diff --git a/src/devices/bus/ti99x/998board.cpp b/src/devices/bus/ti99x/998board.cpp
index 595ee5f77b1..89d7224fc98 100644
--- a/src/devices/bus/ti99x/998board.cpp
+++ b/src/devices/bus/ti99x/998board.cpp
@@ -126,6 +126,7 @@
 
 mainboard8_device::mainboard8_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
 	: device_t(mconfig, MAINBOARD8, "TI-99/8 Mainboard", tag, owner, clock, "ti998_mainboard", __FILE__),
+	m_A14_set(false),
 	m_pending_write(false),
 	m_speech_ready(true),
 	m_sound_ready(true),
@@ -785,6 +786,7 @@ void mainboard8_device::device_reset()
 	m_pbox_ready = true;
 	m_pending_write = false;
 	m_prev_grom = 0;
+	m_A14_set = false;
 }
 
 MACHINE_CONFIG_FRAGMENT( ti998_mainboard )
diff --git a/src/devices/bus/ti99x/998board.h b/src/devices/bus/ti99x/998board.h
index 0a1d1523db7..32b59cd1d5e 100644
--- a/src/devices/bus/ti99x/998board.h
+++ b/src/devices/bus/ti99x/998board.h
@@ -357,9 +357,6 @@ private:
 	// Accessing the mapper
 	bool m_mapper_accessed;
 
-	// Doing a DMA access
-	bool m_sram_dma;
-
 	// HOLDA flag
 	bool m_hold_acknowledged;
 
@@ -452,6 +449,9 @@ protected:
 	machine_config_constructor device_mconfig_additions() const override;
 
 private:
+	// Holds the state of the A14 line
+	bool    m_A14_set;
+
 	// Propagates the end of the memory cycle
 	void cycle_end();
 
@@ -485,12 +485,6 @@ private:
 	bool m_sound_ready;
 	bool m_pbox_ready;
 
-	// Holds the A14 address line state. We need this for the clock_in method.
-	bool m_A14_set;
-
-	// 99/4A compatibility mode. Name is taken from the spec. If asserted, 99/4A compatibility is active.
-	line_state  m_crus;
-
 	// P-Code mode, negative logic. Name is taken from the spec. If asserted, P-Code libraries are available.
 	// May be read as "Pascal and Text-to-speech GROM libraries ENable"
 	line_state  m_ptgen;