From 0684d286ad67ef659b8ca07d281b4b48928365b4 Mon Sep 17 00:00:00 2001
From: Patrick Mackinlay <pmackinlay@hotmail.com>
Date: Mon, 14 Aug 2023 18:18:03 +0700
Subject: mc68681: idle tx lines after transmitter reset

---
 src/devices/machine/mc68681.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/devices/machine/mc68681.cpp b/src/devices/machine/mc68681.cpp
index 2013235ba12..3a3fcfcecf7 100644
--- a/src/devices/machine/mc68681.cpp
+++ b/src/devices/machine/mc68681.cpp
@@ -1557,9 +1557,15 @@ void duart_channel::write_CR(uint8_t data)
 	case 3: /* Reset channel transmitter */
 		SR &= ~(STATUS_TRANSMITTER_READY | STATUS_TRANSMITTER_EMPTY);
 		if (m_ch == 0)
+		{
+			m_uart->write_a_tx(1);
 			m_uart->clear_ISR_bits(INT_TXRDYA);
+		}
 		else
+		{
+			m_uart->write_b_tx(1);
 			m_uart->clear_ISR_bits(INT_TXRDYB);
+		}
 		transmit_register_reset();
 		m_bits_transmitted = 255;
 		m_tx_data_in_buffer = false;
-- 
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