vic20: Emulated the PPP SpeakEasy (Votrax SC-01-A) cartridge. [Curt Coder]

scripts/src/bus.lua

@@ -1425,6 +1425,8 @@ if (BUSES["VIC20"]~=null) then
 		MAME_DIR .. "src/devices/bus/vic20/vic1112.h",
 		MAME_DIR .. "src/devices/bus/vic20/vic1210.cpp",
 		MAME_DIR .. "src/devices/bus/vic20/vic1210.h",
+		MAME_DIR .. "src/devices/bus/vic20/speakeasy.cpp",
+		MAME_DIR .. "src/devices/bus/vic20/speakeasy.h",
 		MAME_DIR .. "src/devices/bus/vic20/user.cpp",
 		MAME_DIR .. "src/devices/bus/vic20/user.h",
 		MAME_DIR .. "src/devices/bus/vic20/4cga.cpp",

src/devices/bus/vic20/exp.cpp

@@ -202,6 +202,7 @@ void vic20_expansion_slot_device::cd_w(address_space &space, offs_t offset, uint
 #include "vic1111.h"
 #include "vic1112.h"
 #include "vic1210.h"
+#include "speakeasy.h"
 
 SLOT_INTERFACE_START( vic20_expansion_cards )
 	SLOT_INTERFACE("exp", VIC1010)
@@ -209,6 +210,7 @@ SLOT_INTERFACE_START( vic20_expansion_cards )
 	SLOT_INTERFACE("8k", VIC1110)
 	SLOT_INTERFACE("16k", VIC1111)
 	SLOT_INTERFACE("fe3", VIC20_FE3)
+	SLOT_INTERFACE("speakeasy", VIC20_SPEAKEASY)
 
 	// the following need ROMs from the software list
 	SLOT_INTERFACE_INTERNAL("standard", VIC20_STD)

src/devices/bus/vic20/speakeasy.cpp

@@ -0,0 +1,103 @@
+// license:BSD-3-Clause
+// copyright-holders:smf
+/**********************************************************************
+
+    Personal Peripheral Products SpeakEasy cartridge emulation
+
+**********************************************************************/
+
+#include "speakeasy.h"
+
+
+
+//**************************************************************************
+//  MACROS/CONSTANTS
+//**************************************************************************
+
+#define SC01A_TAG       "sc01a"
+
+
+
+//**************************************************************************
+//  DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type VIC20_SPEAKEASY = &device_creator<vic20_speakeasy_t>;
+
+
+//-------------------------------------------------
+//  MACHINE_DRIVER( speakeasy )
+//-------------------------------------------------
+
+static MACHINE_CONFIG_FRAGMENT( speakeasy )
+	MCFG_SPEAKER_ADD("mono", 0.0, 0.0, 1.0)
+
+	MCFG_SOUND_ADD(SC01A_TAG, VOTRAX_SC01, 720000)
+	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.85)
+MACHINE_CONFIG_END
+
+
+//-------------------------------------------------
+//  machine_config_additions - device-specific
+//  machine configurations
+//-------------------------------------------------
+
+machine_config_constructor vic20_speakeasy_t::device_mconfig_additions() const
+{
+	return MACHINE_CONFIG_NAME( speakeasy );
+}
+
+
+
+//**************************************************************************
+//  LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+//  vic20_speakeasy_t - constructor
+//-------------------------------------------------
+
+vic20_speakeasy_t::vic20_speakeasy_t(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
+	device_t(mconfig, VIC20_SPEAKEASY, "SpeakEasy", tag, owner, clock, "speakeasy", __FILE__),
+	device_vic20_expansion_card_interface(mconfig, *this),
+	m_votrax(*this, SC01A_TAG)
+{
+}
+
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void vic20_speakeasy_t::device_start()
+{
+}
+
+
+//-------------------------------------------------
+//  vic20_cd_r - cartridge data read
+//-------------------------------------------------
+
+uint8_t vic20_speakeasy_t::vic20_cd_r(address_space &space, offs_t offset, uint8_t data, int ram1, int ram2, int ram3, int blk1, int blk2, int blk3, int blk5, int io2, int io3)
+{
+	if (!io2)
+	{
+		return m_votrax->request() << 7;
+	}
+
+	return data;
+}
+
+
+//-------------------------------------------------
+//  vic20_cd_w - cartridge data write
+//-------------------------------------------------
+
+void vic20_speakeasy_t::vic20_cd_w(address_space &space, offs_t offset, uint8_t data, int ram1, int ram2, int ram3, int blk1, int blk2, int blk3, int blk5, int io2, int io3)
+{
+	if (!io2)
+	{
+		m_votrax->write(space, 0, data & 0x3f);
+		m_votrax->inflection_w(space, 0, data >> 6);
+	}
+}

src/devices/bus/vic20/speakeasy.h

@@ -0,0 +1,54 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+    Personal Peripheral Products SpeakEasy cartridge emulation
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __VIC20_SPEAKEASY__
+#define __VIC20_SPEAKEASY__
+
+#include "emu.h"
+#include "exp.h"
+#include "sound/votrax.h"
+
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> vic20_speakeasy_t
+
+class vic20_speakeasy_t :  public device_t,
+						   public device_vic20_expansion_card_interface
+{
+public:
+	// construction/destruction
+	vic20_speakeasy_t(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+	// optional information overrides
+	virtual machine_config_constructor device_mconfig_additions() const override;
+
+protected:
+	// device-level overrides
+	virtual void device_start() override;
+
+	// device_vic20_expansion_card_interface overrides
+	virtual uint8_t vic20_cd_r(address_space &space, offs_t offset, uint8_t data, int ram1, int ram2, int ram3, int blk1, int blk2, int blk3, int blk5, int io2, int io3) override;
+	virtual void vic20_cd_w(address_space &space, offs_t offset, uint8_t data, int ram1, int ram2, int ram3, int blk1, int blk2, int blk3, int blk5, int io2, int io3) override;
+
+private:
+	required_device<votrax_sc01_device> m_votrax;
+};
+
+
+// device type definition
+extern const device_type VIC20_SPEAKEASY;
+
+
+
+#endif