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-rw-r--r--src/devices/machine/dimm_spd.h49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/devices/machine/dimm_spd.h b/src/devices/machine/dimm_spd.h
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+++ b/src/devices/machine/dimm_spd.h
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+// license:BSD-3-Clause
+// copyright-holders:R. Belmont
+#ifndef MAME_MACHINE_DIMM_SPD_H
+#define MAME_MACHINE_DIMM_SPD_H
+
+#pragma once
+
+#include "machine/i2chle.h"
+class dimm_spd_device : public device_t, public i2c_hle_interface
+{
+public:
+ // construction/destruction
+ dimm_spd_device(const machine_config &mconfig, const char *tag, device_t *owner)
+ : dimm_spd_device(mconfig, tag, owner, (uint32_t)0)
+ {
+ }
+
+ dimm_spd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ typedef enum
+ {
+ SIZE_SLOT_EMPTY = 0,
+ SIZE_4_MIB,
+ SIZE_8_MIB,
+ SIZE_16_MIB,
+ SIZE_32_MIB,
+ SIZE_64_MIB,
+ SIZE_128_MIB,
+ SIZE_256_MIB
+ } dimm_size_t;
+
+ void set_dimm_size(dimm_size_t size);
+
+protected:
+ // device_t overrides
+ virtual void device_start() override ATTR_COLD;
+ // i2c_hle_interface overrides
+ virtual u8 read_data(u16 offset) override;
+ virtual const char *get_tag() override { return tag(); }
+
+private:
+ u8 m_data[256];
+ dimm_size_t m_size;
+};
+
+// device type definition
+DECLARE_DEVICE_TYPE(DIMM_SPD, dimm_spd_device)
+
+#endif // MAME_MACHINE_DIMM_SPD_H