rs232: Add speed indicator to modem control (nw)

src/devices/bus/rs232/loopback.cpp

@@ -29,6 +29,7 @@ WRITE_LINE_MEMBER( rs232_loopback_device::input_rts )
 	if (started())
 	{
 		output_ri(state);
+		output_si(state);
 		output_cts(state);
 	}
 }

src/devices/bus/rs232/rs232.cpp

@@ -21,6 +21,7 @@
     ← DCE   21          CG  110  Signal Quality Detector
     DTE →   23          CH  111  Data Signal Rate Selector
     ← DCE   23          CI  112  Data Signal Rate Selector [Signaling Rate Indicator]
+    ← DCE   12                   High Speed Indicator (Bell 212A)
     DTE →   24          DA  113  Transmitter Signal Element Timing [External Tx Clock]
     ← DCE   15          DB  114  Transmitter Signal Element Timing
     ← DCE   17          DD  115  Receiver Signal Element Timing
@@ -55,6 +56,7 @@ rs232_port_device::rs232_port_device(const machine_config &mconfig, device_type
 	m_dcd(0),
 	m_dsr(0),
 	m_ri(0),
+	m_si(0),
 	m_cts(0),
 	m_dce_rxc(0),
 	m_dce_txc(0),
@@ -62,6 +64,7 @@ rs232_port_device::rs232_port_device(const machine_config &mconfig, device_type
 	m_dcd_handler(*this),
 	m_dsr_handler(*this),
 	m_ri_handler(*this),
+	m_si_handler(*this),
 	m_cts_handler(*this),
 	m_rxc_handler(*this),
 	m_txc_handler(*this),
@@ -84,6 +87,7 @@ void rs232_port_device::device_resolve_objects()
 	m_dcd_handler.resolve_safe();
 	m_dsr_handler.resolve_safe();
 	m_ri_handler.resolve_safe();
+	m_si_handler.resolve_safe();
 	m_cts_handler.resolve_safe();
 	m_rxc_handler.resolve_safe();
 	m_txc_handler.resolve_safe();
@@ -95,6 +99,7 @@ void rs232_port_device::device_start()
 	save_item(NAME(m_dcd));
 	save_item(NAME(m_dsr));
 	save_item(NAME(m_ri));
+	save_item(NAME(m_si));
 	save_item(NAME(m_cts));
 	save_item(NAME(m_dce_rxc));
 	save_item(NAME(m_dce_txc));
@@ -103,12 +108,14 @@ void rs232_port_device::device_start()
 	m_dcd = 1;
 	m_dsr = 1;
 	m_ri = 1;
+	m_si = 1;
 	m_cts = 1;
 
 	m_rxd_handler(1);
 	m_dcd_handler(1);
 	m_dsr_handler(1);
 	m_ri_handler(1);
+	m_si_handler(1);
 	m_cts_handler(1);
 }
 

src/devices/bus/rs232/rs232.h

@@ -22,6 +22,9 @@
 #define MCFG_RS232_RI_HANDLER(_devcb) \
 	devcb = &downcast<rs232_port_device &>(*device).set_ri_handler(DEVCB_##_devcb);
 
+#define MCFG_RS232_SI_HANDLER(_devcb) \
+	devcb = &downcast<rs232_port_device &>(*device).set_si_handler(DEVCB_##_devcb);
+
 #define MCFG_RS232_CTS_HANDLER(_devcb) \
 	devcb = &downcast<rs232_port_device &>(*device).set_cts_handler(DEVCB_##_devcb);
 
@@ -130,6 +133,7 @@ public:
 	template <class Object> devcb_base &set_dcd_handler(Object &&cb) { return m_dcd_handler.set_callback(std::forward<Object>(cb)); }
 	template <class Object> devcb_base &set_dsr_handler(Object &&cb) { return m_dsr_handler.set_callback(std::forward<Object>(cb)); }
 	template <class Object> devcb_base &set_ri_handler(Object &&cb) { return m_ri_handler.set_callback(std::forward<Object>(cb)); }
+	template <class Object> devcb_base &set_si_handler(Object &&cb) { return m_si_handler.set_callback(std::forward<Object>(cb)); }
 	template <class Object> devcb_base &set_cts_handler(Object &&cb) { return m_cts_handler.set_callback(std::forward<Object>(cb)); }
 	template <class Object> devcb_base &set_rxc_handler(Object &&cb) { return m_rxc_handler.set_callback(std::forward<Object>(cb)); }
 	template <class Object> devcb_base &set_txc_handler(Object &&cb) { return m_txc_handler.set_callback(std::forward<Object>(cb)); }
@@ -143,6 +147,7 @@ public:
 	DECLARE_READ_LINE_MEMBER( dcd_r ) { return m_dcd; }
 	DECLARE_READ_LINE_MEMBER( dsr_r ) { return m_dsr; }
 	DECLARE_READ_LINE_MEMBER( ri_r )  { return m_ri; }
+	DECLARE_READ_LINE_MEMBER( si_r )  { return m_si; }
 	DECLARE_READ_LINE_MEMBER( cts_r ) { return m_cts; }
 	DECLARE_READ_LINE_MEMBER( rxc_r ) { return m_dce_rxc; }
 	DECLARE_READ_LINE_MEMBER( txc_r ) { return m_dce_txc; }
@@ -158,6 +163,7 @@ protected:
 	int m_dcd;
 	int m_dsr;
 	int m_ri;
+	int m_si;
 	int m_cts;
 	int m_dce_rxc;
 	int m_dce_txc;
@@ -166,6 +172,7 @@ protected:
 	devcb_write_line m_dcd_handler;
 	devcb_write_line m_dsr_handler;
 	devcb_write_line m_ri_handler;
+	devcb_write_line m_si_handler;
 	devcb_write_line m_cts_handler;
 	devcb_write_line m_rxc_handler;
 	devcb_write_line m_txc_handler;
@@ -190,6 +197,7 @@ public:
 	DECLARE_WRITE_LINE_MEMBER( output_dcd ) { m_port->m_dcd = state; m_port->m_dcd_handler(state); }
 	DECLARE_WRITE_LINE_MEMBER( output_dsr ) { m_port->m_dsr = state; m_port->m_dsr_handler(state); }
 	DECLARE_WRITE_LINE_MEMBER( output_ri )  { m_port->m_ri = state; m_port->m_ri_handler(state); }
+	DECLARE_WRITE_LINE_MEMBER( output_si )  { m_port->m_si = state; m_port->m_si_handler(state); }
 	DECLARE_WRITE_LINE_MEMBER( output_cts ) { m_port->m_cts = state; m_port->m_cts_handler(state); }
 	DECLARE_WRITE_LINE_MEMBER( output_rxc ) { m_port->m_dce_rxc = state; m_port->m_rxc_handler(state); }
 	DECLARE_WRITE_LINE_MEMBER( output_txc ) { m_port->m_dce_txc = state; m_port->m_txc_handler(state); }

src/mame/drivers/cit101.cpp

@@ -200,6 +200,10 @@ MACHINE_CONFIG_START(cit101_state::cit101)
 	MCFG_I8255_OUT_PORTA_CB(WRITE8(cit101_state, nvr_address_w))
 	MCFG_I8255_IN_PORTB_CB(READ8(cit101_state, nvr_data_r))
 	MCFG_I8255_OUT_PORTB_CB(WRITE8(cit101_state, nvr_data_w))
+	MCFG_I8255_IN_PORTC_CB(DEVREADLINE("comm", rs232_port_device, cts_r)) MCFG_DEVCB_BIT(0)
+	MCFG_DEVCB_CHAIN_INPUT(DEVREADLINE("comm", rs232_port_device, dcd_r)) MCFG_DEVCB_BIT(1) // tied to DSR for loopback test
+	MCFG_DEVCB_CHAIN_INPUT(DEVREADLINE("comm", rs232_port_device, ri_r)) MCFG_DEVCB_BIT(2) // tied to CTS for loopback test
+	MCFG_DEVCB_CHAIN_INPUT(DEVREADLINE("comm", rs232_port_device, si_r)) MCFG_DEVCB_BIT(3) // tied to CTS for loopback test
 	MCFG_I8255_OUT_PORTC_CB(WRITE8(cit101_state, nvr_control_w))
 
 	MCFG_DEVICE_ADD("nvr", ER2055, 0)

src/mame/drivers/vt100.cpp

@@ -173,7 +173,7 @@ READ8_MEMBER(vt100_state::modem_r)
 	uint8_t ret = 0x0f;
 
 	ret |= m_rs232->cts_r() << 7;
-	ret |= 1 /* m_rs232->spdi_r() */ << 6;
+	ret |= m_rs232->si_r() << 6;
 	ret |= m_rs232->ri_r() << 5;
 	ret |= m_rs232->dcd_r() << 4;