Table 16-1: BitGen Output Files
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Output File Type
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Output File Description
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.bgn
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Contains log information for the BitGen run, including command line options, errors, and warnings. Always produced.
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.bin
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A binary file that contains only configuration data. The .bin has no header like the .bit file. Produced when –g Binary:Yes is specified.
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.bit
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A binary file that contains proprietary header information as well as configuration data. Meant for input to other Xilinx tools, such as PROMGen and iMPACT. Always produced unless the -j option is specified.
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.drc
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A design rule check (DRC) file for the design. Contains log
information or Design Rules Checker, including errors and warnings. Always produced unless the -d option is specified.
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.isc
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Contains the configuration data in IEEE1532 format. Produced when -g IEEE:1532:Yes is specified.
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.ll
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An ASCIII file that contains information on each of the nodes in the design that can be captured for readback. The file contains the absolute bit position in the readback stream, frame address, frame offset, logic resource used, and name of the component in the design. Produced when the -l option is specified.
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.msd
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An ASCII file that contains only mask information for verification, including pad words and frames. No commands are included. Produced when -g Readback is specified.
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.msk
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A binary file that contains the same configuration commands as a .bit file, but has mask data where the configuration data is. This data should NOT be used to configure the device. If a mask bit is 0, that bit should be verified against the bit stream data. If a mask bit is 1, that bit should not be verified. Produced when the -m option is specified.
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.nky
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An ASCII file that contains key information for Virtex-II devices when encryption is desired. This file is used as an input to iMPACT to program the keys. Produced when -g Encrypt:Yes is specified.
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<outname>_key.isc
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Contains the data for programming the encryption keys in IEEE 1532 format. Produced when -g IEEE 1532:Yes and -g Encrypt:Yes are set.
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.rba
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An ASCII file that contains readback commands, rather than
configuration commands, and expected readback data where the configuration data would normally be.
To produce the .rba file, the –b option must be used when –g Readback is specified.
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.rbb
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The same as the .rba file, but it is a binary file.
Produced when –g Readback is specified.
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.rbd
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An ASCII file that contains only expected readback data, including pad words and frames. No commands are included. Produced when -g Readback is specified.
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.rbt
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An ASCII version of the bit file. Produced when the -b option is specified.
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