summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/vic20/megacart.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/vic20/megacart.h')
-rw-r--r--src/devices/bus/vic20/megacart.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/src/devices/bus/vic20/megacart.h b/src/devices/bus/vic20/megacart.h
new file mode 100644
index 00000000000..5e9f82b10bf
--- /dev/null
+++ b/src/devices/bus/vic20/megacart.h
@@ -0,0 +1,60 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Mega-Cart cartridge emulation
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __VIC20_MEGACART__
+#define __VIC20_MEGACART__
+
+#include "emu.h"
+#include "exp.h"
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> vic20_megacart_device
+
+class vic20_megacart_device : public device_t,
+ public device_vic20_expansion_card_interface,
+ public device_nvram_interface
+{
+public:
+ // construction/destruction
+ vic20_megacart_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ // device_nvram_interface overrides
+ virtual void nvram_default() { }
+ virtual void nvram_read(emu_file &file) { file.read(m_nvram, m_nvram.bytes()); }
+ virtual void nvram_write(emu_file &file) { file.write(m_nvram, m_nvram.bytes()); }
+
+ // device_vic20_expansion_card_interface overrides
+ virtual UINT8 vic20_cd_r(address_space &space, offs_t offset, UINT8 data, int ram1, int ram2, int ram3, int blk1, int blk2, int blk3, int blk5, int io2, int io3);
+ virtual void vic20_cd_w(address_space &space, offs_t offset, UINT8 data, int ram1, int ram2, int ram3, int blk1, int blk2, int blk3, int blk5, int io2, int io3);
+
+private:
+ int m_nvram_en;
+};
+
+
+// device type definition
+extern const device_type VIC20_MEGACART;
+
+
+
+#endif