Header ------ 13 bytes... 00 09 0f f0 0f f0 0f f0 0f f0 00 00 01 Fields ------ type 1 byte length 2 byte (big endian, 4 bytes for FPGA data) data Field Types ----------- 'a' filename ("xform.ncd") 'b' part name (v1000efg860") 'c' date ("2001/08/10") 'd' time ("06:55:04") 'e' FPGA data (0xffffffff aa995566 ...) See Also -------- http://www.fpga-faq.com/FAQ_Pages/0026_Tell_me_about_bit_files.htm