diff --git a/src/devices/bus/isa/eis_twib.cpp b/src/devices/bus/isa/eis_twib.cpp
index cca185fdd04..061bdc93327 100644
--- a/src/devices/bus/isa/eis_twib.cpp
+++ b/src/devices/bus/isa/eis_twib.cpp
@@ -95,22 +95,7 @@ TIMER_DEVICE_CALLBACK_MEMBER(isa8_eistwib_device::tick_bitclock)
 {
 	m_uart8274->txca_w(m_bitclock);
 	m_uart8274->rxca_w(m_bitclock);
-	m_sdlclogger->clock_w(m_bitclock);
-
-	if (!m_bitclock)
-	{
-		m_shiftin = ((m_shiftin << 1) & 0xfe) | (m_txd ? 0x01 : 0);
-		if (m_shiftin == 0x7e)
-		{
-			if (!m_in_frame)
-				printf("SYNC found\n");
-			m_in_frame = !m_in_frame;
-		}
-		else if (m_in_frame);
-		{
-			printf("%d ", m_txd);
-		}
-	}
+	m_sdlcbitbanger->clock_w(m_bitclock);
 	m_bitclock = !m_bitclock;
 }
 
@@ -214,10 +199,10 @@ ioport_constructor isa8_eistwib_device::device_input_ports() const
 //-------------------------------------------------
 void isa8_eistwib_device::device_add_mconfig(machine_config &config)
 {
-	SDLC_LOGGER(config, m_sdlclogger, 0); // To decode the frames
+	SDLC_BITBANGER(config, m_sdlcbitbanger, 0); // To decode the frames
 	I8274_NEW(config, m_uart8274, (XTAL(14'318'181)/ 3) / 2); // Half the 4,77 MHz ISA bus CLK signal
 	//m_uart8274->out_rtsa_callback().set([this] (int state) { m_rts = state; });
-	m_uart8274->out_txda_callback().set([this] (int state) { m_txd = state; m_sdlclogger->data_w(state); });
+	m_uart8274->out_txda_callback().set([this] (int state) { m_txd = state; m_sdlcbitbanger->data_w(state); });
 	m_uart8274->out_int_callback().set([this] (int state)
 	{   // Jumper field W1 decides what IRQs to pull
 		if (m_isairq->read() & 0x01) { LOGIRQ("TWIB IRQ2: %d\n", state); m_isa->irq2_w(state); }
@@ -234,11 +219,10 @@ isa8_eistwib_device::isa8_eistwib_device(const machine_config &mconfig, const ch
 	device_t(mconfig, ISA8_EIS_TWIB, tag, owner, clock)
 	, device_isa8_card_interface(mconfig, *this)
 	, m_uart8274(*this, "terminal")
-	, m_sdlclogger(*this, "logger")
+	, m_sdlcbitbanger(*this, "bitbanger")
 	, m_bitclock(false)
 	, m_rts(false)
 	, m_txd(false)
-	, m_in_frame(false)
 	, m_sw1(*this, "SW1")
 	, m_isairq(*this, "W1")
 	, m_installed(false)
diff --git a/src/devices/bus/isa/eis_twib.h b/src/devices/bus/isa/eis_twib.h
index 8abc4688467..7abb2e760e0 100644
--- a/src/devices/bus/isa/eis_twib.h
+++ b/src/devices/bus/isa/eis_twib.h
@@ -28,7 +28,7 @@ protected:
 
 	// devices
 	required_device<i8274_new_device> m_uart8274;
-	required_device<sdlc_logger_device> m_sdlclogger;
+	required_device<sdlc_bitbanger_device> m_sdlcbitbanger;
 
 	// optional information overrides
 	virtual void device_add_mconfig(machine_config &config) override;
@@ -39,8 +39,6 @@ protected:
 	bool m_bitclock;
 	bool m_rts;
 	bool m_txd;
-	bool m_in_frame;
-	uint8_t m_shiftin;
 
 	// helpers
 	required_ioport m_sw1;