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-rw-r--r--src/devices/bus/mc10/ram.cpp78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/devices/bus/mc10/ram.cpp b/src/devices/bus/mc10/ram.cpp
new file mode 100644
index 00000000000..f6a6f488955
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+++ b/src/devices/bus/mc10/ram.cpp
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+// license:BSD-3-Clause
+// copyright-holders:tim lindner
+/***************************************************************************
+
+ ram.cpp
+
+ Code for emulating the Radio Shack 16K RAM Cartridge
+
+***************************************************************************/
+
+#include "emu.h"
+#include "ram.h"
+
+// #include "machine/ram.h"
+
+// #define VERBOSE (LOG_GENERAL )
+#include "logmacro.h"
+
+
+//**************************************************************************
+// TYPE DECLARATIONS
+//**************************************************************************
+
+namespace
+{
+ // ======================> mc10_pak_device
+
+ class mc10_pak_ram_device :
+ public device_t,
+ public device_mc10cart_interface
+ {
+ public:
+ // construction/destruction
+ mc10_pak_ram_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+ protected:
+ // device-level overrides
+ virtual void device_start() override;
+ private:
+ memory_share_creator<u8> m_share;
+ };
+};
+
+
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+DEFINE_DEVICE_TYPE_PRIVATE(MC10_PAK_RAM, device_mc10cart_interface, mc10_pak_ram_device, "mc10pakram", "Radio Shack 16K RAM Cartridge")
+
+
+
+//-------------------------------------------------
+// mc10_pak_device - constructor
+//-------------------------------------------------
+
+mc10_pak_ram_device::mc10_pak_ram_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, MC10_PAK_RAM, tag, owner, clock)
+ , device_mc10cart_interface(mconfig, *this)
+ , m_share(*this, "ext_ram", 1024*16, ENDIANNESS_BIG)
+{
+}
+
+
+
+//**************************************************************************
+// MACHINE FRAGMENTS AND ADDRESS MAPS
+//**************************************************************************
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void mc10_pak_ram_device::device_start()
+{
+ owning_slot().memspace().install_ram(0x5000, 0x8fff, &m_share[0]);
+}