jheronimus, what the..? It's Prince of Persia, how does it can EMU8k standard?
badmojo, yes, his question is about FM but not about OPL versions IMHO.
Hevy, I think you mean game sounds that can be playing via SB's WAVE "SPEECH" part or via FM part. OK, do you know that SB16 standard is not fully compatible with SB/SBpro standard? In some games if sound engine can't play through WAVE channel it plays through FM (like Prince), in some games a portion of sounds is just absent. For example in Mortal Kombat you can't hear "Fight!" and fighters voices if you use SB16 standard card (or PCI card).
I have/had a lot of SB16/AWE cards, CT1750, CT2290, CT2940, CT3600, CT3900, ASUS Vibra, CT4520, CT4390. And no one of them can play sound in Prince of Persia, they do it via FM (sound+music).
And I have a lot of SB clones, ESS688, ESS1688, CS4236, YMF719 (except ADPCM), OPTi933. THEY ALL can play Prince's sound via "SPEECH" WAVE part and music via FM.
I advise leave both standards in your system if you want full compatibility to all games. I usually do exactly:
"SB Pro" card --- IO=220 IRQ=7 DMA=1 FM=388 MPU=330 --- it can be any clone, I think ESS688 with YMF262 is excellent choice. ESS1688 with ESFM and MPU is excellent too!
AWE card --- IO=240 IRQ=5 DMA=0,5 FM=disabled AWE=640 MPU=disabled(or 300)
The newer games with SB16 support do not need "SET BLASTER" environment. Therefore SET BLASTER should be turned for older games: A220 I7 D1 T4
And all will work, don't doubt!
By the way: I have SB16 clone AV310, it's CMI8330A. You know, it CAN'T play Prince's sound via WAVE, it plays via FM!!!