Difference between revisions of "Build tool/InstallRAMISR"

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Revision as of 01:08, 3 December 2024

Build tool option InstallRAMISR is used to automatically select RAM in page 0 then copy data there at startup, so ROM cartridge can take advantage of 16 KB of additional RAM.

As page 0 (addresses 0x0000-0x3FFF) is the place where MSX will search for interruption handler (ISR), the build tool will automatically copy the selected ISR (see CustomISR option).

InstallRAMISR can take 3 values:

  • RAM0_NONE: Don't install anything in RAM
  • RAM0_ISR: Install only ISR
  • RAM0_SEGMENT: Install ISR and segment data (for mapped-ROM)