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author Miodrag Milanovic <mmicko@gmail.com>2015-09-13 08:41:44 +0200
committer Miodrag Milanovic <mmicko@gmail.com>2015-09-13 08:41:44 +0200
commitf88cefad27a1737c76e09d99c9fb43e173506081 (patch)
tree2d8167d03579c46e226471747eb4407bd00ed6fa /src/devices/machine/i2cmem.h
parente92ac9e0fa8e99869894bea00589bbb526be30aa (diff)
Move all devices into separate part of src tree (nw)
Diffstat (limited to 'src/devices/machine/i2cmem.h')
-rw-r--r--src/devices/machine/i2cmem.h158
1 files changed, 158 insertions, 0 deletions
diff --git a/src/devices/machine/i2cmem.h b/src/devices/machine/i2cmem.h
new file mode 100644
index 00000000000..ce1bbdb3141
--- /dev/null
+++ b/src/devices/machine/i2cmem.h
@@ -0,0 +1,158 @@
+// license:BSD-3-Clause
+// copyright-holders:smf
+/***************************************************************************
+
+ i2cmem.h
+
+ I2C Memory
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __I2CMEM_H__
+#define __I2CMEM_H__
+
+
+/***************************************************************************
+ CONSTANTS
+***************************************************************************/
+
+#define I2CMEM_SLAVE_ADDRESS ( 0xa0 )
+#define I2CMEM_SLAVE_ADDRESS_ALT ( 0xb0 )
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_I2CMEM_ADD( _tag ) \
+ MCFG_DEVICE_ADD( _tag, I2CMEM, 0 )
+
+#define MCFG_I2CMEM_ADDRESS( address ) \
+ i2cmem_device::set_address(*device, address);
+#define MCFG_I2CMEM_PAGE_SIZE( page_size ) \
+ i2cmem_device::set_page_size(*device, page_size);
+#define MCFG_I2CMEM_DATA_SIZE(data_size) \
+ i2cmem_device::set_data_size(*device, data_size);
+#define MCFG_I2CMEM_E0(e0) \
+ i2cmem_device::set_e0(*device, e0);
+#define MCFG_I2CMEM_E1(e1) \
+ i2cmem_device::set_e1(*device, e1);
+#define MCFG_I2CMEM_E2(e2) \
+ i2cmem_device::set_e2(*device, e2);
+#define MCFG_I2CMEM_WC(wc) \
+ i2cmem_device::set_wc(*device, wc);
+
+#define MCFG_X2404P_ADD( _tag ) \
+ MCFG_I2CMEM_ADD( _tag ) \
+ MCFG_I2CMEM_PAGE_SIZE(8) \
+ MCFG_I2CMEM_DATA_SIZE(0x200)
+
+#define MCFG_24C01_ADD( _tag ) \
+ MCFG_I2CMEM_ADD( _tag ) \
+ MCFG_I2CMEM_PAGE_SIZE(4) \
+ MCFG_I2CMEM_DATA_SIZE(0x80)
+
+#define MCFG_24C02_ADD( _tag ) \
+ MCFG_I2CMEM_ADD( _tag ) \
+ MCFG_I2CMEM_PAGE_SIZE(4) \
+ MCFG_I2CMEM_DATA_SIZE(0x100)
+
+#define MCFG_24C08_ADD( _tag ) \
+ MCFG_I2CMEM_ADD( _tag ) \
+ MCFG_I2CMEM_DATA_SIZE(0x400)
+
+#define MCFG_24C16_ADD( _tag ) \
+ MCFG_I2CMEM_ADD( _tag ) \
+ MCFG_I2CMEM_PAGE_SIZE(8) \
+ MCFG_I2CMEM_DATA_SIZE(0x800)
+
+#define MCFG_24C16A_ADD( _tag ) \
+ MCFG_I2CMEM_ADD( _tag ) \
+ MCFG_I2CMEM_DATA_SIZE(0x800)
+
+#define MCFG_24C64_ADD( _tag ) \
+ MCFG_I2CMEM_ADD( _tag ) \
+ MCFG_I2CMEM_PAGE_SIZE(8) \
+ MCFG_I2CMEM_DATA_SIZE(0x2000)
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> i2cmem_device
+
+class i2cmem_device :
+ public device_t,
+ public device_memory_interface,
+ public device_nvram_interface
+{
+public:
+ // construction/destruction
+ i2cmem_device( const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock );
+
+ static void set_address(device_t &device, int address) { downcast<i2cmem_device &>(device).m_slave_address = address; }
+ static void set_page_size(device_t &device, int page_size) { downcast<i2cmem_device &>(device).m_page_size = page_size; }
+ static void set_data_size(device_t &device, int data_size) { downcast<i2cmem_device &>(device).m_data_size = data_size; }
+ static void set_e0(device_t &device, int e0) { downcast<i2cmem_device &>(device).m_e0 = e0; }
+ static void set_e1(device_t &device, int e1) { downcast<i2cmem_device &>(device).m_e1 = e1; }
+ static void set_e2(device_t &device, int e2) { downcast<i2cmem_device &>(device).m_e2 = e2; }
+ static void set_wc(device_t &device, int wc) { downcast<i2cmem_device &>(device).m_wc = wc; }
+
+ // I/O operations
+ DECLARE_WRITE_LINE_MEMBER( write_e0 );
+ DECLARE_WRITE_LINE_MEMBER( write_e1 );
+ DECLARE_WRITE_LINE_MEMBER( write_e2 );
+ DECLARE_WRITE_LINE_MEMBER( write_sda );
+ DECLARE_WRITE_LINE_MEMBER( write_scl );
+ DECLARE_WRITE_LINE_MEMBER( write_wc );
+ DECLARE_READ_LINE_MEMBER( read_sda );
+
+protected:
+ // device-level overrides
+ virtual void device_config_complete();
+ virtual void device_start();
+ virtual void device_reset();
+
+ // device_memory_interface overrides
+ virtual const address_space_config *memory_space_config( address_spacenum spacenum = AS_0 ) const;
+
+ // device_nvram_interface overrides
+ virtual void nvram_default();
+ virtual void nvram_read( emu_file &file );
+ virtual void nvram_write( emu_file &file );
+
+ // internal helpers
+ int address_mask();
+ int select_device();
+ int data_offset();
+
+ // device-specific configuration
+ address_space_config m_space_config;
+
+ // internal state
+ int m_slave_address;
+ int m_page_size;
+ int m_data_size;
+ int m_scl;
+ int m_sdaw;
+ int m_e0;
+ int m_e1;
+ int m_e2;
+ int m_wc;
+ int m_sdar;
+ int m_state;
+ int m_bits;
+ int m_shift;
+ int m_devsel;
+ int m_byteaddr;
+ dynamic_buffer m_page;
+ int m_page_offset;
+};
+
+
+// device type definition
+extern const device_type I2CMEM;
+
+#endif /* __I2CMEM_H__ */