amstrad: added Amdrum expansion card [Barry Rodewald]

.gitattributes

@@ -785,6 +785,8 @@ src/emu/bus/comx35/ram.c svneol=native#text/plain
 src/emu/bus/comx35/ram.h svneol=native#text/plain
 src/emu/bus/comx35/thermal.c svneol=native#text/plain
 src/emu/bus/comx35/thermal.h svneol=native#text/plain
+src/emu/bus/cpc/amdrum.c svneol=native#text/plain
+src/emu/bus/cpc/amdrum.h svneol=native#text/plain
 src/emu/bus/cpc/cpc_pds.c svneol=native#text/plain
 src/emu/bus/cpc/cpc_pds.h svneol=native#text/plain
 src/emu/bus/cpc/cpc_rom.c svneol=native#text/plain

src/emu/bus/bus.mak

@@ -1082,6 +1082,7 @@ BUSOBJS += $(BUSOBJ)/cpc/cpc_pds.o
 BUSOBJS += $(BUSOBJ)/cpc/cpc_rs232.o
 BUSOBJS += $(BUSOBJ)/cpc/mface2.o
 BUSOBJS += $(BUSOBJ)/cpc/symbfac2.o
+BUSOBJS += $(BUSOBJ)/cpc/amdrum.o
 endif
 
 #-------------------------------------------------

src/emu/bus/cpc/amdrum.c

@@ -0,0 +1,67 @@
+/*
+ * amdrum.c
+ *
+ *  Created on: 23/08/2014
+ */
+
+#include "emu.h"
+#include "amdrum.h"
+#include "includes/amstrad.h"
+
+
+//**************************************************************************
+//  DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type CPC_AMDRUM = &device_creator<cpc_amdrum_device>;
+
+
+static MACHINE_CONFIG_FRAGMENT( cpc_amdrum )
+	MCFG_SPEAKER_STANDARD_MONO("mono")
+	MCFG_DAC_ADD("dac")
+	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
+	// no pass-through
+MACHINE_CONFIG_END
+
+machine_config_constructor cpc_amdrum_device::device_mconfig_additions() const
+{
+	return MACHINE_CONFIG_NAME( cpc_amdrum );
+}
+
+//**************************************************************************
+//  LIVE DEVICE
+//**************************************************************************
+
+cpc_amdrum_device::cpc_amdrum_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+	device_t(mconfig, CPC_AMDRUM, "Amdrum", tag, owner, clock, "cpc_amdrum", __FILE__),
+	device_cpc_expansion_card_interface(mconfig, *this),
+	m_dac(*this,"dac")
+{
+}
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void cpc_amdrum_device::device_start()
+{
+	device_t* cpu = machine().device("maincpu");
+	address_space& space = cpu->memory().space(AS_IO);
+	m_slot = dynamic_cast<cpc_expansion_slot_device *>(owner());
+
+	space.install_write_handler(0xff00,0xffff,0,0,write8_delegate(FUNC(cpc_amdrum_device::dac_w),this));
+}
+
+//-------------------------------------------------
+//  device_reset - device-specific reset
+//-------------------------------------------------
+
+void cpc_amdrum_device::device_reset()
+{
+	// TODO
+}
+
+WRITE8_MEMBER(cpc_amdrum_device::dac_w)
+{
+	m_dac->write_unsigned8(data);
+}

src/emu/bus/cpc/amdrum.h

@@ -0,0 +1,46 @@
+/*
+ * amdrum.h
+ *
+ *  Created on: 23/08/2014
+ *
+ *  Cheetah Marketing Amdrum
+ *
+ *  I/O FFxx - 8-bit unsigned DAC, write only  (Ferranti ZN428E-8)
+ *  Lower 8 address bits are not decoded.
+ *
+ */
+
+#ifndef AMDRUM_H_
+#define AMDRUM_H_
+
+#include "emu.h"
+#include "cpcexp.h"
+#include "sound/dac.h"
+
+class cpc_amdrum_device  : public device_t,
+						   public device_cpc_expansion_card_interface
+{
+public:
+	// construction/destruction
+	cpc_amdrum_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+	// optional information overrides
+	virtual machine_config_constructor device_mconfig_additions() const;
+
+	DECLARE_WRITE8_MEMBER(dac_w);
+protected:
+	// device-level overrides
+	virtual void device_start();
+	virtual void device_reset();
+
+private:
+	cpc_expansion_slot_device *m_slot;
+
+	required_device<dac_device> m_dac;
+};
+
+// device type definition
+extern const device_type CPC_AMDRUM;
+
+
+#endif /* AMDRUM_H_ */

src/mess/drivers/amstrad.c

@@ -816,6 +816,7 @@ SLOT_INTERFACE_START(cpc_exp_cards)
 	SLOT_INTERFACE("rs232", CPC_RS232)
 	SLOT_INTERFACE("amsrs232", CPC_RS232_AMS)
 	SLOT_INTERFACE("sf2", CPC_SYMBIFACE2)
+	SLOT_INTERFACE("amdrum", CPC_AMDRUM)
 SLOT_INTERFACE_END
 
 SLOT_INTERFACE_START(cpcplus_exp_cards)
@@ -826,6 +827,7 @@ SLOT_INTERFACE_START(cpcplus_exp_cards)
 	SLOT_INTERFACE("rs232", CPC_RS232)
 	SLOT_INTERFACE("amsrs232", CPC_RS232_AMS)
 	SLOT_INTERFACE("sf2", CPC_SYMBIFACE2)
+	SLOT_INTERFACE("amdrum", CPC_AMDRUM)
 SLOT_INTERFACE_END
 
 static MACHINE_CONFIG_START( amstrad_nofdc, amstrad_state )

src/mess/includes/amstrad.h

@@ -21,6 +21,7 @@
 #include "bus/cpc/cpc_pds.h"
 #include "bus/cpc/cpc_rs232.h"
 #include "bus/cpc/symbfac2.h"
+#include "bus/cpc/amdrum.h"
 #include "machine/ram.h"
 #include "imagedev/cassette.h"
 #include "bus/centronics/ctronics.h"