Aqui dejo una explicacion como se configura el archivo DEF del J**** :

Paramethers for receiver described in file:
IRD Defintions
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IRD Definitions indicate how j**** should identify the device and various default settings. For each IRD there are a fixed set of parameters. If one is missing, then an error will occur. Each of the parameters are comma seperated and must be on a single line The following is the definition for the 2700.
IRD, 1, "2700", 1, 1, 1, 1, 2, 2, 0x7FFFFFC0, 0x7FFFFFC4, 0x7FFFFFA0, 0x7FFFFFA8, 0x7FFEFFC4, 0x7FFEFFC7, "10G", 1, 1
Where:
IRD - indicates the line is an IRD definition
1 - is an index number used for referencing other components (ie flash chips), must be unique, sequential numbering
"2700" - name of IRD, used to represent in various fields
1 - micro definition cross reference (see above)
1 - JTAG IO connections
1 - x7/8/9xx series IRDs, has BS1 and IRD Reset (also used for generic)
2 - 3100/301 IRD (LSi microprocessor)
3 - 5100/501 IRD, has BS1 and IRD Reset
4 - 6000 IRD
1 - IRD manufacturer
1 - for E* mfg
2 - for Dir3ctTV
1 - JTAG device
1 - for JTAG and STiXX00 (STi based micro)
2 - for EJTAG and LSI SC2000
2 - Data width in bytes (typically 2, being 16 bits)
2 - Data delta in bytes
0x7FFFFFC0 - Absolute memory address of IRD number
0x7FFFFFC4 - Absolute memory address of Box ****
0x7FFFFFA0 - Absolute memory address of Boot Strap
0x7FFFFFA8 - Absolute memory address of Build Config
0x7FFEFFC4 - Absolute memory address of Model ID
0x7FFEFFC7 - Absolute memory address of Software Version
"10G" - Model ID (assists in identifying IRD)
1 - EEPROM Type
0 - None
1 - 24LC16
2 - 24C32
3 - 24C64
4 - 24C65
5 - 24C128
1 - EEPROM Interface to microprocessor
0 - None
1 - STI micros using Pio1:7,2,0 for Enable, SCL, SDA
2 - STi micros using Pio2:6, Pio3:2,0 for Enable, SCL, SDA
3 - LSI based DP301
4 - STI micros using Pio1:2,0 for SCL, SDA


IRD Flash Defintions
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IRD Flash definitions provide j**** with the default flash chip(s) for a previously defined IRD. There can be multiple flash chips per IRD definition. The following is a flash definition for the above defined 2700:
IRDFlash, 1, "Flash 1(29F400)", 0x2223, 0x7FF80000, 0x80000, 2, 2, 0


Where:
IRDFlash - Indicates the line is an IRD definition
1 - References the IRD definition, in this case the 2700 defined above (must be previously defined)
"Flash 1(29F400)" - Name of the flash
0x2223 - Flash ID
0x7FF80000 - Absolute memory starting address
0x80000 - Size in bytes
2 - Data Width of flash in bytes
2 - Data Delta of flash in bytes
0 - Data Offset of flash in bytes