICE.

In theory it should 'only' write the content of the RAM into a file in the SD to save the state and write back the content of the file in RAM to restore it. Am I making it too much simple?

Thanks in advance for any reply. Francesco

gyurco commented 3 years ago

In theory it should 'only' write the content of the RAM into a file in the SD and the internal state of all chips, RAM of the 1541, etc... Use an Action Replay cart instead.

jotego commented 3 years ago

You need to keep the state of all flip flops in the CPU even. It really is a lot of work.

fiorefr73 commented 3 years ago

In theory it should 'only' write the content of the RAM into a file in the SD and the internal state of all chips, RAM of the 1541, etc... Use an Action Replay cart instead.

Thanks for the reply. I will investigate how to use the Action Replay cart in the FPGA

fiorefr73 commented 3 years ago

You need to keep the state of all flip flops in the CPU even. It really is a lot of work.

Thanks for the answer.