diff --git a/src/devices/machine/hd63450.cpp b/src/devices/machine/hd63450.cpp
index ec4647fd0db..9d8226c3f9e 100644
--- a/src/devices/machine/hd63450.cpp
+++ b/src/devices/machine/hd63450.cpp
@@ -520,6 +520,8 @@ void hd63450_device::set_error(int channel, uint8_t code)
 	m_reg[channel].cer = code;
 	m_reg[channel].ccr &= ~0xc0;
 
+	if (((m_reg[channel].dcr & 0xc0) == 0x00) || ((m_reg[channel].ocr & 3) == 1))
+		m_cpu->set_input_line(INPUT_LINE_HALT, CLEAR_LINE); // if the cpu is halted resume it
 	set_irq(channel);
 }