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The x86 instruction set refers to the set of instructions that x86-compatible microprocessors support. The instructions are usually part of an executable program, often stored as a computer file and executed on the processor. The x86 instruction set has been extended several times, introducing wider registers and datatypes as well as new ...
Copy entire directory trees. Xcopy is a version of the copy command that can move files and directories from one location to another. XCOPY usage and attributes can be obtained by typing XCOPY /? in the DOS Command line. The command is available in MS-DOS versions 3.2 and later. [1]
To be backwards compatible with the 8.3 limitations of the old File Allocation Table filenames, the names 'Program Files', 'Program Files (x86)' and 'Common Program Files' are shortened by the system to progra~N and common~N, where N is a digit, a sequence number that on a clean install will be 1 (or 1 and 2 when both 'Program Files' and ...
\Program Files (x86) Appears on 64-bit editions of Windows. 32-bit and 16-bit programs are by default installed in this folder, even though 16-bit programs do not run on 64-bit Windows. [3] \ProgramData (hidden) Contains program data that is expected to be accessed by computer programs regardless of the user account in the context of which they ...
COMMAND.COM: This is the command interpreter. User configuration files: AUTOEXEC.BAT: This is run by the default shell (usually COMMAND.COM) to execute commands at startup. CONFIG.SYS: This contains statements to configure DOS and load device drivers. Standard DOS utility programs: APPEND: Set a search path for data files.
In most computer file systems, every directory has an entry (usually named ".") which points to the directory itself.In most DOS and UNIX command shells, as well as in the Microsoft Windows command line interpreters cmd.exe and Windows PowerShell, the working directory can be changed by using the CD or CHDIR commands.
Read from bank 1 of the register file (includes visible and invisible CPU registers) RARF2: 0F 3D: Read from bank 2 of the register file RARF3: 0F 3E: Read from bank 3 of the register file LTLB: 0F F0: Load TLB with page table entry RCT: 0F F1: Read cache tag WCT: 0F F2: Write cache tag RCD: 0F F3: Read cache data WCD: 0F F4: Write cache data ...
Ralf Brown's Interrupt List (aka RBIL, x86 Interrupt List, MS-DOS Interrupt List or INTER) is a comprehensive list of interrupts, calls, hooks, interfaces, data structures, CMOS settings, memory and port addresses, as well as processor opcodes for x86 machines from the 1981 IBM PC up to 2000 (including many clones), [1] [2] [nb 1] most of it still applying to IBM PC compatibles today.