(MESS) bw2: Added expansion slot interface and RAMCARD expansion device. [Curt Coder]

2025-07-05 18:08:04 +03:00 · 2012-11-16 18:34:35 +00:00 · 2012-11-16 18:34:35 +00:00 · 954c61d7c8
commit 954c61d7c8
parent 51346049f6
6 changed files with 519 additions and 0 deletions
--- a/.gitattributes
+++ b/.gitattributes
@ -6641,6 +6641,10 @@ src/mess/machine/bebox.c svneol=native#text/plain
 src/mess/machine/beta.c svneol=native#text/plain
 src/mess/machine/beta.h svneol=native#text/plain
 src/mess/machine/bk.c svneol=native#text/plain
+src/mess/machine/bw2_ramcard.c svneol=native#text/plain
+src/mess/machine/bw2_ramcard.h svneol=native#text/plain
+src/mess/machine/bw2exp.c svneol=native#text/plain
+src/mess/machine/bw2exp.h svneol=native#text/plain
 src/mess/machine/c128_comal80.c svneol=native#text/plain
 src/mess/machine/c128_comal80.h svneol=native#text/plain
 src/mess/machine/c1541.c svneol=native#text/plain
--- a/src/mess/machine/bw2_ramcard.c
+++ b/src/mess/machine/bw2_ramcard.c
@ -0,0 +1,129 @@
+/**********************************************************************
+
+    Bondwell 2 RAMCARD emulation
+
+    Copyright MESS Team.
+    Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#include "bw2_ramcard.h"
+
+
+
+//**************************************************************************
+//  DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type BW2_RAMCARD = &device_creator<bw2_ramcard_device>;
+
+
+//-------------------------------------------------
+//  ROM( bw2_ramcard )
+//-------------------------------------------------
+
+ROM_START( bw2_ramcard )
+	ROM_REGION( 0x4000, "ramcard", 0 )
+	ROM_LOAD( "ramcard-10.ic10", 0x0000, 0x4000, CRC(68cde1ba) SHA1(a776a27d64f7b857565594beb63aa2cd692dcf04) )
+ROM_END
+
+
+//-------------------------------------------------
+//  rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *bw2_ramcard_device::device_rom_region() const
+{
+	return ROM_NAME( bw2_ramcard );
+}
+
+
+
+//**************************************************************************
+//  LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+//  bw2_ramcard_device - constructor
+//-------------------------------------------------
+
+bw2_ramcard_device::bw2_ramcard_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+	: device_t(mconfig, BW2_RAMCARD, "RAMCARD", tag, owner, clock),
+		device_bw2_expansion_slot_interface(mconfig, *this),
+		m_ram(*this, "ram"),
+		m_en(0),
+		m_bank(0)
+{
+}
+
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void bw2_ramcard_device::device_start()
+{
+	// find memory regions
+	m_rom = memregion("ramcard")->base();
+
+	// allocate memory
+	m_ram.allocate(512 * 1024);
+
+	// state saving
+	save_item(NAME(m_en));
+	save_item(NAME(m_bank));
+}
+
+
+//-------------------------------------------------
+//  device_reset - device-specific reset
+//-------------------------------------------------
+
+void bw2_ramcard_device::device_reset()
+{
+	m_en = 0;
+	m_bank = 0;
+}
+
+
+//-------------------------------------------------
+//  bw2_cd_r - cartridge data read
+//-------------------------------------------------
+
+UINT8 bw2_ramcard_device::bw2_cd_r(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6)
+{
+	if (!ram2)
+	{
+		data = m_rom[offset & 0x3fff];
+	}
+	else if (m_en && !ram5)
+	{
+		data = m_ram[(m_bank << 15) | offset];
+	}
+
+	return data;
+}
+
+
+//-------------------------------------------------
+//  bw2_cd_r - cartridge data write
+//-------------------------------------------------
+
+void bw2_ramcard_device::bw2_cd_w(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6)
+{
+	if (m_en && !ram5)
+	{
+		m_ram[(m_bank << 15) | offset] = data;
+	}
+}
+
+
+//-------------------------------------------------
+//  bw2_slot_w - slot write
+//-------------------------------------------------
+
+void bw2_ramcard_device::bw2_slot_w(address_space &space, offs_t offset, UINT8 data)
+{
+	m_en = 1;
+	m_bank = data & 0x0f;
+}
--- a/src/mess/machine/bw2_ramcard.h
+++ b/src/mess/machine/bw2_ramcard.h
@ -0,0 +1,61 @@
+/**********************************************************************
+
+    Bondwell 2 RAMCARD emulation
+
+    Copyright MESS Team.
+    Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __BW2_RAMCARD__
+#define __BW2_RAMCARD__
+
+#include "emu.h"
+#include "machine/bw2exp.h"
+
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> bw2_ramcard_device
+
+class bw2_ramcard_device :  public device_t,
+							public device_bw2_expansion_slot_interface
+{
+public:
+	// construction/destruction
+	bw2_ramcard_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+	// optional information overrides
+	virtual const rom_entry *device_rom_region() const;
+
+protected:
+	// device-level overrides
+	virtual void device_config_complete() { m_shortname = "bw2_ramcard"; }
+	virtual void device_start();
+	virtual void device_reset();
+
+	// device_bw2_expansion_slot_interface overrides
+	virtual UINT8 bw2_cd_r(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6);
+	virtual void bw2_cd_w(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6);
+	virtual void bw2_slot_w(address_space &space, offs_t offset, UINT8 data);
+
+private:
+	optional_shared_ptr<UINT8> m_ram;
+	const UINT8 *m_rom;
+
+	int m_en;
+	UINT8 m_bank;
+};
+
+
+// device type definition
+extern const device_type BW2_RAMCARD;
+
+
+
+#endif
--- a/src/mess/machine/bw2exp.c
+++ b/src/mess/machine/bw2exp.c
@ -0,0 +1,188 @@
+/**********************************************************************
+
+    Bondwell 2 Expansion Port emulation
+
+    Copyright MESS Team.
+    Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#include "machine/bw2exp.h"
+
+
+
+//**************************************************************************
+//  GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type BW2_EXPANSION_SLOT = &device_creator<bw2_expansion_slot_device>;
+
+
+
+//**************************************************************************
+//  CARD INTERFACE
+//**************************************************************************
+
+//-------------------------------------------------
+//  device_bw2_expansion_slot_interface - constructor
+//-------------------------------------------------
+
+device_bw2_expansion_slot_interface::device_bw2_expansion_slot_interface(const machine_config &mconfig, device_t &device)
+	: device_slot_card_interface(mconfig,device)
+{
+	m_slot = dynamic_cast<bw2_expansion_slot_device *>(device.owner());
+}
+
+
+//-------------------------------------------------
+//  ~device_bw2_expansion_slot_interface - destructor
+//-------------------------------------------------
+
+device_bw2_expansion_slot_interface::~device_bw2_expansion_slot_interface()
+{
+}
+
+
+
+//**************************************************************************
+//  LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+//  bw2_expansion_slot_device - constructor
+//-------------------------------------------------
+
+bw2_expansion_slot_device::bw2_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+	device_t(mconfig, BW2_EXPANSION_SLOT, "Bondwell 2 expansion port", tag, owner, clock),
+	device_slot_interface(mconfig, *this)
+{
+}
+
+
+//-------------------------------------------------
+//  bw2_expansion_slot_device - destructor
+//-------------------------------------------------
+
+bw2_expansion_slot_device::~bw2_expansion_slot_device()
+{
+}
+
+
+//-------------------------------------------------
+//  device_start - device-specific startup
+//-------------------------------------------------
+
+void bw2_expansion_slot_device::device_start()
+{
+	m_cart = dynamic_cast<device_bw2_expansion_slot_interface *>(get_card_device());
+}
+
+
+//-------------------------------------------------
+//  device_reset - device-specific reset
+//-------------------------------------------------
+
+void bw2_expansion_slot_device::device_reset()
+{
+	if (m_cart != NULL)
+	{
+		m_cart->device().reset();
+	}
+}
+
+
+//-------------------------------------------------
+//  cd_r - cartridge data read
+//-------------------------------------------------
+
+UINT8 bw2_expansion_slot_device::cd_r(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6)
+{
+	if (m_cart != NULL)
+	{
+		data = m_cart->bw2_cd_r(space, offset, data, ram2, ram3, ram4, ram5, ram6);
+	}
+
+	return data;
+}
+
+
+//-------------------------------------------------
+//  cd_w - cartridge data write
+//-------------------------------------------------
+
+void bw2_expansion_slot_device::cd_w(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6)
+{
+	if (m_cart != NULL)
+	{
+		m_cart->bw2_cd_w(space, offset, data, ram2, ram3, ram4, ram5, ram6);
+	}
+}
+
+
+//-------------------------------------------------
+//  slot_r - slot read
+//-------------------------------------------------
+
+READ8_MEMBER( bw2_expansion_slot_device::slot_r )
+{
+	UINT8 data = 0xff;
+
+	if (m_cart != NULL)
+	{
+		data = m_cart->bw2_slot_r(space, offset);
+	}
+
+	return data;
+}
+
+
+//-------------------------------------------------
+//  slot_w - slot write
+//-------------------------------------------------
+
+WRITE8_MEMBER( bw2_expansion_slot_device::slot_w )
+{
+	if (m_cart != NULL)
+	{
+		m_cart->bw2_slot_w(space, offset, data);
+	}
+}
+
+
+//-------------------------------------------------
+//  modsel_r - modsel read
+//-------------------------------------------------
+
+READ8_MEMBER( bw2_expansion_slot_device::modsel_r )
+{
+	UINT8 data = 0xff;
+
+	if (m_cart != NULL)
+	{
+		data = m_cart->bw2_modsel_r(space, offset);
+	}
+
+	return data;
+}
+
+
+//-------------------------------------------------
+//  modsel_w - modsel write
+//-------------------------------------------------
+
+WRITE8_MEMBER( bw2_expansion_slot_device::modsel_w )
+{
+	if (m_cart != NULL)
+	{
+		m_cart->bw2_modsel_w(space, offset, data);
+	}
+}
+
+
+//-------------------------------------------------
+//  SLOT_INTERFACE( bw2_expansion_cards )
+//-------------------------------------------------
+
+SLOT_INTERFACE_START( bw2_expansion_cards )
+	SLOT_INTERFACE("ramcard", BW2_RAMCARD)
+SLOT_INTERFACE_END
--- a/src/mess/machine/bw2exp.h
+++ b/src/mess/machine/bw2exp.h
@ -0,0 +1,135 @@
+/**********************************************************************
+
+    Bondwell 2 Expansion Port emulation
+
+    Copyright MESS Team.
+    Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************
+
+                     5V       1      26      12V
+                     D3       2      27      12V
+                     A1       3      28      A3
+                     A2       4      29      A4
+                  _CTSB       5      30      A5
+                   _RST       6      31      A6
+                _MODSEL       7      32      A7
+                  16MHZ       8      33      A8
+                  _IORQ       9      34      A9
+                    _RD      10      35      A10
+                     D0      11      36      A11
+                     D1      12      37      A12
+                     D2      13      38      A13
+                     A0      14      39      A14
+                     D4      15      40      _RAM6
+                     D5      16      41      _RAM5
+                     D6      17      42      _RFSH
+                     D7      18      43      _WR
+                   DCDB      19      44      SELECT
+                  _DTRB      20      45      _RAM2
+                  _RTSB      21      46      _RAM3
+                  _DSRB      22      47      _RAM4
+                   TXDB      23      48      _SLOT
+                   RXDB      24      49      GND
+                    GND      25      50      5V
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __BW2_EXPANSION_SLOT__
+#define __BW2_EXPANSION_SLOT__
+
+#include "emu.h"
+
+
+
+//**************************************************************************
+//  CONSTANTS
+//**************************************************************************
+
+#define BW2_EXPANSION_SLOT_TAG      "exp"
+
+
+
+//**************************************************************************
+//  INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_BW2_EXPANSION_SLOT_ADD(_tag, _clock, _slot_intf, _def_slot, _def_inp) \
+	MCFG_DEVICE_ADD(_tag, BW2_EXPANSION_SLOT, _clock) \
+	MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, _def_inp, false)
+
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> bw2_expansion_slot_device
+
+class device_bw2_expansion_slot_interface;
+
+class bw2_expansion_slot_device : public device_t,
+									public device_slot_interface
+{
+public:
+	// construction/destruction
+	bw2_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+	virtual ~bw2_expansion_slot_device();
+
+	// computer interface
+	UINT8 cd_r(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6);
+	void cd_w(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6);
+
+	DECLARE_READ8_MEMBER( slot_r );
+	DECLARE_WRITE8_MEMBER( slot_w );
+
+	DECLARE_READ8_MEMBER( modsel_r );
+	DECLARE_WRITE8_MEMBER( modsel_w );
+
+protected:
+	// device-level overrides
+	virtual void device_start();
+	virtual void device_reset();
+
+	device_bw2_expansion_slot_interface *m_cart;
+};
+
+
+// ======================> device_bw2_expansion_slot_interface
+
+// class representing interface-specific live bw2_expansion card
+class device_bw2_expansion_slot_interface : public device_slot_card_interface
+{
+public:
+	// construction/destruction
+	device_bw2_expansion_slot_interface(const machine_config &mconfig, device_t &device);
+	virtual ~device_bw2_expansion_slot_interface();
+
+	virtual UINT8 bw2_cd_r(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6) { return data; };
+	virtual void bw2_cd_w(address_space &space, offs_t offset, UINT8 data, int ram2, int ram3, int ram4, int ram5, int ram6) { };
+
+	virtual UINT8 bw2_slot_r(address_space &space, offs_t offset) { return 0xff; }
+	virtual void bw2_slot_w(address_space &space, offs_t offset, UINT8 data) { }
+
+	virtual UINT8 bw2_modsel_r(address_space &space, offs_t offset) { return 0xff; }
+	virtual void bw2_modsel_w(address_space &space, offs_t offset, UINT8 data) { }
+
+protected:
+	bw2_expansion_slot_device *m_slot;
+};
+
+
+// device type definition
+extern const device_type BW2_EXPANSION_SLOT;
+
+
+// slot devices
+#include "machine/bw2_ramcard.h"
+
+SLOT_INTERFACE_EXTERN( bw2_expansion_cards );
+
+
+
+#endif
--- a/src/mess/mess.mak
+++ b/src/mess/mess.mak
@ -778,6 +778,8 @@ $(MESSOBJ)/bnpo.a:				\

 $(MESSOBJ)/bondwell.a:			\
 	$(MESS_DRIVERS)/bw2.o		\
+	$(MESS_MACHINE)/bw2exp.o	\
+	$(MESS_MACHINE)/bw2_ramcard.o	\
 	$(MESS_DRIVERS)/bw12.o		\

 $(MESSOBJ)/booth.a:				\