--- np2/sound/opngeng.c	2004/07/26 18:52:55	1.8
+++ np2/sound/opngeng.c	2005/02/04 05:32:24	1.9
@@ -45,7 +45,7 @@ extern	OPNCFG	opncfg;
 
 #define SLOTOUT(s, e, c)													\
 		((opncfg.sintable[(((s).freq_cnt + (c)) >>							\
-							(FREQ_BITS - SIN_BITS)) & (SIN_ENT-1)] *		\
+							(FREQ_BITS - SIN_BITS)) & (SIN_ENT - 1)] *		\
 				opncfg.envtable[(e)]) >> (ENVTBL_BIT+SINTBL_BIT-TL_BITS))
 
 
@@ -143,7 +143,7 @@ void SOUNDCALL opngen_getpcm(void *hdl, 
 		samp_l >>= (OPM_OUTSB + FMDIV_BITS + 1 + 6 - FMVOL_SFTBIT - 8);
 		pcm[0] += samp_l;
 		samp_r += opngen.outdr * opngen.calcremain;
-		samp_r >>= FMDIV_BITS;
+		samp_r >>= 8;
 		samp_r *= opncfg.fmvol;
 		samp_r >>= (OPM_OUTSB + FMDIV_BITS + 1 + 6 - FMVOL_SFTBIT - 8);
 		pcm[1] += samp_r;