Table of Contents
Advertisement
Chapter 2
Command Setup and
Execution Under CP 1M
-86
This chapter discusses the operation of the Console Command Processor, the
format of transient programs, CP/M-86 memory models, and memory image
formats.
CCP BUILT-IN AND TRANSIENT COMMANDS
The operation of the CP/M-86 Console Command Processor (CCP) is similar to
that of CP/M-80's CCP. At initial cold start, it prints the CP/M sign-on message,
automatically logs in Drive A, and issues the standard prompt at the console.
CP /M-86 then waits for input command lines from the console.
The command line may include one of the built-in commands: DIR, ERA, REN,
TYPE, or USER. (Note that SAVE is not supported under CP/M-86 since the
equivalent function is performed by DDT-86.) See the CPIM-86 User's Guide for
the APC for more information about these programs.
The command line may also begin with the name of a transient program with the
assumed file type CMD, denoting a commandfile. The CMD file type differentiates
transient command files used under CP/M-86 from COM files, which operate
under CP /M-80.
The CCP allows multiple programs to reside in memory, providing facilities for
background tasks. A transient program may load additional programs for execu-
tion under its own control.
2-1
Advertisement
Table of Contents
