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- ;
- SAPZ.COM
-
- Size (recs) CRC Version Author/Latest Issue Disk
- 2k (16) C3BF 1.2 Howard Goldstein 10/91 Z3COM12
-
- 1- Syntax 2- Erasing Files 3- Datestamps 4- Relog 5- Config 6- Notes
-
- SAP-Z is a ZCPR3 utility that sorts and packs a disk directory. It reads
- the disk directory tracks, sorts them alphabetically, erases the tracks with
- E5's, and then rewrites them. Sorting the directory in this manner offers
- several advantages: (1) it allows DIR to show an alphabetized listing; (2)
- it minimizes problems when using UNERASE; (3) it speeds up access by directory
- programs; (4) it assists on working directly on the disk with disk utilities
- such as DU; (5) it prevents somebody else from reading files you erased; and
- (6) it optionally erases all null (zero-length) files, except disk labels
- starting with a special tag character.
-
- Original (10/6/90) by Gene Pizzetta. Based on SAP60 (7/27/87) by Irv Hoff,
- original by L. E. Hughes (1977).
- :1
- Syntax SAPZ dir:
-
- Either a DU or a DIR specification must be used; for safety, the default DU
- is not assumed. Only the drive is significant, but if only a user specifica-
- tion is given, the default drive is selected. If run in a non-ZCPR3 environ-
- ment, only a drive letter followed by a colon should be specified.
-
- If no drive specification is given, a brief usage message is displayed.
- WHAT IT DOES
-
- SAP-Z is a program developed through the years to clean up the disk direc-
- tory tracks of a CP/M disk. It works equally well on tiny floppy drives or
- gigantic hard drives with a capacity in excess of 100 megabytes. The direc-
- tory is checked to see how many files it contains and memory is checked to see
- if it is sufficient. (At 32 bytes per filename more than 1500 filenames can
- be easily handled with a 50k TPA, and most users have more TPA than that.)
-
- The filenames are read into memory from the directory tracks, then the
- entire directory track area is cleaned off using E5h characters. The file-
- names are sorted using the same fast sort routine in current versions of Super
- Directory (SD), and then writes them back to the directory in alphabetic
- order.
-
- SAP-Z can do strange things if there are garbaged entries on the directory
- tracks, so it's best to use a program like CHKDIR first and make any necessary
- corrections before running SAP-Z.
- :2
- ERASING FILES
-
- SAP-Z erases files with a filetype of "$$$" and, optionally, erases null
- ("zero-length") files (see "Configuration", below).
-
- Many people use names on their user areas to identify that directory or
- disk labels for cataloging with FATCAT, MCAT, or NCAT. These are usually null
- (zero-length) files:
-
- -UPLOADS 0k ; for RCP/M directory identification
- #GAMES .123 0k ; for catalog programs
-
- You obviously don't want these files erased by SAP-Z, so ZCNFG can be used to
- configure SAP-Z to keep all null files, erase all null files, or erase all
- null files except those beginning with your label tag character (see "Config-
- uration", below).
- :3
- DATE STAMPED FILES
-
- SAP-Z preserves DateStamper file date stamps. These routines were added by
- Bridger Mitchell of Plu*Perfect Systems. After the directory is sorted and
- written back to the directory tracks, the !!!TIME&.DAT file is sorted and
- rewritten also, so all date stamps are kept in the right order.
- :4
- RELOGGING
-
- SAP-Z no longer requires calling RELOG or DISKRST to reset hard disks.
- This is done using function 37 in a manner that is safe even under DRI's BDOS.
- :5
- CONFIGURATION - 1/2
-
- SAP-Z can be used without alteration on any size floppy or hard drive. It
- is intended only for a CP/M 2.2 compatible BIOS. The program will abort with
- a message if it run under Z3PLUS.
-
- Two configuration options are available and may be set using ZCNFG and the
- SAPZnn.CFG file. Do not change the name of the CFG file. The name ensures
- that ZCNFG will be able to find the correct configuration file even if the
- name of SAP-Z is changed.
-
- The first configuration option determines whether null files will be
- erased. By default null files are left alone. A "YES" (non-zero value) here
- allows them to be erased.
- CONFIGURATION - 2/2
-
- The second configuration option has no effect unless the first option
- (above) is set to "YES". The option sets the tag character. The tag charac-
- ter is the first character of disk labels, such as those used by cataloging
- programs. This character is usually "-" (2Dh), "#" (23h), or "!" (21h). If
- this option is configured to a non-zero value, disk labels beginning with that
- value will not be erased, even if Option 1 is "YES". If you don''t want disk'
- labels preserved, make this option null (00h).
- :6
- SAPZ Notes - 1/2
-
- a. Vs 1.2 updates (9/27/91, Howard Goldstein):
- - Converted to Zilog mnemonics.
- - Enlarged stack to eliminate strange behavior reported by various
- users.
- - Eliminated ZCPR3 requirement.
- - Fixed treatment of S2 byte for compatibility with ZSDOS' larger file
- capacity.
- - Shortened and cleaned up code.
- - Simplified RELOG routine and moved initial disk reset to before disk
- select.
-
- b. Vs 1.1 updates (10/13/90, Gene Pizzetta):
- - Added relogging. Under CP/M and ZRDOS all drives are relogged using
- both functions 37 and 13. Under ZSDOS and ZDDOS only the specific
- drive is relogged using function 37.
- SAPZ Notes - 2/2
-
- c. Vs 1.0 updates (10/06/90, Gene Pizzetta):
- - Based on SAP v60. For ZCPR3 only.
- - Now requires drive spec, or gives usage message.
- - Accepts DU or DIR form, but only drive is significant.
- - Now uses Z80 opcodes, including relative jumps.
- - Changed from absolute to relocatable code, and added version 4 library
- routines.
- - Made configurable with ZCNFG.