bus/isa: Preparation for supporting DACK handshake line (nw)

src/devices/bus/isa/fdc.cpp

@@ -72,6 +72,11 @@ void isa8_fdc_device::dack_w(int line, uint8_t data)
 	return m_fdc->dma_w(data);
 }
 
+void isa8_fdc_device::dack_line_w(int line, int state)
+{
+	//m_fdc->dack_w(state);
+}
+
 void isa8_fdc_device::eop_w(int state)
 {
 	m_fdc->tc_w(state == ASSERT_LINE);

src/devices/bus/isa/fdc.h

@@ -40,6 +40,7 @@ protected:
 
 	virtual uint8_t dack_r(int line) override;
 	virtual void dack_w(int line, uint8_t data) override;
+	virtual void dack_line_w(int line, int state) override;
 	virtual void eop_w(int state) override;
 
 	required_device<pc_fdc_interface> m_fdc;

src/devices/bus/isa/isa.cpp

@@ -378,12 +378,18 @@ uint8_t isa8_device::dack_r(int line)
 	return 0xff;
 }
 
-void isa8_device::dack_w(int line,uint8_t data)
+void isa8_device::dack_w(int line, uint8_t data)
 {
 	if (m_dma_device[line])
 		return m_dma_device[line]->dack_w(line,data);
 }
 
+void isa8_device::dack_line_w(int line, int state)
+{
+	if (m_dma_device[line])
+		m_dma_device[line]->dack_line_w(line, state);
+}
+
 void isa8_device::eop_w(int channel, int state)
 {
 	if (m_dma_eop[channel] && m_dma_device[channel])
@@ -438,9 +444,15 @@ uint8_t device_isa8_card_interface::dack_r(int line)
 {
 	return 0;
 }
-void device_isa8_card_interface::dack_w(int line,uint8_t data)
+
+void device_isa8_card_interface::dack_w(int line, uint8_t data)
 {
 }
+
+void device_isa8_card_interface::dack_line_w(int line, int state)
+{
+}
+
 void device_isa8_card_interface::eop_w(int state)
 {
 }
@@ -593,7 +605,7 @@ uint16_t isa16_device::dack16_r(int line)
 	return 0xffff;
 }
 
-void isa16_device::dack16_w(int line,uint16_t data)
+void isa16_device::dack16_w(int line, uint16_t data)
 {
 	if (m_dma_device[line])
 		return dynamic_cast<device_isa16_card_interface *>(m_dma_device[line])->dack16_w(line,data);
@@ -647,6 +659,6 @@ uint16_t device_isa16_card_interface::dack16_r(int line)
 	return 0;
 }
 
-void device_isa16_card_interface::dack16_w(int line,uint16_t data)
+void device_isa16_card_interface::dack16_w(int line, uint16_t data)
 {
 }

src/devices/bus/isa/isa.h

@@ -176,7 +176,8 @@ public:
 	DECLARE_WRITE8_MEMBER(io_w);
 
 	uint8_t dack_r(int line);
-	void dack_w(int line,uint8_t data);
+	void dack_w(int line, uint8_t data);
+	void dack_line_w(int line, int state);
 	void eop_w(int channels, int state);
 
 	void nmi();
@@ -246,7 +247,8 @@ public:
 	void set_isa_device();
 	// configuration access
 	virtual uint8_t dack_r(int line);
-	virtual void dack_w(int line,uint8_t data);
+	virtual void dack_w(int line, uint8_t data);
+	virtual void dack_line_w(int line, int state);
 	virtual void eop_w(int state);
 
 	virtual void remap(int space_id, offs_t start, offs_t end) {}
@@ -325,7 +327,7 @@ public:
 	DECLARE_WRITE_LINE_MEMBER( drq7_w );
 
 	uint16_t dack16_r(int line);
-	void dack16_w(int line,uint16_t data);
+	void dack16_w(int line, uint16_t data);
 	virtual void remap(int space_id, offs_t start, offs_t end) override;
 
 	// 16 bit accessors for ISA-defined address spaces
@@ -370,7 +372,7 @@ public:
 	// construction/destruction
 	virtual ~device_isa16_card_interface();
 	virtual uint16_t dack16_r(int line);
-	virtual void dack16_w(int line,uint16_t data);
+	virtual void dack16_w(int line, uint16_t data);
 
 	void set_isa_device();
 

src/devices/bus/isa/mufdc.cpp

@@ -195,6 +195,11 @@ void mufdc_device::dack_w(int line, uint8_t data)
 	return m_fdc->dma_w(data);
 }
 
+void mufdc_device::dack_line_w(int line, int state)
+{
+	//m_fdc->dack_w(state);
+}
+
 void mufdc_device::eop_w(int state)
 {
 	m_fdc->tc_w(state == ASSERT_LINE);

src/devices/bus/isa/mufdc.h

@@ -47,6 +47,7 @@ protected:
 	// device_isa8_card_interface
 	virtual uint8_t dack_r(int line) override;
 	virtual void dack_w(int line, uint8_t data) override;
+	virtual void dack_line_w(int line, int state) override;
 	virtual void eop_w(int state) override;
 
 private:

src/devices/bus/isa/omti8621.cpp

@@ -1285,6 +1285,11 @@ void omti8621_device::dack_w(int line, uint8_t data)
 	return m_fdc->dma_w(data);
 }
 
+void omti8621_device::dack_line_w(int line, int state)
+{
+	//m_fdc->dack_w(state);
+}
+
 void omti8621_device::eop_w(int state)
 {
 	m_fdc->tc_w(state == ASSERT_LINE);

src/devices/bus/isa/omti8621.h

@@ -56,6 +56,7 @@ protected:
 
 	virtual uint8_t dack_r(int line) override;
 	virtual void dack_w(int line, uint8_t data) override;
+	virtual void dack_line_w(int line, int state) override;
 	virtual void eop_w(int state) override;
 
 	void set_interrupt(enum line_state line_state);

src/devices/bus/isa/wdxt_gen.cpp

@@ -236,6 +236,16 @@ void wdxt_gen_device::dack_w(int line, uint8_t data)
 }
 
 
+//-------------------------------------------------
+//  dack_line_w -
+//-------------------------------------------------
+
+void wdxt_gen_device::dack_line_w(int line, int state)
+{
+	m_host->dack3_w(state);
+}
+
+
 //-------------------------------------------------
 //  wd1015_t1_r -
 //-------------------------------------------------

src/devices/bus/isa/wdxt_gen.h

@@ -52,6 +52,7 @@ protected:
 	// device_isa8_card_interface
 	virtual uint8_t dack_r(int line) override;
 	virtual void dack_w(int line, uint8_t data) override;
+	virtual void dack_line_w(int line, int state) override;
 
 private:
 	DECLARE_WRITE_LINE_MEMBER( irq5_w );

src/devices/machine/wd11c00_17.cpp

@@ -300,6 +300,15 @@ WRITE8_MEMBER( wd11c00_17_device::io_w )
 }
 
 
+//-------------------------------------------------
+//  dack3_w -
+//-------------------------------------------------
+
+WRITE_LINE_MEMBER(wd11c00_17_device::dack3_w)
+{
+}
+
+
 //-------------------------------------------------
 //  dack_r -
 //-------------------------------------------------

src/devices/machine/wd11c00_17.h

@@ -39,6 +39,7 @@ public:
 	DECLARE_READ8_MEMBER( io_r );
 	DECLARE_WRITE8_MEMBER( io_w );
 
+	DECLARE_WRITE_LINE_MEMBER( dack3_w );
 	uint8_t dack_r();
 	void dack_w(uint8_t data);