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ITotalJustice / TotalSMS

Sega Master System emulator
https://itotaljustice.github.io/TotalSMS/
MIT License
23 stars 4 forks source link

add region detection support (port 0x3F) #17

Open ITotalJustice opened 3 years ago

ITotalJustice commented 3 years ago

https://www.smspower.org/Development/RegionDetection

https://www.smspower.org/Development/PeripheralPorts#Port3FIOPortControl

so games will write to port $3F and then read back the value. if the same value is read back, then it is not japanese system

ITotalJustice commented 3 years ago

this is likely why Zillion text is in japanese