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Diffstat (limited to 'src/devices/bus/einstein/pipe/silicon_disc.h')
-rw-r--r--src/devices/bus/einstein/pipe/silicon_disc.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/devices/bus/einstein/pipe/silicon_disc.h b/src/devices/bus/einstein/pipe/silicon_disc.h
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+++ b/src/devices/bus/einstein/pipe/silicon_disc.h
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+// license: GPL-2.0+
+// copyright-holders: Dirk Best
+/***************************************************************************
+
+ Silicon Disc
+
+ A 256k RAM drive that gets accessed as drive 3.
+
+***************************************************************************/
+
+#ifndef MAME_BUS_EINSTEIN_SILICON_DISC_H
+#define MAME_BUS_EINSTEIN_SILICON_DISC_H
+
+#pragma once
+
+#include "pipe.h"
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> einstein_silicon_disc_device
+
+class einstein_silicon_disc_device : public device_t, public device_tatung_pipe_interface
+{
+public:
+ // construction/destruction
+ einstein_silicon_disc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ DECLARE_WRITE8_MEMBER(sector_low_w);
+ DECLARE_WRITE8_MEMBER(sector_high_w);
+ DECLARE_READ8_MEMBER(ram_r);
+ DECLARE_WRITE8_MEMBER(ram_w);
+
+protected:
+ virtual const tiny_rom_entry *device_rom_region() const override;
+ virtual void device_start() override;
+ virtual void device_reset() override;
+
+private:
+ DECLARE_ADDRESS_MAP(map, 8);
+
+ required_memory_region m_rom;
+ required_memory_region m_bios;
+
+ std::unique_ptr<uint8_t[]> m_ram;
+ uint16_t m_sector;
+};
+
+// device type definition
+DECLARE_DEVICE_TYPE(EINSTEIN_SILICON_DISC, einstein_silicon_disc_device)
+
+#endif // MAME_BUS_EINSTEIN_SILICON_DISC_H