--- /dev/null
+*******************************************************************************
+** ARECA FIRMWARE SPEC
+*******************************************************************************
+** Usage of IOP331 adapter
+** (All In/Out is in IOP331's view)
+** 1. Message 0 --> InitThread message and retrun code
+** 2. Doorbell is used for RS-232 emulation
+** inDoorBell : bit0 -- data in ready
+** (DRIVER DATA WRITE OK)
+** bit1 -- data out has been read
+** (DRIVER DATA READ OK)
+** outDooeBell: bit0 -- data out ready
+** (IOP331 DATA WRITE OK)
+** bit1 -- data in has been read
+** (IOP331 DATA READ OK)
+** 3. Index Memory Usage
+** offset 0xf00 : for RS232 out (request buffer)
+** offset 0xe00 : for RS232 in (scratch buffer)
+** offset 0xa00 : for inbound message code message_rwbuffer
+** (driver send to IOP331)
+** offset 0xa00 : for outbound message code message_rwbuffer
+** (IOP331 send to driver)
+** 4. RS-232 emulation
+** Currently 128 byte buffer is used
+** 1st uint32_t : Data length (1--124)
+** Byte 4--127 : Max 124 bytes of data
+** 5. PostQ
+** All SCSI Command must be sent through postQ:
+** (inbound queue port) Request frame must be 32 bytes aligned
+** #bit27--bit31 => flag for post ccb
+** #bit0--bit26 => real address (bit27--bit31) of post arcmsr_cdb
+** bit31 :
+** 0 : 256 bytes frame
+** 1 : 512 bytes frame
+** bit30 :
+** 0 : normal request
+** 1 : BIOS request
+** bit29 : reserved
+** bit28 : reserved
+** bit27 : reserved
+** ---------------------------------------------------------------------------
+** (outbount queue port) Request reply
+** #bit27--bit31
+** => flag for reply
+** #bit0--bit26
+** => real address (bit27--bit31) of reply arcmsr_cdb
+** bit31 : must be 0 (for this type of reply)
+** bit30 : reserved for BIOS handshake
+** bit29 : reserved
+** bit28 :
+** 0 : no error, ignore AdapStatus/DevStatus/SenseData
+** 1 : Error, error code in AdapStatus/DevStatus/SenseData
+** bit27 : reserved
+** 6. BIOS request
+** All BIOS request is the same with request from PostQ
+** Except :
+** Request frame is sent from configuration space
+** offset: 0x78 : Request Frame (bit30 == 1)
+** offset: 0x18 : writeonly to generate
+** IRQ to IOP331
+** Completion of request:
+** (bit30 == 0, bit28==err flag)
+** 7. Definition of SGL entry (structure)
+** 8. Message1 Out - Diag Status Code (????)
+** 9. Message0 message code :
+** 0x00 : NOP
+** 0x01 : Get Config
+** ->offset 0xa00 :for outbound message code message_rwbuffer
+** (IOP331 send to driver)
+** Signature 0x87974060(4)
+** Request len 0x00000200(4)
+** numbers of queue 0x00000100(4)
+** SDRAM Size 0x00000100(4)-->256 MB
+** IDE Channels 0x00000008(4)
+** vendor 40 bytes char
+** model 8 bytes char
+** FirmVer 16 bytes char
+** Device Map 16 bytes char
+** FirmwareVersion DWORD <== Added for checking of
+** new firmware capability
+** 0x02 : Set Config
+** ->offset 0xa00 :for inbound message code message_rwbuffer
+** (driver send to IOP331)
+** Signature 0x87974063(4)
+** UPPER32 of Request Frame (4)-->Driver Only
+** 0x03 : Reset (Abort all queued Command)
+** 0x04 : Stop Background Activity
+** 0x05 : Flush Cache
+** 0x06 : Start Background Activity
+** (re-start if background is halted)
+** 0x07 : Check If Host Command Pending
+** (Novell May Need This Function)
+** 0x08 : Set controller time
+** ->offset 0xa00 : for inbound message code message_rwbuffer
+** (driver to IOP331)
+** byte 0 : 0xaa <-- signature
+** byte 1 : 0x55 <-- signature
+** byte 2 : year (04)
+** byte 3 : month (1..12)
+** byte 4 : date (1..31)
+** byte 5 : hour (0..23)
+** byte 6 : minute (0..59)
+** byte 7 : second (0..59)
+*******************************************************************************
+*******************************************************************************
+** RS-232 Interface for Areca Raid Controller
+** The low level command interface is exclusive with VT100 terminal
+** --------------------------------------------------------------------
+** 1. Sequence of command execution
+** --------------------------------------------------------------------
+** (A) Header : 3 bytes sequence (0x5E, 0x01, 0x61)
+** (B) Command block : variable length of data including length,
+** command code, data and checksum byte
+** (C) Return data : variable length of data
+** --------------------------------------------------------------------
+** 2. Command block
+** --------------------------------------------------------------------
+** (A) 1st byte : command block length (low byte)
+** (B) 2nd byte : command block length (high byte)
+** note ..command block length shouldn't > 2040 bytes,
+** length excludes these two bytes
+** (C) 3rd byte : command code
+** (D) 4th and following bytes : variable length data bytes
+** depends on command code
+** (E) last byte : checksum byte (sum of 1st byte until last data byte)
+** --------------------------------------------------------------------
+** 3. Command code and associated data
+** --------------------------------------------------------------------
+** The following are command code defined in raid controller Command
+** code 0x10--0x1? are used for system level management,
+** no password checking is needed and should be implemented in separate
+** well controlled utility and not for end user access.
+** Command code 0x20--0x?? always check the password,
+** password must be entered to enable these command.
+** enum
+** {
+** GUI_SET_SERIAL=0x10,
+** GUI_SET_VENDOR,
+** GUI_SET_MODEL,
+** GUI_IDENTIFY,
+** GUI_CHECK_PASSWORD,
+** GUI_LOGOUT,
+** GUI_HTTP,
+** GUI_SET_ETHERNET_ADDR,
+** GUI_SET_LOGO,
+** GUI_POLL_EVENT,
+** GUI_GET_EVENT,
+** GUI_GET_HW_MONITOR,
+** // GUI_QUICK_CREATE=0x20, (function removed)
+** GUI_GET_INFO_R=0x20,
+** GUI_GET_INFO_V,
+** GUI_GET_INFO_P,
+** GUI_GET_INFO_S,
+** GUI_CLEAR_EVENT,
+** GUI_MUTE_BEEPER=0x30,
+** GUI_BEEPER_SETTING,
+** GUI_SET_PASSWORD,
+** GUI_HOST_INTERFACE_MODE,
+** GUI_REBUILD_PRIORITY,
+** GUI_MAX_ATA_MODE,
+** GUI_RESET_CONTROLLER,
+** GUI_COM_PORT_SETTING,
+** GUI_NO_OPERATION,
+** GUI_DHCP_IP,
+** GUI_CREATE_PASS_THROUGH=0x40,
+** GUI_MODIFY_PASS_THROUGH,
+** GUI_DELETE_PASS_THROUGH,
+** GUI_IDENTIFY_DEVICE,
+** GUI_CREATE_RAIDSET=0x50,
+** GUI_DELETE_RAIDSET,
+** GUI_EXPAND_RAIDSET,
+** GUI_ACTIVATE_RAIDSET,
+** GUI_CREATE_HOT_SPARE,
+** GUI_DELETE_HOT_SPARE,
+** GUI_CREATE_VOLUME=0x60,
+** GUI_MODIFY_VOLUME,
+** GUI_DELETE_VOLUME,
+** GUI_START_CHECK_VOLUME,
+** GUI_STOP_CHECK_VOLUME
+** };
+** Command description :
+** GUI_SET_SERIAL : Set the controller serial#
+** byte 0,1 : length
+** byte 2 : command code 0x10
+** byte 3 : password length (should be 0x0f)
+** byte 4-0x13 : should be "ArEcATecHnoLogY"
+** byte 0x14--0x23 : Serial number string (must be 16 bytes)
+** GUI_SET_VENDOR : Set vendor string for the controller
+** byte 0,1 : length
+** byte 2 : command code 0x11
+** byte 3 : password length (should be 0x08)
+** byte 4-0x13 : should be "ArEcAvAr"
+** byte 0x14--0x3B : vendor string (must be 40 bytes)
+** GUI_SET_MODEL : Set the model name of the controller
+** byte 0,1 : length
+** byte 2 : command code 0x12
+** byte 3 : password length (should be 0x08)
+** byte 4-0x13 : should be "ArEcAvAr"
+** byte 0x14--0x1B : model string (must be 8 bytes)
+** GUI_IDENTIFY : Identify device
+** byte 0,1 : length
+** byte 2 : command code 0x13
+** return "Areca RAID Subsystem "
+** GUI_CHECK_PASSWORD : Verify password
+** byte 0,1 : length
+** byte 2 : command code 0x14
+** byte 3 : password length
+** byte 4-0x?? : user password to be checked
+** GUI_LOGOUT : Logout GUI (force password checking on next command)
+** byte 0,1 : length
+** byte 2 : command code 0x15
+** GUI_HTTP : HTTP interface (reserved for Http proxy service)(0x16)
+**
+** GUI_SET_ETHERNET_ADDR : Set the ethernet MAC address
+** byte 0,1 : length
+** byte 2 : command code 0x17
+** byte 3 : password length (should be 0x08)
+** byte 4-0x13 : should be "ArEcAvAr"
+** byte 0x14--0x19 : Ethernet MAC address (must be 6 bytes)
+** GUI_SET_LOGO : Set logo in HTTP
+** byte 0,1 : length
+** byte 2 : command code 0x18
+** byte 3 : Page# (0/1/2/3) (0xff --> clear OEM logo)
+** byte 4/5/6/7 : 0x55/0xaa/0xa5/0x5a
+** byte 8 : TITLE.JPG data (each page must be 2000 bytes)
+** note page0 1st 2 byte must be
+** actual length of the JPG file
+** GUI_POLL_EVENT : Poll If Event Log Changed
+** byte 0,1 : length
+** byte 2 : command code 0x19
+** GUI_GET_EVENT : Read Event
+** byte 0,1 : length
+** byte 2 : command code 0x1a
+** byte 3 : Event Page (0:1st page/1/2/3:last page)
+** GUI_GET_HW_MONITOR : Get HW monitor data
+** byte 0,1 : length
+** byte 2 : command code 0x1b
+** byte 3 : # of FANs(example 2)
+** byte 4 : # of Voltage sensor(example 3)
+** byte 5 : # of temperature sensor(example 2)
+** byte 6 : # of power
+** byte 7/8 : Fan#0 (RPM)
+** byte 9/10 : Fan#1
+** byte 11/12 : Voltage#0 original value in *1000
+** byte 13/14 : Voltage#0 value
+** byte 15/16 : Voltage#1 org
+** byte 17/18 : Voltage#1
+** byte 19/20 : Voltage#2 org
+** byte 21/22 : Voltage#2
+** byte 23 : Temp#0
+** byte 24 : Temp#1
+** byte 25 : Power indicator (bit0 : power#0,
+** bit1 : power#1)
+** byte 26 : UPS indicator
+** GUI_QUICK_CREATE : Quick create raid/volume set
+** byte 0,1 : length
+** byte 2 : command code 0x20
+** byte 3/4/5/6 : raw capacity
+** byte 7 : raid level
+** byte 8 : stripe size
+** byte 9 : spare
+** byte 10/11/12/13: device mask (the devices to create raid/volume)
+** This function is removed, application like
+** to implement quick create function
+** need to use GUI_CREATE_RAIDSET and GUI_CREATE_VOLUMESET function.
+** GUI_GET_INFO_R : Get Raid Set Information
+** byte 0,1 : length
+** byte 2 : command code 0x20
+** byte 3 : raidset#
+** typedef struct sGUI_RAIDSET
+** {
+** BYTE grsRaidSetName[16];
+** DWORD grsCapacity;
+** DWORD grsCapacityX;
+** DWORD grsFailMask;
+** BYTE grsDevArray[32];
+** BYTE grsMemberDevices;
+** BYTE grsNewMemberDevices;
+** BYTE grsRaidState;
+** BYTE grsVolumes;
+** BYTE grsVolumeList[16];
+** BYTE grsRes1;
+** BYTE grsRes2;
+** BYTE grsRes3;
+** BYTE grsFreeSegments;
+** DWORD grsRawStripes[8];
+** DWORD grsRes4;
+** DWORD grsRes5; // Total to 128 bytes
+** DWORD grsRes6; // Total to 128 bytes
+** } sGUI_RAIDSET, *pGUI_RAIDSET;
+** GUI_GET_INFO_V : Get Volume Set Information
+** byte 0,1 : length
+** byte 2 : command code 0x21
+** byte 3 : volumeset#
+** typedef struct sGUI_VOLUMESET
+** {
+** BYTE gvsVolumeName[16]; // 16
+** DWORD gvsCapacity;
+** DWORD gvsCapacityX;
+** DWORD gvsFailMask;
+** DWORD gvsStripeSize;
+** DWORD gvsNewFailMask;
+** DWORD gvsNewStripeSize;
+** DWORD gvsVolumeStatus;
+** DWORD gvsProgress; // 32
+** sSCSI_ATTR gvsScsi;
+** BYTE gvsMemberDisks;
+** BYTE gvsRaidLevel; // 8
+** BYTE gvsNewMemberDisks;
+** BYTE gvsNewRaidLevel;
+** BYTE gvsRaidSetNumber;
+** BYTE gvsRes0; // 4
+** BYTE gvsRes1[4]; // 64 bytes
+** } sGUI_VOLUMESET, *pGUI_VOLUMESET;
+** GUI_GET_INFO_P : Get Physical Drive Information
+** byte 0,1 : length
+** byte 2 : command code 0x22
+** byte 3 : drive # (from 0 to max-channels - 1)
+** typedef struct sGUI_PHY_DRV
+** {
+** BYTE gpdModelName[40];
+** BYTE gpdSerialNumber[20];
+** BYTE gpdFirmRev[8];
+** DWORD gpdCapacity;
+** DWORD gpdCapacityX; // Reserved for expansion
+** BYTE gpdDeviceState;
+** BYTE gpdPioMode;
+** BYTE gpdCurrentUdmaMode;
+** BYTE gpdUdmaMode;
+** BYTE gpdDriveSelect;
+** BYTE gpdRaidNumber; // 0xff if not belongs to a raid set
+** sSCSI_ATTR gpdScsi;
+** BYTE gpdReserved[40]; // Total to 128 bytes
+** } sGUI_PHY_DRV, *pGUI_PHY_DRV;
+** GUI_GET_INFO_S : Get System Information
+** byte 0,1 : length
+** byte 2 : command code 0x23
+** typedef struct sCOM_ATTR
+** {
+** BYTE comBaudRate;
+** BYTE comDataBits;
+** BYTE comStopBits;
+** BYTE comParity;
+** BYTE comFlowControl;
+** } sCOM_ATTR, *pCOM_ATTR;
+** typedef struct sSYSTEM_INFO
+** {
+** BYTE gsiVendorName[40];
+** BYTE gsiSerialNumber[16];
+** BYTE gsiFirmVersion[16];
+** BYTE gsiBootVersion[16];
+** BYTE gsiMbVersion[16];
+** BYTE gsiModelName[8];
+** BYTE gsiLocalIp[4];
+** BYTE gsiCurrentIp[4];
+** DWORD gsiTimeTick;
+** DWORD gsiCpuSpeed;
+** DWORD gsiICache;
+** DWORD gsiDCache;
+** DWORD gsiScache;
+** DWORD gsiMemorySize;
+** DWORD gsiMemorySpeed;
+** DWORD gsiEvents;
+** BYTE gsiMacAddress[6];
+** BYTE gsiDhcp;
+** BYTE gsiBeeper;
+** BYTE gsiChannelUsage;
+** BYTE gsiMaxAtaMode;
+** BYTE gsiSdramEcc; // 1:if ECC enabled
+** BYTE gsiRebuildPriority;
+** sCOM_ATTR gsiComA; // 5 bytes
+** sCOM_ATTR gsiComB; // 5 bytes
+** BYTE gsiIdeChannels;
+** BYTE gsiScsiHostChannels;
+** BYTE gsiIdeHostChannels;
+** BYTE gsiMaxVolumeSet;
+** BYTE gsiMaxRaidSet;
+** BYTE gsiEtherPort; // 1:if ether net port supported
+** BYTE gsiRaid6Engine; // 1:Raid6 engine supported
+** BYTE gsiRes[75];
+** } sSYSTEM_INFO, *pSYSTEM_INFO;
+** GUI_CLEAR_EVENT : Clear System Event
+** byte 0,1 : length
+** byte 2 : command code 0x24
+** GUI_MUTE_BEEPER : Mute current beeper
+** byte 0,1 : length
+** byte 2 : command code 0x30
+** GUI_BEEPER_SETTING : Disable beeper
+** byte 0,1 : length
+** byte 2 : command code 0x31
+** byte 3 : 0->disable, 1->enable
+** GUI_SET_PASSWORD : Change password
+** byte 0,1 : length
+** byte 2 : command code 0x32
+** byte 3 : pass word length ( must <= 15 )
+** byte 4 : password (must be alpha-numerical)
+** GUI_HOST_INTERFACE_MODE : Set host interface mode
+** byte 0,1 : length
+** byte 2 : command code 0x33
+** byte 3 : 0->Independent, 1->cluster
+** GUI_REBUILD_PRIORITY : Set rebuild priority
+** byte 0,1 : length
+** byte 2 : command code 0x34
+** byte 3 : 0/1/2/3 (low->high)
+** GUI_MAX_ATA_MODE : Set maximum ATA mode to be used
+** byte 0,1 : length
+** byte 2 : command code 0x35
+** byte 3 : 0/1/2/3 (133/100/66/33)
+** GUI_RESET_CONTROLLER : Reset Controller
+** byte 0,1 : length
+** byte 2 : command code 0x36
+** *Response with VT100 screen (discard it)
+** GUI_COM_PORT_SETTING : COM port setting
+** byte 0,1 : length
+** byte 2 : command code 0x37
+** byte 3 : 0->COMA (term port),
+** 1->COMB (debug port)
+** byte 4 : 0/1/2/3/4/5/6/7
+** (1200/2400/4800/9600/19200/38400/57600/115200)
+** byte 5 : data bit
+** (0:7 bit, 1:8 bit : must be 8 bit)
+** byte 6 : stop bit (0:1, 1:2 stop bits)
+** byte 7 : parity (0:none, 1:off, 2:even)
+** byte 8 : flow control
+** (0:none, 1:xon/xoff, 2:hardware => must use none)
+** GUI_NO_OPERATION : No operation
+** byte 0,1 : length
+** byte 2 : command code 0x38
+** GUI_DHCP_IP : Set DHCP option and local IP address
+** byte 0,1 : length
+** byte 2 : command code 0x39
+** byte 3 : 0:dhcp disabled, 1:dhcp enabled
+** byte 4/5/6/7 : IP address
+** GUI_CREATE_PASS_THROUGH : Create pass through disk
+** byte 0,1 : length
+** byte 2 : command code 0x40
+** byte 3 : device #
+** byte 4 : scsi channel (0/1)
+** byte 5 : scsi id (0-->15)
+** byte 6 : scsi lun (0-->7)
+** byte 7 : tagged queue (1 : enabled)
+** byte 8 : cache mode (1 : enabled)
+** byte 9 : max speed (0/1/2/3/4,
+** async/20/40/80/160 for scsi)
+** (0/1/2/3/4, 33/66/100/133/150 for ide )
+** GUI_MODIFY_PASS_THROUGH : Modify pass through disk
+** byte 0,1 : length
+** byte 2 : command code 0x41
+** byte 3 : device #
+** byte 4 : scsi channel (0/1)
+** byte 5 : scsi id (0-->15)
+** byte 6 : scsi lun (0-->7)
+** byte 7 : tagged queue (1 : enabled)
+** byte 8 : cache mode (1 : enabled)
+** byte 9 : max speed (0/1/2/3/4,
+** async/20/40/80/160 for scsi)
+** (0/1/2/3/4, 33/66/100/133/150 for ide )
+** GUI_DELETE_PASS_THROUGH : Delete pass through disk
+** byte 0,1 : length
+** byte 2 : command code 0x42
+** byte 3 : device# to be deleted
+** GUI_IDENTIFY_DEVICE : Identify Device
+** byte 0,1 : length
+** byte 2 : command code 0x43
+** byte 3 : Flash Method
+** (0:flash selected, 1:flash not selected)
+** byte 4/5/6/7 : IDE device mask to be flashed
+** note .... no response data available
+** GUI_CREATE_RAIDSET : Create Raid Set
+** byte 0,1 : length
+** byte 2 : command code 0x50
+** byte 3/4/5/6 : device mask
+** byte 7-22 : raidset name (if byte 7 == 0:use default)
+** GUI_DELETE_RAIDSET : Delete Raid Set
+** byte 0,1 : length
+** byte 2 : command code 0x51
+** byte 3 : raidset#
+** GUI_EXPAND_RAIDSET : Expand Raid Set
+** byte 0,1 : length
+** byte 2 : command code 0x52
+** byte 3 : raidset#
+** byte 4/5/6/7 : device mask for expansion
+** byte 8/9/10 : (8:0 no change, 1 change, 0xff:terminate,
+** 9:new raid level,
+** 10:new stripe size
+** 0/1/2/3/4/5->4/8/16/32/64/128K )
+** byte 11/12/13 : repeat for each volume in the raidset
+** GUI_ACTIVATE_RAIDSET : Activate incomplete raid set
+** byte 0,1 : length
+** byte 2 : command code 0x53
+** byte 3 : raidset#
+** GUI_CREATE_HOT_SPARE : Create hot spare disk
+** byte 0,1 : length
+** byte 2 : command code 0x54
+** byte 3/4/5/6 : device mask for hot spare creation
+** GUI_DELETE_HOT_SPARE : Delete hot spare disk
+** byte 0,1 : length
+** byte 2 : command code 0x55
+** byte 3/4/5/6 : device mask for hot spare deletion
+** GUI_CREATE_VOLUME : Create volume set
+** byte 0,1 : length
+** byte 2 : command code 0x60
+** byte 3 : raidset#
+** byte 4-19 : volume set name
+** (if byte4 == 0, use default)
+** byte 20-27 : volume capacity (blocks)
+** byte 28 : raid level
+** byte 29 : stripe size
+** (0/1/2/3/4/5->4/8/16/32/64/128K)
+** byte 30 : channel
+** byte 31 : ID
+** byte 32 : LUN
+** byte 33 : 1 enable tag
+** byte 34 : 1 enable cache
+** byte 35 : speed
+** (0/1/2/3/4->async/20/40/80/160 for scsi)
+** (0/1/2/3/4->33/66/100/133/150 for IDE )
+** byte 36 : 1 to select quick init
+**
+** GUI_MODIFY_VOLUME : Modify volume Set
+** byte 0,1 : length
+** byte 2 : command code 0x61
+** byte 3 : volumeset#
+** byte 4-19 : new volume set name
+** (if byte4 == 0, not change)
+** byte 20-27 : new volume capacity (reserved)
+** byte 28 : new raid level
+** byte 29 : new stripe size
+** (0/1/2/3/4/5->4/8/16/32/64/128K)
+** byte 30 : new channel
+** byte 31 : new ID
+** byte 32 : new LUN
+** byte 33 : 1 enable tag
+** byte 34 : 1 enable cache
+** byte 35 : speed
+** (0/1/2/3/4->async/20/40/80/160 for scsi)
+** (0/1/2/3/4->33/66/100/133/150 for IDE )
+** GUI_DELETE_VOLUME : Delete volume set
+** byte 0,1 : length
+** byte 2 : command code 0x62
+** byte 3 : volumeset#
+** GUI_START_CHECK_VOLUME : Start volume consistency check
+** byte 0,1 : length
+** byte 2 : command code 0x63
+** byte 3 : volumeset#
+** GUI_STOP_CHECK_VOLUME : Stop volume consistency check
+** byte 0,1 : length
+** byte 2 : command code 0x64
+** ---------------------------------------------------------------------
+** 4. Returned data
+** ---------------------------------------------------------------------
+** (A) Header : 3 bytes sequence (0x5E, 0x01, 0x61)
+** (B) Length : 2 bytes
+** (low byte 1st, excludes length and checksum byte)
+** (C) status or data :
+** <1> If length == 1 ==> 1 byte status code
+** #define GUI_OK 0x41
+** #define GUI_RAIDSET_NOT_NORMAL 0x42
+** #define GUI_VOLUMESET_NOT_NORMAL 0x43
+** #define GUI_NO_RAIDSET 0x44
+** #define GUI_NO_VOLUMESET 0x45
+** #define GUI_NO_PHYSICAL_DRIVE 0x46
+** #define GUI_PARAMETER_ERROR 0x47
+** #define GUI_UNSUPPORTED_COMMAND 0x48
+** #define GUI_DISK_CONFIG_CHANGED 0x49
+** #define GUI_INVALID_PASSWORD 0x4a
+** #define GUI_NO_DISK_SPACE 0x4b
+** #define GUI_CHECKSUM_ERROR 0x4c
+** #define GUI_PASSWORD_REQUIRED 0x4d
+** <2> If length > 1 ==>
+** data block returned from controller
+** and the contents depends on the command code
+** (E) Checksum : checksum of length and status or data byte
+**************************************************************************
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