#------------------------------------------------------------------------------ # $File: xilinx,v 1.8 2017/03/17 21:35:28 christos Exp $ # This is Aaron's attempt at a MAGIC file for Xilinx .bit files. # Xilinx-Magic@RevRagnarok.com # Got the info from FPGA-FAQ 0026 # # Rewritten to use pstring/H instead of hardcoded lengths by O. Freyermuth, # fixes at least reading of bitfiles from Spartan 2, 3, 6. # http://www.fpga-faq.com/FAQ_Pages/0026_Tell_me_about_bit_files.htm # # First there is the sync header and its length 0 beshort 0x0009 >2 belong =0x0ff00ff0 >>&0 belong =0x0ff00ff0 >>>&0 byte =0x00 >>>&1 beshort =0x0001 >>>&3 string a Xilinx BIT data # Next is a Pascal-style string with the NCD name. We want to capture that. >>>>&0 pstring/H x - from %s # And then 'b' >>>>>&1 string b # Then the model / part number: >>>>>>&0 pstring/H x - for %s # Then 'c' >>>>>>>&1 string c # Then the build-date >>>>>>>>&0 pstring/H x - built %s # Then 'd' >>>>>>>>>&1 string d # Then the build-time >>>>>>>>>>&0 pstring/H x \b(%s) # Then 'e' >>>>>>>>>>>&1 string e # And length of data >>>>>>>>>>>>&0 belong x - data length 0x%x # Raw bitstream files 0 long 0xffffffff >&0 belong 0xaa995566 Xilinx RAW bitstream (.BIN)