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-rw-r--r--trunk/src/emu/machine/ram.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/trunk/src/emu/machine/ram.h b/trunk/src/emu/machine/ram.h
new file mode 100644
index 00000000000..ea7bc50a5b0
--- /dev/null
+++ b/trunk/src/emu/machine/ram.h
@@ -0,0 +1,68 @@
+/*************************************************************************
+
+ RAM device
+
+ Provides a configurable amount of RAM to drivers
+
+**************************************************************************/
+
+#ifndef __RAM_H__
+#define __RAM_H__
+
+
+/***************************************************************************
+ CONSTANTS
+***************************************************************************/
+
+#define RAM_DEFAULT_VALUE 0xcd
+#define RAM_TAG "ram"
+
+/***************************************************************************
+ TYPE DEFINITIONS
+***************************************************************************/
+
+typedef struct _ram_config ram_config;
+struct _ram_config
+{
+ const char *default_size;
+ const char *extra_options;
+ UINT8 default_value;
+};
+
+
+/***************************************************************************
+ DEVICE CONFIGURATION MACROS
+***************************************************************************/
+
+DECLARE_LEGACY_DEVICE(RAM, ram);
+
+#define MCFG_RAM_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, RAM, 0) \
+ MCFG_DEVICE_CONFIG_DATA32(ram_config, default_value, RAM_DEFAULT_VALUE)
+
+#define MCFG_RAM_REMOVE(_tag) \
+ MCFG_DEVICE_REMOVE(_tag)
+
+#define MCFG_RAM_MODIFY(_tag) \
+ MCFG_DEVICE_MODIFY(_tag) \
+ MCFG_DEVICE_CONFIG_DATAPTR(ram_config, extra_options, NULL)
+
+#define MCFG_RAM_DEFAULT_SIZE(_default_size) \
+ MCFG_DEVICE_CONFIG_DATAPTR(ram_config, default_size, _default_size)
+
+#define MCFG_RAM_EXTRA_OPTIONS(_extra_options) \
+ MCFG_DEVICE_CONFIG_DATAPTR(ram_config, extra_options, _extra_options)
+
+#define MCFG_RAM_DEFAULT_VALUE(_default_value) \
+ MCFG_DEVICE_CONFIG_DATA32(ram_config, default_value, _default_value)
+
+
+/***************************************************************************
+ FUNCTION PROTOTYPES
+***************************************************************************/
+
+UINT32 ram_get_size(device_t *device);
+UINT8 *ram_get_ptr(device_t *device);
+UINT32 ram_parse_string(const char *s);
+
+#endif /* __RAM_H__ */