#------------------------------------------------------------------------------
# $File: xilinx,v 1.9 2021/04/26 15:56:00 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 %#x

# Raw bitstream files
0      long    0xffffffff
>&0    belong  0xaa995566      Xilinx RAW bitstream (.BIN)