amstrad: added Digiblaster printer-port device [Barry Rodewald]

.gitattributes

@@ -735,6 +735,8 @@ src/emu/bus/centronics/covox.c svneol=native#text/plain
 src/emu/bus/centronics/covox.h svneol=native#text/plain
 src/emu/bus/centronics/ctronics.c svneol=native#text/plain
 src/emu/bus/centronics/ctronics.h svneol=native#text/plain
+src/emu/bus/centronics/digiblst.c svneol=native#text/plain
+src/emu/bus/centronics/digiblst.h svneol=native#text/plain
 src/emu/bus/centronics/dsjoy.c svneol=native#text/plain
 src/emu/bus/centronics/dsjoy.h svneol=native#text/plain
 src/emu/bus/centronics/epson_ex800.c svneol=native#text/plain

src/emu/bus/bus.mak

@@ -761,6 +761,7 @@ BUSOBJS += $(BUSOBJ)/centronics/dsjoy.o
 BUSOBJS += $(BUSOBJ)/centronics/epson_ex800.o
 BUSOBJS += $(BUSOBJ)/centronics/epson_lx800.o
 BUSOBJS += $(BUSOBJ)/centronics/printer.o
+BUSOBJS += $(BUSOBJ)/centronics/digiblst.o
 $(BUSOBJ)/centronics/epson_ex800.o:    $(EMUOBJ)/layout/ex800.lh
 $(BUSOBJ)/centronics/epson_lx800.o:    $(EMUOBJ)/layout/lx800.lh
 endif

src/emu/bus/centronics/digiblst.c

@@ -0,0 +1,61 @@
+/*
+ * digiblst.c
+ *
+ *  Created on: 23/08/2014
+ */
+
+#include "emu.h"
+#include "sound/dac.h"
+#include "digiblst.h"
+
+//**************************************************************************
+//  COVOX DEVICE
+//**************************************************************************
+
+// device type definition
+const device_type CENTRONICS_DIGIBLASTER = &device_creator<centronics_digiblaster_device>;
+
+static MACHINE_CONFIG_FRAGMENT( digiblst )
+	/* sound hardware */
+	MCFG_SPEAKER_STANDARD_MONO("mono")
+
+	MCFG_SOUND_ADD("dac", DAC, 0)
+	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+MACHINE_CONFIG_END
+
+
+/***************************************************************************
+    IMPLEMENTATION
+***************************************************************************/
+//-------------------------------------------------
+//  centronics_covox_device - constructor
+//-------------------------------------------------
+
+centronics_digiblaster_device::centronics_digiblaster_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+	: device_t(mconfig, CENTRONICS_DIGIBLASTER, "Digiblaster (DIY)", tag, owner, clock, "digiblst", __FILE__),
+	device_centronics_peripheral_interface( mconfig, *this ),
+	m_dac(*this, "dac"),
+	m_data(0)
+{
+}
+
+//-------------------------------------------------
+//  machine_config_additions - device-specific
+//  machine configurations
+//-------------------------------------------------
+
+machine_config_constructor centronics_digiblaster_device::device_mconfig_additions() const
+{
+	return MACHINE_CONFIG_NAME( digiblst );
+}
+
+void centronics_digiblaster_device::device_start()
+{
+	save_item(NAME(m_data));
+}
+
+void centronics_digiblaster_device::update_dac()
+{
+	if (started())
+		m_dac->write_unsigned8(m_data);
+}

src/emu/bus/centronics/digiblst.h

@@ -0,0 +1,58 @@
+/*
+ * digiblst.h
+ *
+ *	Digiblaster - a DIY printer port DAC for the Amstrad CPC
+ *	Printed in the German magazine CPC Amstrad International issue 8-9/1991
+ *	Uses Strobe (inverted on the CPC) for the 8th bit (CPCs only have 7-bit printer ports)
+ *
+ *	Code borrows from the Covox Speech Thing device.
+ *
+ *  Created on: 23/08/2014
+ */
+
+#ifndef DIGIBLST_H_
+#define DIGIBLST_H_
+
+#pragma once
+
+#include "ctronics.h"
+#include "sound/dac.h"
+
+// ======================> centronics_covox_device
+
+class centronics_digiblaster_device : public device_t,
+	public device_centronics_peripheral_interface
+{
+public:
+	// construction/destruction
+	centronics_digiblaster_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+	// optional information overrides
+	virtual machine_config_constructor device_mconfig_additions() const;
+
+protected:
+	// device-level overrides
+	virtual void device_start();
+
+	virtual DECLARE_WRITE_LINE_MEMBER( input_data0 ) { if (state) m_data |= 0x01; else m_data &= ~0x01; update_dac(); }
+	virtual DECLARE_WRITE_LINE_MEMBER( input_data1 ) { if (state) m_data |= 0x02; else m_data &= ~0x02; update_dac(); }
+	virtual DECLARE_WRITE_LINE_MEMBER( input_data2 ) { if (state) m_data |= 0x04; else m_data &= ~0x04; update_dac(); }
+	virtual DECLARE_WRITE_LINE_MEMBER( input_data3 ) { if (state) m_data |= 0x08; else m_data &= ~0x08; update_dac(); }
+	virtual DECLARE_WRITE_LINE_MEMBER( input_data4 ) { if (state) m_data |= 0x10; else m_data &= ~0x10; update_dac(); }
+	virtual DECLARE_WRITE_LINE_MEMBER( input_data5 ) { if (state) m_data |= 0x20; else m_data &= ~0x20; update_dac(); }
+	virtual DECLARE_WRITE_LINE_MEMBER( input_data6 ) { if (state) m_data |= 0x40; else m_data &= ~0x40; update_dac(); }
+	virtual DECLARE_WRITE_LINE_MEMBER( input_strobe ) { if (state) m_data &= ~0x80; else m_data |= 0x80; update_dac(); }
+
+private:
+	required_device<dac_device> m_dac;
+
+	void update_dac();
+
+	UINT8 m_data;
+};
+
+// device type definition
+extern const device_type CENTRONICS_DIGIBLASTER;
+
+
+#endif /* DIGIBLST_H_ */

src/mess/drivers/amstrad.c

@@ -830,6 +830,16 @@ SLOT_INTERFACE_START(cpcplus_exp_cards)
 	SLOT_INTERFACE("amdrum", CPC_AMDRUM)
 SLOT_INTERFACE_END
 
+SLOT_INTERFACE_START(amstrad_printers)
+	SLOT_INTERFACE("pl80", COMX_PL80)
+	SLOT_INTERFACE("ex800", EPSON_EX800)
+	SLOT_INTERFACE("lx800", EPSON_LX800)
+	SLOT_INTERFACE("lx810l", EPSON_LX810L)
+	SLOT_INTERFACE("ap2000", EPSON_AP2000)
+	SLOT_INTERFACE("printer", CENTRONICS_PRINTER)
+	SLOT_INTERFACE("digiblst", CENTRONICS_DIGIBLASTER)
+SLOT_INTERFACE_END
+
 static MACHINE_CONFIG_START( amstrad_nofdc, amstrad_state )
 	/* Machine hardware */
 	MCFG_CPU_ADD("maincpu", Z80, XTAL_16MHz / 4)
@@ -877,7 +887,7 @@ static MACHINE_CONFIG_START( amstrad_nofdc, amstrad_state )
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
 
 	/* printer */
-	MCFG_CENTRONICS_ADD("centronics", centronics_printers, "printer")
+	MCFG_CENTRONICS_ADD("centronics", amstrad_printers, "printer")
 	MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(amstrad_state, write_centronics_busy))
 
 	/* snapshot */

src/mess/includes/amstrad.h

@@ -25,6 +25,12 @@
 #include "machine/ram.h"
 #include "imagedev/cassette.h"
 #include "bus/centronics/ctronics.h"
+#include "bus/centronics/comxpl80.h"
+#include "bus/centronics/epson_ex800.h"
+#include "bus/centronics/epson_lx800.h"
+#include "bus/centronics/printer.h"
+#include "bus/centronics/digiblst.h"
+
 
 /****************************
  * Gate Array data (CPC) -