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Diffstat (limited to 'src/emu/machine/eeprom.h')
-rw-r--r--src/emu/machine/eeprom.h56
1 files changed, 45 insertions, 11 deletions
diff --git a/src/emu/machine/eeprom.h b/src/emu/machine/eeprom.h
index 7ac10097ef5..e90228d7a55 100644
--- a/src/emu/machine/eeprom.h
+++ b/src/emu/machine/eeprom.h
@@ -49,11 +49,20 @@
//**************************************************************************
#define MCFG_EEPROM_SIZE(_cells, _cellbits) \
- base_eeprom_device::static_set_size(*device, _cells, _cellbits);
+ eeprom_base_device::static_set_size(*device, _cells, _cellbits);
#define MCFG_EEPROM_DATA(_data, _size) \
- base_eeprom_device::static_set_default_data(*device, _data, _size);
+ eeprom_base_device::static_set_default_data(*device, _data, _size);
#define MCFG_EEPROM_DEFAULT_VALUE(_value) \
- base_eeprom_device::static_set_default_value(*device, _value);
+ eeprom_base_device::static_set_default_value(*device, _value);
+
+#define MCFG_EEPROM_WRITE_TIME(_value) \
+ eeprom_base_device::static_set_timing(*device, eeprom_base_device::WRITE_TIME, _value);
+#define MCFG_EEPROM_WRITE_ALL_TIME(_value) \
+ eeprom_base_device::static_set_timing(*device, eeprom_base_device::WRITE_ALL_TIME, _value);
+#define MCFG_EEPROM_ERASE_TIME(_value) \
+ eeprom_base_device::static_set_timing(*device, eeprom_base_device::ERASE_TIME, _value);
+#define MCFG_EEPROM_ERASE_ALL_TIME(_value) \
+ eeprom_base_device::static_set_timing(*device, eeprom_base_device::ERASE_ALL_TIME, _value);
@@ -61,27 +70,44 @@
// TYPE DEFINITIONS
//**************************************************************************
-// ======================> base_eeprom_device
+// ======================> eeprom_base_device
-class base_eeprom_device : public device_t,
+class eeprom_base_device : public device_t,
public device_memory_interface,
public device_nvram_interface
{
protected:
// construction/destruction
- base_eeprom_device(const machine_config &mconfig, device_type devtype, const char *name, const char *tag, device_t *owner, const char *shortname, const char *file);
+ eeprom_base_device(const machine_config &mconfig, device_type devtype, const char *name, const char *tag, device_t *owner, const char *shortname, const char *file);
public:
+ // timing constants
+ enum timing_type
+ {
+ WRITE_TIME, // default = 2ms
+ WRITE_ALL_TIME, // default = 8ms
+ ERASE_TIME, // default = 1ms
+ ERASE_ALL_TIME, // default = 8ms
+ TIMING_COUNT
+ };
+
// inline configuration helpers
static void static_set_size(device_t &device, int cells, int cellbits);
static void static_set_default_data(device_t &device, const UINT8 *data, UINT32 size);
static void static_set_default_data(device_t &device, const UINT16 *data, UINT32 size);
static void static_set_default_value(device_t &device, UINT32 value);
-
- // read/write data
- UINT32 read_data(offs_t address);
- void write_data(offs_t address, UINT32 data);
-
+ static void static_set_timing(device_t &device, timing_type type, attotime duration);
+
+ // read/write/erase data
+ UINT32 read(offs_t address);
+ void write(offs_t address, UINT32 data);
+ void write_all(UINT32 data);
+ void erase(offs_t address);
+ void erase_all();
+
+ // status
+ bool ready() const { return machine().time() >= m_completion_time; }
+
protected:
// device-level overrides
virtual void device_validity_check(validity_checker &valid) const;
@@ -96,6 +122,10 @@ protected:
virtual void nvram_read(emu_file &file);
virtual void nvram_write(emu_file &file);
+ // internal read/write without side-effects
+ UINT32 internal_read(offs_t address);
+ void internal_write(offs_t address, UINT32 data);
+
// configuration state
UINT32 m_cells;
UINT8 m_address_bits;
@@ -105,6 +135,10 @@ protected:
UINT32 m_default_data_size;
UINT32 m_default_value;
bool m_default_value_set;
+ attotime m_operation_time[TIMING_COUNT];
+
+ // live state
+ attotime m_completion_time;
};