Ooh it's the same as my Anchor Electronics Media Concept 2.0 card. Thank you very much for scanning and sharing the manual, there are some connectors that I don't know what they do and the text manual version I could find was missing that. Here's my thread on it: Anchor Electronics - Media Concept 2.0 Souncard - SB 2.0 clone with real OPL2
This card is essentially a 100% Sound Blaster 2.0 clone, you can put the CMS chips and GAL into the U18/U19/U15 slots for CMS support which I've done on mine. The SC801 and SC802 chips are funny packaged clones of the YM3812 and the DAC, to the point where I've replaced the SC802 DAC on mine with an original Yamaha part because it failed.
Something that isn't well known, I think, is that the contents of the DSP chip on this card are what the Snark Barker project includes in its release files, since the DSP chip wasn't read-out protected and it's not Creative's code.