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Diffstat (limited to 'trunk/src/emu/machine/x76f100.h')
-rw-r--r--trunk/src/emu/machine/x76f100.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/trunk/src/emu/machine/x76f100.h b/trunk/src/emu/machine/x76f100.h
new file mode 100644
index 00000000000..0eab9d26347
--- /dev/null
+++ b/trunk/src/emu/machine/x76f100.h
@@ -0,0 +1,87 @@
+/*
+ * x76f100.h
+ *
+ * Secure SerialFlash
+ *
+ */
+
+#ifndef __X76F100_H__
+#define __X76F100_H__
+
+#define MCFG_X76F100_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, X76F100, 0)
+
+#include "machine/secflash.h"
+
+class x76f100_device : public device_secure_serial_flash
+{
+public:
+ // construction/destruction
+ x76f100_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ // device_nvram_interface overrides
+ virtual void nvram_default();
+ virtual void nvram_read(emu_file &file);
+ virtual void nvram_write(emu_file &file);
+
+ // device_secure_serial_flash implementations
+ virtual void cs_0();
+ virtual void cs_1();
+ virtual void rst_0();
+ virtual void rst_1();
+ virtual void scl_0();
+ virtual void scl_1();
+ virtual void sda_0();
+ virtual void sda_1();
+
+ // internal state
+ enum {
+ SIZE_WRITE_BUFFER = 8,
+ SIZE_RESPONSE_TO_RESET = 4,
+ SIZE_WRITE_PASSWORD = 8,
+ SIZE_READ_PASSWORD = 8,
+ SIZE_DATA = 112,
+
+ COMMAND_WRITE = 0x80,
+ COMMAND_READ = 0x81,
+ COMMAND_CHANGE_WRITE_PASSWORD = 0xfc,
+ COMMAND_CHANGE_READ_PASSWORD = 0xfe,
+ COMMAND_ACK_PASSWORD = 0x55
+ };
+
+ enum {
+ STATE_STOP,
+ STATE_RESPONSE_TO_RESET,
+ STATE_LOAD_COMMAND,
+ STATE_LOAD_PASSWORD,
+ STATE_VERIFY_PASSWORD,
+ STATE_READ_DATA,
+ STATE_WRITE_DATA
+ };
+
+ int state, bit, byte;
+ UINT8 command, shift;
+ UINT8 write_buffer[SIZE_WRITE_BUFFER];
+ UINT8 response_to_reset[SIZE_RESPONSE_TO_RESET];
+ UINT8 write_password[SIZE_WRITE_PASSWORD];
+ UINT8 read_password[SIZE_READ_PASSWORD];
+ UINT8 data[SIZE_DATA];
+
+ UINT8 *password();
+ void password_ok();
+ int data_offset();
+
+private:
+ inline void ATTR_PRINTF(3,4) verboselog(int n_level, const char *s_fmt, ...);
+};
+
+
+// device type definition
+extern const device_type X76F100;
+
+#endif