How to extract INTEL BIOS BIN file?

[maxim]

Here is a Intel D102GGC2 Motherboard, The download is a EXE file, after extract is, I got a *.BIO file, 1.36M, but the chip PM49FL004T, should be 512K.
As the board BIOS is collapsed, the flashing program no way can be run under windows. How can I get the 512k binary file?