Demystifying PC-98 Emulation: Is Adding bios9821.rom Actually Better?
Index of /PC98/files/BIOS/PC98Ce2-model-S2D ... - Retro-Type bios9821rom better
: It handles the 256-color (and higher) modes better than the original PC-9801. CD-ROM Booting Demystifying PC-98 Emulation: Is Adding bios9821
For full functionality, you often need font.rom and sound.rom alongside the 9821 file. CD-ROM Booting For full functionality, you often need font
The standard bios.rom emulates the older PC-9801 architecture. Adding bios9821.rom upgrades the emulation to PC-9821 standards, which includes support for 256-color graphics , CD-ROM drives, and faster processors.
For a look at the physical hardware and how these BIOS settings impact system performance during a restoration:
The PC-9821 used different processors (from 386s to Pentiums). If your game requires a "better" BIOS for speed, make sure your emulator settings match the CPU clock speed intended for that specific BIOS version. Common Troubleshooting