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author | 2015-09-13 08:41:44 +0200 | |
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committer | 2015-09-13 08:41:44 +0200 | |
commit | f88cefad27a1737c76e09d99c9fb43e173506081 (patch) | |
tree | 2d8167d03579c46e226471747eb4407bd00ed6fa /src/devices/machine/i2cmem.h | |
parent | e92ac9e0fa8e99869894bea00589bbb526be30aa (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.h | 158 |
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__ */ |