Question#3

For me the best assembler is the NASM assembler. It had easy to create programs which uses protected mode routines.
The Netwide Assembler, NASM, is an 80x86 assembler designed for portability and modularity. It supports a range of object file formats, including Linux and Microsoft 16-bit OBJ and Win32. It will also output plain binary files. Its syntax is designed to be simple and easy to understand, similar to Intel's but less complex. It supports Pentium, P6, MMX, SSE and SSE2 opcodes, and has macro capability. NASM is primally an Linux project.

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