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-
- CCP+ is a CP/M Plus CCP replacement. It is a result of
- dissasembling the CCP supplied with CP/M Version 3.0 and
- modifying the resultant source code for use in an RCP/M system.
- Because most of the code is copyright by Digital Research, only
- registered users of CP/M Plus may use this CCP replacement.
-
- This CCP includes the following changes:
-
- 1. All built-in commands have been removed. None are needed
- since Digital Research supplies the equivalent transient
- commands with CP/M 3. The user number is changed by
- entering u: at the system prompt, where u is the new user
- number.
-
- 2. It is not necessary for .COM and .SUB files to have the SYS
- attribute to be accessable from other user areas. The CCP
- searches user 0 (if the current user number is non-zero)
- after the current user number is searched for each drive in
- the command search path.
-
- 3. Commands of the form du:command or ud:command or u:command
- are allowed.
-
- 4. The display of the user/drive in the system prompt has been
- reversed to be consistent with ZCPR.
-
- 5. If the command or submit file to be executed is password
- protected and the correct password is not supplied or the
- default password does not match, a "Password:" prompt
- appears and the user is given one chance to enter the
- correct password.
-
- 6. The time (in the format [HH:MM]) is displayed at the system
- prompt. This can optionally be turned off. Also, for RCP/M
- systems, the caller's connect time instead of the current
- time can optionally be displayed at the system prompt.
-
- 7. The CCP checks for the presence of a BYE RSX, and if BYE is
- active, stop/start scroll support is turned off. All RCPM
- listing utilities monitor ^S input, so the BDOS should not
- monitor console input during console output in an RCPM
- system. The CCP uses function 60 (RSX function 4) to test
- for BYE active. My version of BYE returns 0 in register A.
- If this function reaches the BDOS, 0FFH is returned.
- Checking for BYE active can optionally be turned off.
-
- 8. The CCP uses offset +9 in the System Control Block to pass
- the user number of the file to load in conjunction with
- function 59. The value passed is user number+1, with 0 =
- current user number. The Loader resets this value to
- 0. Transient programs can set SCB+9 to load files
- from different user numbers.
-
- 9. If a .COM or .SUB file cannot be found, the message "command
- not found" is displayed.
-
- 10. Named directories are implemented (similar to ZCPR). If
- directory names were loaded via SETDIR, the name of the
- drive/user is displayed. The CCP also calls any active LBR
- RSX's to display their Library names. The display of
- directory names can be turned on or off by using the DIRNAME
- utility. The directory name file (ROOT.DIR) can be created
- using your favorite editor. Use the sample supplied for
- syntax. The CCP supports password protected directories.
- To log into a named directory, simply enter its name as a
- command with an optional password, and if it is password
- protected, and the correct password was not supplied, a
- password will be prompted.
-
- 11. Full support of the ZCPR wheel byte is implemented including
- MAXDRIVE, MAXUSER, and WHEEL. If the wheel byte is set,
- access is allowed to any named directory without regard to
- password protection or the settings of max drive and user.
- If the wheel byte is zero, access is denied to out-of-bounds
- drive and user areas as determined by MAXDRIVE and MAXUSER.
- To log into an out-of-bounds area when the wheel byte is
- zero, you must enter the name of the target directory, then
- if it is password protected, supply the correct password.
- If this is successfull, the MAXDRIVE and MAXUSER locations
- are modified to reflect the extended access.
-
- 12. A Cmdrun facility similar to the ZCPR LRUN command, which
- executes commands from a library has been implemented.
- CMDRUN can load any CP/M+ command file from COMMAND.LBR
- including .COM, .SUB and .PRL files. CMDRUN is invoked
- automatically if the CCP cannot find the required command,
- and CMDRUN in turn, searches for COMMAND.LBR using the drive
- search chain, and follows the filetype search order as set
- by SETDEF for selecting members once COMMAND.LBR has been
- found. Note that the cmdrun facility can be optionally
- selected.
-
-
- The following options can be selected by using setting them
- to YES in the file CCPHDR.MAC:
-
- YESLBR EQU NO
-
- Yes, to allow library command processor to be loaded and run
- if the command cannot be found.
-
- WHLLBR EQU NO
-
- Yes, to check Wheel byte before running library command
- processor. No effect unless YESLBR is YES. If yes, the library
- command processor will only be run if the wheel byte is 0FFH.
-
- EXPAND EQU NO
-
- Yes, to expand the users universe if the Wheel byte is zero
- and the user enters the name of an out of bounds directory and is
- successfully taken there. This will cause the MAXDRV and MAXUSER
- bytes to be updated to the expanded access.
-
- BYECHK EQU NO
-
- Yes, to check for presence of BYE, and if BYE is active, to
- disable flow-control checking (XON/XOFF). For this to be
- effective, BYE509 or newer must be present and CCPPLUS set to YES
- in BYE.
-
- NOXOFF EQU NO
-
- Yes, to always disable flow-control (XON/XOFF). Should be
- left NO, except with an older version of BYE. If set yes, then
- there is no way to pause output from most non-RCPM utilities.
-
- TIME EQU NO
-
- Yes, to display current time at the system prompt in the
- form [HH:MM]. But see TIMEON below.
-
- TIMEON EQU NO
-
- Yes, to display caller's connect time instead of current
- time at the system prompt. Both TIME and TIMEON must be set yes.
- Only effective with BYE509 or newer. Reverts to display current
- time if BYE is not active.
-
- YESPRL EQU NO
-
- Yes, to allow loading of MP/M PRL (page relocatable) files.
- Leave this NO unless you have MP/M specific programs.
-
- You can use SID or EDFILE to modify the following locations
- in CCP.COM:
-
- 3E0H: FCB for locating and loading the library command
- processor as follows:
-
- 3E0H: User number+1. 0 = use default user number.
-
- 3E1H: Drive code+1. 0 = use drive search chain.
-
- 3E2H: File name (must be exactly 11 bytes). The current
- file name is 'CMDRUN COM' (CMDRUN.COM).
-
-
- I have been using the CCP in the Meadowlark RCPM for over 3
- years. It offers ZCPR-like capabilities which most callers are
- used to, and also allows the Sysop and privaleged users to easily
- use password protected commands.
-
- If you make use of CCP+, and have any comments or
- suggestions, call the above RCPM at 403-435-6579 @ 300/1200 baud,
- or voice at 403-437-2591.
-
- Jul 14, 1986
- Jim Lopushinsky
- Edmonton, Alberta, Canada