Emacs for VHDL editing

[mans]

hello,
   I am new in Emacs. I am trying to use emacs for VHDL editing.
I downloaded Emacs _emacsw32 and installed it on my windows computer.

When I open a VHDL file with emacs, it shows ^M at the end of each line and 
the beatify  doesn't work properly but when I manually delete ^M from the 
ends of file, it is working properly.
What is this ^M and how I can beatify VHDL codes when there is ^M at the end 
of lines?

Regards