Links para documentos da Intel sobre o processador Pentium IV
Intel® 64 and IA-32 Architectures Software Developer's Manual Volume 1: Basic Architecture
Intel® 64 and IA-32 Architectures Software Developer's Manual Volume 2A: Instruction Set Reference, A-M
Intel® 64 and IA-32 Architectures Software Developer's Manual Volume 2B: Instruction Set Reference, N-Z
Intel® 64 and IA-32 Architectures Software Developer's Manual Volume 3A: System Programming Guide, Part 1
Intel® 64 and IA-32 Architectures Software Developer's Manual Volume 3B: System Programming Guide, Part 2
No caso dos links acima falharem, experimentar este
Link para manual do NASM
NASM