I have an idea for a protection system but I need to include an assembler in my program. Ideally I would like the C source code for an assembler for the 386 family which I could then chop and change to fit it into my program.

It must generate machine code directly from the assembly language text input, not use external files (dlls etc.) and not require a linker (since all code will be in one file).

I have previously found a Linux version but this was not suitable since it has to run on Windows.

Regards
IcyDee

you can try Olly sources from OllyDbg at
http://home.t-online.de/home/Ollydbg/srcdescr.htm

hope it helps
TBD

Have you checked into NASM source code (netwide assembler project). Its written in C. There is also source for a disassembler.

http://sourceforge.net/projects/nasm

Cheers,
Clandestiny