diff --git a/src/mame/drivers/joctronic.cpp b/src/mame/drivers/joctronic.cpp
index efe5ad48b18..0e420399f33 100644
--- a/src/mame/drivers/joctronic.cpp
+++ b/src/mame/drivers/joctronic.cpp
@@ -356,7 +356,7 @@ void joctronic_state::joctronic(machine_config &config)
 
 	z80ctc_device& ctc(Z80CTC(config, "ctc", XTAL(12'000'000)/4)); // 3 MHz
 	ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
-	ctc.zc_callback<0>().set_inputline(m_soundcpu, INPUT_LINE_IRQ0); //SINT
+	ctc.zc_callback<0>().set_inputline(m_soundcpu, INPUT_LINE_IRQ0, ASSERT_LINE); //SINT
 
 	LS259(config, "drivers1", 0); // IC4
 	LS259(config, "drivers2", 0); // IC3
@@ -394,12 +394,12 @@ void joctronic_state::slalom03(machine_config &config)
 
 	LS259(config, m_mainlatch); // IC6 - exact type unknown
 	//m_mainlatch->q_out_cb<0>().set(FUNC(joctronic_state::cont_w));
-	//m_mainlatch->parallel_out_cb().set(FUNC(joctronic_state::ls145_w)).rshift(3).mask(0x38);
+	//m_mainlatch->parallel_out_cb().set(FUNC(joctronic_state::ls145_w)).rshift(3).mask(0x07);
 	//m_mainlatch->q_out_cb<7>().set(FUNC(joctronic_state::slalom03_reset_w));
 
 	z80ctc_device& ctc(Z80CTC(config, "ctc", XTAL(12'000'000)/2)); // 6 MHz
 	ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
-	//ctc.zc_callback<0>().set_inputline(m_soundcpu, INPUT_LINE_IRQ0); //SINT
+	//ctc.zc_callback<0>().set_inputline(m_soundcpu, INPUT_LINE_IRQ0, ASSERT_LINE); //SINT
 
 	HC259(config, "drivers1", 0); // IC1
 	HC259(config, "drivers2", 0); // IC2
diff --git a/src/mame/drivers/supstarf.cpp b/src/mame/drivers/supstarf.cpp
index b27cdf735c7..c51a223445c 100644
--- a/src/mame/drivers/supstarf.cpp
+++ b/src/mame/drivers/supstarf.cpp
@@ -194,7 +194,8 @@ void supstarf_state::supstarf(machine_config &config)
 
 	I8212(config, m_soundlatch[1]);
 	m_soundlatch[1]->md_rd_callback().set_constant(0);
-	m_soundlatch[1]->int_wr_callback().set_inputline("soundcpu", MCS48_INPUT_IRQ)/*.append_inputline(m_maincpu, I8085_READY_LINE)*/;
+	m_soundlatch[1]->int_wr_callback().set_inputline("soundcpu", MCS48_INPUT_IRQ);
+	//m_soundlatch[1]->int_wr_callback().append_inputline(m_maincpu, I8085_READY_LINE);
 
 	SPEAKER(config, "mono").front_center();