In retrospect, would have been nice to write down the configuration before installing the new OS, but in any case
IO is usually 220
DMA8 is 0,1, or 2. Try 2 for this and DMA16 since you think you remember that.
OPL3 is, if I recall, often 330, but depends - unfortunately these things can be set in CMOS or by jumper and I have no way of knowing how it was originally set.
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