I assembled a Wozblaster few months ago and I have not had the luck to make the OPL4 runs. It will run OPL, OPL2 and OPL3 smoothly but not the OPL4. All I hear from OPL4 files is noise with some false tune.
I used the application moontest to see what I get, I got the following:
YMF287B-F
Rom 2048KB
NO RAMs installed !!!!!! (Although I installed many RAMs)
I programmed the 27C160 on 4 parts with the TL866 programmer and the adapter for 27C160. I followed the picture below in setting the dip switch on the adapter as instructed by the designer of this programmer. A18 / A19 = 0 / 0 when the switch is on 1 1 , doesn't make sense to me but this is the instructions. I also tried the other way around by programming another 27C160 when setting the switch A18 / A19 = 0 / 0 when the switch is on 0 0, still the Wozblaster won't run OPL4 files correctly.
Any help would be really appreciated.