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Seta ST018

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ST018 is a 32-bit ARM-based enhancement chip used for AI in a single game: Hayazashi Nidan Morita Shogi 2. It has 160 pins.

It is clocked by a 21.44MHz oscillator.[2]

The program ROM was dumped by byuu, appearing in 2012. [1] The chip appears to be ARMv3 because the BIOS uses feature available in that version but no ARMv4 features.[2]

The chip appears to use 8-bit commands, given the command list in fullsnes.

References

  1. https://forums.bannister.org/ubbthreads.php?ubb=showflat&Number=77760
  2. fullsnes
  3. https://snescentral.com/chips.php?chiptype=ST018