Summary

• Changes the max. RAM limit on HP Pavilion 73xx/74xx (Ruby USB) from 128 MB to 512 MB
• Changes the max. RAM limit on AOpen AP61 from 512 MB to 256 MB as it cannot detect more than that amount

Checklist

• Closes #xxx
• I have tested my changes locally and validated that the functionality works as intended
• I have discussed this with core contributors already
• This pull request requires changes to the ROM set
  • I have opened a roms pull request - https://github.com/86Box/roms/pull/changeme/

References

• https://theretroweb.com/motherboards/s/intel-advanced-ru-ruby (despite the official limit being 128 MB the machine chipset and RAM slot amount allow for 512 MB)
• My own testing