SEGA SATURN DEVELOPER'S MANUAL

Prepare the functions required after DMA execution and the cache register operation function format macro.
1.2 Overview: The main purpose of this library is to provide a cache purge function to be called after DMA transfer.
When the RAM in the memory space is accessed from the CPU by the cache address, if DMA transfer is performed with that RAM as the destination, the RAM and cache contents will be inconsistent. In such a case, it is necessary to purge the cache. For details on the cache, see the SH2 hardware manual.

Cache library