The Dos Commands; Resident And Nonresident Commands; Typing The Dos Commands - Tandy 1200 HD User Manual

2.8 THE DOS COMMANDS
RESIDENT AND NONRESIDENT COMMANDS
Although vast amounts of information can be stored on magnetic
disks, the amount of information that a computer's random access
memory (RAM) can hold at any given time is relatively limited. In
order
to
leave this memory space open for your files, only the most
often used DOS programs are put into the computer's random access
memory when DOS is initially loaded. These programs are referred
to as resident commands. The programs for nonresident commands
are transferred from disk to random access memory only after you
have entered the command statement. This means that, if you do not
have the DOS programs on fixed disk, you must have the DOS diskette
installed in the diskette drive at the time you enter a command state-
ment for any of the nonresident commands.
The resident DOS commands are:
BREAK PATH
CHDIR (CD) PROMPT
CLS
COPY
DATE
RENAME (REN)
RMDIR (RD)
TIME
DEL (DELETE) TYPE
DIR (DIRECTORY) VER (VERSION)
ERASE VERIFY
MKDIR (MD) VOL (VOLUME)
TYPING THE DOS COMMANDS
Throughout this manual, when you are told to type in a command
statement, you will be shown the statement in lowercase letters. If
you so choose, however, you can type in the command statements
using uppercase letters, lowercase letters, or mixed-case letters. Oth-
erwise, you must type in the command exactly as it is shown.
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