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- November 06 1985
- Version 1.03
-
- Many thanks to Stuart Rose for his modifications to CCP+, most of
- which are included in version 1.03 (some slightly modified).
-
- -Jim Lopushinsky
-
- -------------------------------------------
- November 04 1985
-
- This "B" release of the version 1.02 CCP CP/M+ replacement both
- fixes a couple of bugs related to drive/user validation, and
- allows a more customizable CCP at assembly time with the additon
- of several equates.
-
- Bugs:
-
- The DRVSPEC routine had a bug in which a partial drive/user parse
- would return with the correct flags set, but it would also set either
- the user byte or drive byte of the command FCB to a no-zero value,
- indicating a successful parse later on. This has been fixed.
-
- The CCP was also a little sloppy in checking for a valid drive/user
- when requesting a COMfile, SUBfile, or PRLfile to be run. This
- allowed unprotected executable programs in protected directories to
- be run by non-privileged users. If a drive/user spec is given, it
- is now always checked against MAXDRV and MAXUSR (unless, of course,
- if the WHEEL byte is set).
-
- New Equates and Flag Options:
-
- All new equates live in CCPHDR.MAC for easy configuration at assembly
- time. As a result the accompanying version must be used for a successful
- assembly of the new CCP source:
-
- Flags Mnemonics:
- The "flags" byte was originally set using a decimal (or hexadecimal) value.
- To make things a little less cryptic, all bits of the flag byte are given
- mnemonics:
-
- time = 01H - display time in CCP prompt
- byechk = 02H - check for a BYE RSX
- noxoff = 04H - disable flow control XON/XOFF (^Q/^S)
- yesprl = 08H - allow PRLfiles
- yeslbr = 10H - allow a library command processor
- whllbr = 20H - test WHEEL byte before invoking CMDRUN
- expand = 40H - expand user's "universe"
-
- Under original conditions, the "flags" byte was set as:
-
- flags db time + byechk + yeslbr + expand
-
- EXPAND:
- If the user, through the WHEEL byte, or directory names enters a user-area
- outside those boundaries specified by MAXDRV and MAXUSR, then these new
- values are normally written back to MAXDRV and MAXUSR. This effectively
- expands the "universe" for the current user. By removing this option from
- the flag byte, these new "expanded" values for the maximum drive and user are
- NOT written back into the MAXDRV and MAXUSR bytes. If you prefer the original
- CCP configuration, include this option with the flag byte.
-
- WHLLBR:
- If the "yeslbr" bit is set in the "flags" bytes, then a library command
- processor is invoked if the current command cannot be located. If this
- option is included, then the library command processor will only be
- invoked if the WHEEL byte is set to 0FFH (super-user). If you prefer
- the original configuration, remove this option from the flag byte. Note that
- this option has no affect if the "yeslbr" bit is not set.
-
- MAXDRV, WHEEL, and MAXUSR bootup values:
- CCP102 was sent out with MAXDRV = 15, WHEEL = 0FFH, and MAXUSR = 16. If
- you wished different values you had to locate the appropriate place in
- in CCP102 source and change. They may now be set in the header source:
-
- mydrv = 'n' + drvoff - sets your maximum drive to "n:"
- mywhl = n - sets your initial wheel byte value to n
- myusr = n + usroff - sets your maximum user to n
-
- Note: It should not be necessary to modify the initial ZCPR values, as
- I cannot think of a reason why the system needs help from the CCP in
- restricting drive/user access during a Cold start. These values should
- be set by a utility included in PROFILE.SUB for non-remote access or
- by the BYE program for remote access. -JEL
-
- Many thanks to Jim Lopushinsky for the original CCP source and support
- programs. An added mention to Jim Dunn of the Sparrow RPC/M+ for his
- comments and suggestions.
-
- Stuart Rose
- Mississauga RCP/M+ System
- Mississauga, Ontario
- (416)-624-4935 300/1200 baud
-
- ----------------------------------------------
- Edited and incorporated into version 1.03:
-
- Jim Lopushinsky
- Meadowlark RCP/M
- Edmonton, Alberta
- 403-435-6579 300/1200 baud