• In computing, an opcode (abbreviated from operation code, also known as instruction machine code, instruction code, instruction syllable, instruction parcel...
    14 KB (1,135 words) - 05:12, 16 April 2024
  • An opcode table (also called an opcode matrix) is a visual representation of all opcodes in an instruction set. It is arranged such that each axis of...
    3 KB (111 words) - 11:31, 18 November 2023
  • Thumbnail for Machine code
    assembly, numerical opcodes and operands are replaced with mnemonics and labels. For example, the x86 architecture has available the 0x90 opcode; it is represented...
    30 KB (3,349 words) - 21:50, 7 October 2024
  • Thumbnail for Illegal opcode
    An illegal opcode, also called an unimplemented operation, unintended opcode or undocumented instruction, is an instruction to a CPU that is not mentioned...
    10 KB (941 words) - 18:43, 24 September 2024
  • Opcode Systems, Inc. was founded in 1985 by Dave Oppenheim and based in and around Palo Alto, California, USA. Opcode produced MIDI sequencing software...
    10 KB (936 words) - 01:49, 29 June 2024
  • SIGTRAP. The opcode for INT3 is 0xCC, as opposed to the opcode for INT immediate8, which is 0xCD immediate8. Since the dedicated 0xCC opcode has some desired...
    4 KB (472 words) - 05:21, 26 August 2024
  • Thumbnail for Assembly language
    uses a mnemonic to represent, e.g., each low-level machine instruction or opcode, each directive, typically also each architectural register, flag, etc....
    89 KB (9,894 words) - 04:00, 1 October 2024
  • instructions. On the processing architecture, a given instruction may specify: opcode (the instruction to be performed) e.g. add, copy, test any explicit operands:...
    35 KB (4,286 words) - 12:39, 23 September 2024
  • PREFETCHW, opcode 0F 0D /0 as well as opcodes 0F 0D /2../7 are all documented to be performing prefetch. On Intel processors with PREFETCHW, these opcodes are...
    218 KB (12,793 words) - 19:54, 7 October 2024
  • Metasploit (redirect from Opcode Database)
    against a remote target machine. Other important sub-projects include the Opcode Database, shellcode archive and related research. The Metasploit Project...
    17 KB (1,566 words) - 01:32, 6 September 2024