While the exact layout is vendor-specific, a typical sp5001.bin file (usually 64KB to 512KB in size) follows a common firmware pattern:
Allow non-standard, custom JVS boards to operate with official NAOMI games. sp5001.bin
When an arcade operator deployed a game like Crazy Taxi or Virtua Fighter 4 , the main computer motherboard did not directly scan physical buttons or coin mechanisms. Instead, it sent a query command to the I/O board. While the exact layout is vendor-specific, a typical sp5001