If you still get errors, your BIOS file might be "unverified" or outdated. The best practice is to download a Full MAME ROM Set

= a boot image for the TMS320C31 DSP that has passed structural integrity checks (header, checksum, address bounds, endianness). It ensures reliable power‑up program loading from an external EPROM or host. Verification is critical in embedded systems where no JTAG or debugger is available to recover from a bad boot image.

Confirming that the file was issued by an authorized developer or a reputable community-vetted source. Why C31BootBin Verification Matters 1. Preventing System Bricking