PCE/TG16: Reverse Engineer CD-ROM protocol?

[Trenton_net]

Hey Everyone,

I was wondering, has the CD-ROM protocol ever been reversed for the PC-Engine/TG16? Is it very complicated? Ie. If you wanted to make an interface board so that you could connect a standard USB CD-ROM drive, would that be possible? Sounds like such an adapter would make for a much cheaper CD-ROM upgrade path if so. Easier to replace if something goes wrong too.