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Diffstat (limited to 'src/mess/machine/c64_dela_ep7x8.c')
-rw-r--r--src/mess/machine/c64_dela_ep7x8.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/src/mess/machine/c64_dela_ep7x8.c b/src/mess/machine/c64_dela_ep7x8.c
new file mode 100644
index 00000000000..30e6c10fa32
--- /dev/null
+++ b/src/mess/machine/c64_dela_ep7x8.c
@@ -0,0 +1,157 @@
+/**********************************************************************
+
+ Dela 7x8K EPROM cartridge emulation
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#include "c64_dela_ep7x8.h"
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type C64_DELA_EP7X8 = &device_creator<c64_dela_ep7x8_cartridge_device>;
+
+
+//-------------------------------------------------
+// ROM( c64_dela_ep7x8 )
+//-------------------------------------------------
+
+ROM_START( c64_dela_ep7x8 )
+ ROM_REGION( 0x10000, "rom", 0 )
+ ROM_CART_LOAD( "rom1", 0x2000, 0x2000, ROM_MIRROR )
+ ROM_CART_LOAD( "rom2", 0x4000, 0x2000, ROM_MIRROR )
+ ROM_CART_LOAD( "rom3", 0x6000, 0x2000, ROM_MIRROR )
+ ROM_CART_LOAD( "rom4", 0x8000, 0x2000, ROM_MIRROR )
+ ROM_CART_LOAD( "rom5", 0xa000, 0x2000, ROM_MIRROR )
+ ROM_CART_LOAD( "rom6", 0xc000, 0x2000, ROM_MIRROR )
+ ROM_CART_LOAD( "rom7", 0xe000, 0x2000, ROM_MIRROR )
+ROM_END
+
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *c64_dela_ep7x8_cartridge_device::device_rom_region() const
+{
+ return ROM_NAME( c64_dela_ep7x8 );
+}
+
+
+//-------------------------------------------------
+// MACHINE_CONFIG_FRAGMENT( c64_dela_ep7x8 )
+//-------------------------------------------------
+
+static MACHINE_CONFIG_FRAGMENT( c64_dela_ep7x8 )
+ MCFG_CARTSLOT_ADD("rom1")
+ MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
+ MCFG_CARTSLOT_ADD("rom2")
+ MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
+ MCFG_CARTSLOT_ADD("rom3")
+ MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
+ MCFG_CARTSLOT_ADD("rom4")
+ MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
+ MCFG_CARTSLOT_ADD("rom5")
+ MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
+ MCFG_CARTSLOT_ADD("rom6")
+ MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
+ MCFG_CARTSLOT_ADD("rom7")
+ MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
+MACHINE_CONFIG_END
+
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor c64_dela_ep7x8_cartridge_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( c64_dela_ep7x8 );
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// c64_dela_ep7x8_cartridge_device - constructor
+//-------------------------------------------------
+
+c64_dela_ep7x8_cartridge_device::c64_dela_ep7x8_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, C64_DELA_EP7X8, "C64 Dela 7x8KB EPROM cartridge", tag, owner, clock),
+ device_c64_expansion_card_interface(mconfig, *this)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void c64_dela_ep7x8_cartridge_device::device_start()
+{
+ m_rom = memregion("rom")->base();
+
+ // state saving
+ save_item(NAME(m_bank));
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void c64_dela_ep7x8_cartridge_device::device_reset()
+{
+ m_bank = 0xfe;
+ m_exrom = 0;
+}
+
+
+//-------------------------------------------------
+// c64_cd_r - cartridge data read
+//-------------------------------------------------
+
+UINT8 c64_dela_ep7x8_cartridge_device::c64_cd_r(address_space &space, offs_t offset, int ba, int roml, int romh, int io1, int io2)
+{
+ UINT8 data = 0;
+
+ if (!roml)
+ {
+ offs_t addr = offset & 0x1fff;
+
+ if (!BIT(m_bank, 0)) data |= m_roml[addr];
+ if (!BIT(m_bank, 1)) data |= m_rom[0x2000 + addr];
+ if (!BIT(m_bank, 2)) data |= m_rom[0x4000 + addr];
+ if (!BIT(m_bank, 3)) data |= m_rom[0x6000 + addr];
+ if (!BIT(m_bank, 4)) data |= m_rom[0x8000 + addr];
+ if (!BIT(m_bank, 5)) data |= m_rom[0xa000 + addr];
+ if (!BIT(m_bank, 6)) data |= m_rom[0xc000 + addr];
+ if (!BIT(m_bank, 7)) data |= m_rom[0xe000 + addr];
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// c64_cd_w - cartridge data write
+//-------------------------------------------------
+
+void c64_dela_ep7x8_cartridge_device::c64_cd_w(address_space &space, offs_t offset, UINT8 data, int ba, int roml, int romh, int io1, int io2)
+{
+ if (!io1)
+ {
+ m_bank = data;
+
+ m_exrom = (data == 0xff);
+ }
+}