diff --git a/src/mame/apple/rbv.cpp b/src/mame/apple/rbv.cpp
index 7331e7d7687..a75dcf75dec 100644
--- a/src/mame/apple/rbv.cpp
+++ b/src/mame/apple/rbv.cpp
@@ -184,36 +184,6 @@ void rbv_device::asc_irq_w(int state)
 	m_pseudovia->asc_irq_w(state);
 }
 
-void rbv_device::pseudovia_recalc_irqs()
-{
-	// check slot interrupts and bubble them down to IFR
-	u8 slot_irqs = (~m_pseudovia_regs[2]) & 0x78;
-	slot_irqs &= (m_pseudovia_regs[0x12] & 0x78);
-
-	if (slot_irqs)
-	{
-		m_pseudovia_regs[3] |= 2; // any slot
-	}
-	else // no slot irqs, clear the pending bit
-	{
-		m_pseudovia_regs[3] &= ~2; // any slot
-	}
-
-	u8 ifr = (m_pseudovia_regs[3] & m_pseudovia_ier) & 0x1b;
-
-	if (ifr != 0)
-	{
-		m_pseudovia_regs[3] = ifr | 0x80;
-		m_pseudovia_ifr = ifr | 0x80;
-
-		write_irq(ASSERT_LINE);
-	}
-	else
-	{
-		write_irq(CLEAR_LINE);
-	}
-}
-
 u8 rbv_device::via2_video_config_r()
 {
 	return m_montype;
@@ -229,141 +199,6 @@ void rbv_device::via2_irq_w(int state)
 	write_irq(state);
 }
 
-u8 rbv_device::pseudovia_r(offs_t offset)
-{
-	int data = 0;
-
-	if (offset < 0x100)
-	{
-		data = m_pseudovia_regs[offset];
-
-		if (offset == 0x10)
-		{
-			data &= ~0x38;
-			data |= m_montype;
-		}
-
-		// bit 7 of these registers always reads as 0 on pseudo-VIAs
-		if ((offset == 0x12) || (offset == 0x13))
-		{
-			data &= ~0x80;
-		}
-	}
-	else
-	{
-		offset >>= 9;
-
-		switch (offset)
-		{
-		case 13: // IFR
-			data = m_pseudovia_ifr;
-			break;
-
-		case 14: // IER
-			data = m_pseudovia_ier;
-			break;
-
-		default:
-			logerror("pseudovia_r: Unknown pseudo-VIA register %d access\n", offset);
-			break;
-		}
-	}
-	return data;
-}
-
-void rbv_device::pseudovia_w(offs_t offset, u8 data)
-{
-	if (offset < 0x100)
-	{
-		switch (offset)
-		{
-		case 0x02:
-			m_pseudovia_regs[offset] |= (data & 0x40);
-			pseudovia_recalc_irqs();
-			break;
-
-		case 0x03:           // write here to ack
-			if (data & 0x80) // 1 bits write 1s
-			{
-				m_pseudovia_regs[offset] |= data & 0x7f;
-				m_pseudovia_ifr |= data & 0x7f;
-			}
-			else // 1 bits write 0s
-			{
-				m_pseudovia_regs[offset] &= ~(data & 0x7f);
-				m_pseudovia_ifr &= ~(data & 0x7f);
-			}
-			pseudovia_recalc_irqs();
-			break;
-
-		case 0x10:
-			m_pseudovia_regs[offset] = data;
-			break;
-
-		case 0x12:
-			if (data & 0x80) // 1 bits write 1s
-			{
-				m_pseudovia_regs[offset] |= data & 0x7f;
-			}
-			else // 1 bits write 0s
-			{
-				m_pseudovia_regs[offset] &= ~(data & 0x7f);
-			}
-			pseudovia_recalc_irqs();
-			break;
-
-		case 0x13:
-			if (data & 0x80) // 1 bits write 1s
-			{
-				m_pseudovia_regs[offset] |= data & 0x7f;
-
-				if (data == 0xff)
-					m_pseudovia_regs[offset] = 0x1f; // I don't know why this is special, but the IIci ROM's POST demands it
-			}
-			else // 1 bits write 0s
-			{
-				m_pseudovia_regs[offset] &= ~(data & 0x7f);
-			}
-			break;
-
-		default:
-			m_pseudovia_regs[offset] = data;
-			break;
-		}
-	}
-	else
-	{
-		offset >>= 9;
-
-		switch (offset)
-		{
-		case 13: // IFR
-			if (data & 0x80)
-			{
-				data = 0x7f;
-			}
-			pseudovia_recalc_irqs();
-			break;
-
-		case 14:             // IER
-			if (data & 0x80) // 1 bits write 1s
-			{
-				m_pseudovia_ier |= data & 0x7f;
-			}
-			else // 1 bits write 0s
-			{
-				m_pseudovia_ier &= ~(data & 0x7f);
-			}
-			pseudovia_recalc_irqs();
-			break;
-
-		default:
-			logerror("pseudovia_w: Unknown extended pseudo-VIA register %d access\n", offset);
-			break;
-		}
-	}
-}
-
 u8 rbv_device::dac_r(offs_t offset)
 {
 	switch (offset)
diff --git a/src/mame/apple/rbv.h b/src/mame/apple/rbv.h
index 9f8a97edc75..94f5c762ade 100644
--- a/src/mame/apple/rbv.h
+++ b/src/mame/apple/rbv.h
@@ -53,16 +53,11 @@ private:
 	u8 m_montype;
 	bool m_monochrome;
 
-	u8 m_pseudovia_regs[256], m_pseudovia_ier, m_pseudovia_ifr;
 	u8 m_pal_address, m_pal_idx;
 	u32 *m_ram_ptr;
 	u32 m_ram_size;
 	u8 m_video_config;
 
-	u8 pseudovia_r(offs_t offset);
-	void pseudovia_w(offs_t offset, u8 data);
-	void pseudovia_recalc_irqs();
-
 	u8 via2_video_config_r();
 	void via2_video_config_w(u8 data);
 	void via2_irq_w(int state);