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Life on MarsLife on EarthSecret of the Four WindsColoco DXThese are actually the same mapper type, which is Kai Magazine(or Kaiser Wave).$3F0000 - $3FFFFF are self-programming area$000000 - $00FFFF are CFI command areaThey use 45 bytes of CFI query data as copy protection. Writing $98 to ($000055 << 1) enables CFI query, and writing $F0 to ($000000 << 1) disables CFI query.If a different FLASH is used or if writing commands to FLASH CFI is disabled, a warning will appear during boot.Of course, there is a method to bypass this mechanism by providing a set of fake CFI query data to deceive the protection.As for reading/saving data to $3Fxxxx, there is also a method to map it to SRAM, ignoring CFI write commands in this address space. Since CFI commands are in the $3F0XXX address range and the saved data is in the $3FFXXX address range, mapping $3FXXXX directly to SRAM without any processing is perfectly fine.
В чем может быть проблема?
когда данные есть он пропадает, в конце тоже не появляется, только FF, с чем может быть связано?