diff --git a/src/devices/cpu/m6502/om740.lst b/src/devices/cpu/m6502/om740.lst
index 841af3db193..43b8cd39c10 100644
--- a/src/devices/cpu/m6502/om740.lst
+++ b/src/devices/cpu/m6502/om740.lst
@@ -43,6 +43,7 @@ seb_bac
 clb_biz
 	TMP = read_pc();
 	TMP2 = read(TMP);
+	read(TMP);
 	TMP2 = do_clb(TMP2, (IR>>5) & 7);
 	write(TMP, TMP2);
 	prefetch();
@@ -50,6 +51,7 @@ clb_biz
 seb_biz
 	TMP = read_pc();
 	TMP2 = read(TMP);
+	read(TMP);
 	TMP2 = do_seb(TMP2, (IR>>5) & 7);
 	write(TMP, TMP2);
 	prefetch();
@@ -57,42 +59,68 @@ seb_biz
 bbc_bzr
 	TMP = read_pc();
 	TMP2 = read(TMP);
-	TMP = read_pc();
 	read_pc_noinc();
 	if(!(TMP2 & (1 << ((IR>>5) & 7)))) {
+		TMP = read_pc_noinc();
+		read_arg(set_l(PC, PC+1));
+		PC++;
+		read_arg(set_l(PC, PC+int8_t(TMP)));
 		PC += int8_t(TMP);
+	} else {
+		read_pc();
 	}
 	prefetch();
 
 bbs_bzr
 	TMP = read_pc();
 	TMP2 = read(TMP);
-	TMP = read_pc();
 	read_pc_noinc();
 	if(TMP2 & (1 << ((IR>>5) & 7))) {
+		TMP = read_pc_noinc();
+		read_arg(set_l(PC, PC+1));
+		PC++;
+		read_arg(set_l(PC, PC+int8_t(TMP)));
 		PC += int8_t(TMP);
+	} else {
+		read_pc();
 	}
 	prefetch();
 
 bbc_bar
-	TMP = read_pc();
+	read_pc_noinc();
 	read_pc_noinc();
 	if(!(A & (1 << ((IR>>5) & 7)))) {
+		TMP = read_pc_noinc();
+		read_arg(set_l(PC, PC+1));
+		PC++;
+		read_arg(set_l(PC, PC+int8_t(TMP)));
 		PC += int8_t(TMP);
+	} else {
+		read_pc();
 	}
 	prefetch();
 
 bbs_bar
-	TMP = read_pc();
+	read_pc_noinc();
 	read_pc_noinc();
 	if(A & (1 << ((IR>>5) & 7))) {
+		TMP = read_pc_noinc();
+		read_arg(set_l(PC, PC+1));
+		PC++;
+		read_arg(set_l(PC, PC+int8_t(TMP)));
 		PC += int8_t(TMP);
+	} else {
+		read_pc();
 	}
 	prefetch();
 
 rrf_zpg
 	TMP = read_pc();
 	TMP2 = read(TMP);
+	read(TMP);
+	read(TMP);
+	read(TMP);
+	read(TMP);
 	TMP2 = do_rrf(TMP2);
 	write(TMP, TMP2);
 	prefetch();