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Diffstat (limited to 'src/devices/bus/c64/dela_ep7x8.cpp')
-rw-r--r--src/devices/bus/c64/dela_ep7x8.cpp133
1 files changed, 133 insertions, 0 deletions
diff --git a/src/devices/bus/c64/dela_ep7x8.cpp b/src/devices/bus/c64/dela_ep7x8.cpp
new file mode 100644
index 00000000000..f79b3828fe5
--- /dev/null
+++ b/src/devices/bus/c64/dela_ep7x8.cpp
@@ -0,0 +1,133 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Dela 7x8K EPROM cartridge emulation
+
+**********************************************************************/
+
+#include "dela_ep7x8.h"
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type C64_DELA_EP7X8 = &device_creator<c64_dela_ep7x8_cartridge_device>;
+
+
+//-------------------------------------------------
+// MACHINE_CONFIG_FRAGMENT( c64_dela_ep7x8 )
+//-------------------------------------------------
+
+static MACHINE_CONFIG_FRAGMENT( c64_dela_ep7x8 )
+ MCFG_GENERIC_SOCKET_ADD("rom1", generic_linear_slot, NULL)
+ MCFG_GENERIC_EXTENSIONS("bin,rom")
+ MCFG_GENERIC_SOCKET_ADD("rom2", generic_linear_slot, NULL)
+ MCFG_GENERIC_EXTENSIONS("bin,rom")
+ MCFG_GENERIC_SOCKET_ADD("rom3", generic_linear_slot, NULL)
+ MCFG_GENERIC_EXTENSIONS("bin,rom")
+ MCFG_GENERIC_SOCKET_ADD("rom4", generic_linear_slot, NULL)
+ MCFG_GENERIC_EXTENSIONS("bin,rom")
+ MCFG_GENERIC_SOCKET_ADD("rom5", generic_linear_slot, NULL)
+ MCFG_GENERIC_EXTENSIONS("bin,rom")
+ MCFG_GENERIC_SOCKET_ADD("rom6", generic_linear_slot, NULL)
+ MCFG_GENERIC_EXTENSIONS("bin,rom")
+ MCFG_GENERIC_SOCKET_ADD("rom7", generic_linear_slot, NULL)
+ MCFG_GENERIC_EXTENSIONS("bin,rom")
+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, "ep7x8", __FILE__),
+ device_c64_expansion_card_interface(mconfig, *this),
+ m_eprom1(*this, "rom1"),
+ m_eprom2(*this, "rom2"),
+ m_eprom3(*this, "rom3"),
+ m_eprom4(*this, "rom4"),
+ m_eprom5(*this, "rom5"),
+ m_eprom6(*this, "rom6"),
+ m_eprom7(*this, "rom7")
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void c64_dela_ep7x8_cartridge_device::device_start()
+{
+ // 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, UINT8 data, int sphi2, int ba, int roml, int romh, int io1, int io2)
+{
+ if (!roml)
+ {
+ offs_t addr = offset & 0x1fff;
+
+ if (!BIT(m_bank, 0)) data |= m_roml[addr];
+ if (!BIT(m_bank, 1)) data |= m_eprom1->read_rom(space, addr);
+ if (!BIT(m_bank, 2)) data |= m_eprom2->read_rom(space, addr);
+ if (!BIT(m_bank, 3)) data |= m_eprom3->read_rom(space, addr);
+ if (!BIT(m_bank, 4)) data |= m_eprom4->read_rom(space, addr);
+ if (!BIT(m_bank, 5)) data |= m_eprom5->read_rom(space, addr);
+ if (!BIT(m_bank, 6)) data |= m_eprom6->read_rom(space, addr);
+ if (!BIT(m_bank, 7)) data |= m_eprom7->read_rom(space, 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 sphi2, int ba, int roml, int romh, int io1, int io2)
+{
+ if (!io1)
+ {
+ m_bank = data;
+
+ m_exrom = (data == 0xff);
+ }
+}