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The high memory area (HMA) is the RAM area consisting of the first 64 KiB, minus 16 bytes, of the extended memory on an IBM PC/AT or compatible microcomputer. Originally, the logic gate was a gate connected to the Intel 8042 keyboard controller. Controlling it was a relatively slow process.
In DOS memory management, the high memory area (HMA) is the RAM area consisting of the first 65520 bytes above the one megabyte in an IBM AT or compatible computer. In real mode , the segmentation architecture of the Intel 8086 and subsequent processors identifies memory locations with a 16-bit segment and a 16-bit offset, which is resolved ...
On Windows CE .NET 4.2, [3] Windows CE 5.0 [4] and Windows Embedded CE 6.0 [5] it is referred to as the Command Processor Shell. Its implementations differ between operating systems, but the behavior and basic set of commands are consistent.
Extended memory is located above 1 MB, includes the high memory area, and ends at 16 MB on the Intel 286 and at 4 GB on the Intel 386DX and later.. In DOS memory management, extended memory refers to memory above the first megabyte (2 20 bytes) of address space in an IBM PC or compatible with an 80286 or later processor.
The command is available in MS-DOS versions 5 thru Windows XP. Full-screen command help is available in MS-DOS versions 6 and later. [1] Beginning with Windows XP, the command processor "DOS" offers builtin-help for commands by using /? (e.g. COPY /?)
In computing, LOADHIGH (abbreviated LH) is an internal DOS command in COMMAND.COM that is used to load a program into the upper memory area (UMA) instead of conventional memory. [1] The command was introduced with MS-DOS 5.0 / PC DOS 5.0 in 1991, [2] [1] copying the built-in HILOAD command earlier introduced with DR DOS 5.0 in 1990.
4NT was first released as 4DOS for Windows NT (versions 1.x, 2.x), but became 4NT until the restructure after version 8. The program is a recompilation of 4OS2, and continues to have features of OS/2's command processor (cmd.exe), such as running REXX scripts, and EXTPROC support.
The directives in this file configure DOS for use with devices and applications in the system. The CONFIG.SYS directives also set up the memory managers in the system. After processing the CONFIG.SYS file, DOS proceeds to load and execute the command shell specified in the SHELL line of CONFIG.SYS, or COMMAND.COM if there is no