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- [ 4. COMMAND.COM Commands]
- GENERAL SOFTWARE EMBEDDED DOS-ROM 6.22 [tm] COMMANDS
- ═════════════════════════════════════════════════════════════════════════
- Embedded DOS-ROM 6.22 actually supports TWO command interpreters. In
- its standard form, it loads COMMAND.COM from the boot device, executing
- it from RAM as other DOSes do. Additionally, Embedded DOS-ROM 6.22 can
- be reconfigured to enable its INTERNAL command interpreter, which runs
- as a part of the DOS kernel, FROM ROM. Finally, while the internal
- command interpreter is limited to save space, with the full-featured
- COMMAND.COM, the DOS supports 60 standard DOS commands.
-
- KEY POINTS:
-
- 1. STANDARD COMMAND INTERPRETER CAN LOAD FROM BOOT DISK
- 2. OPTIONAL COMMAND INTERPRETER BUILT-INTO DOS KERNEL SAVES RAM
- 3. EMBEDDED DOS-ROM 6.22 SUPPORTS STANDARD MS-DOS COMMANDS
-
- STANDARD COMMAND.COM
-
- The standard COMMAND.COM is an MS-DOS compatible COMMAND.COM that
- looks very much like its MS-DOS counterpart. It has the same piping,
- redirection, and DOS commands you're used to on desktop PCs.
-
- By default, Embedded DOS-ROM loads this file from the default boot
- device, which can be a floppy, hard disk, or ROM disk. If you don't
- need a COMMAND.COM interpreter, then you can use SHELL= in CONFIG.SYS
- to cause Embedded DOS-ROM 6.22 to run your program immediately, or you
- can simply name your application program "COMMAND.COM" and cause it
- to run right away as though it were COMMAND.COM.
-
- OPTIONAL BUILT-IN COMMAND.COM
-
- The built-in command interpreter is a "tiny" version of COMMAND.COM
- that runs as a part of the Embedded DOS-ROM 6.22 code segment directly
- from ROM. That is, there is no file to load from a boot device.
- This command interpreter supports most of the commonly-used MS-DOS
- commands such as DIR, TYPE, COPY, RENAME, MD, RD, etc. Command line
- arguments are limited to save ROM space. Commonly, this built-in
- command interpreter is used to either run the application program,
- or run the full-featured COMMAND.COM program, which allows full
- access to the features of its MS-DOS equivalent.
-
- STANDARD USER-LEVEL COMMANDS
-
- The following commands are provided by Embedded DOS-ROM 6.22,
- either as utility programs (FDISK, CHKDSK, etc.) or as internal
- commands in the standard or internal command interpreters:
-
- ask diskcomp label rename
- attrib diskcopy lh rmdir
- break diskview loadhigh set
- call echo md share
- cd era mem shift
- chdir erase mkdir sort
- chkdsk exit mode switch
- cls fdisk more time
- copy find path tree
- ctty for pause truename
- date format prompt type
- del goto rd ver
- delay help reboot verify
- deltree if rem vol
- dir intersvr ren xcopy
-