Z-System Libraries

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Many (if not most) programs written for the ZCPR3.x-based systems, ZSDOS, the B/P Bios, and more used pre-assembled libraries of routines originated by Richard Conn. The basic SYSLIB was augmented with Z3LIB for the ZCPR3 Command Processor Replacement, and VLIB which added generic terminal support to applications.

I picked up maintenance for these libraries and their associated Help files in the late 1980s. From that time until the last updates, all routines were optimized for Z80s, and a fourth library, DSLIB, was added to support generic file date stamping. The last updates were made in December 1993 and are available here:

      LBRHL45A.LBR - Help files for "The Libraries" Vers 4.5A. 

      LIBS45A.LBR - SYSLIB, Z3LIB, VLIB, DSLIB Vers 4.5A in MS REL and SLR REL formats. 

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When the Z-System Libraries were being actively developed, I wrote a small demonstration program to use the primative character-based windowing features in Version 4 of VLIB as a shell instead of command line interaction. At that time, two versions were produced; one using the multiple command line of ZCPR3, the other using the shell stack. Both versions were combined in 1997 with an assembly option dictating which mechanism is used. This library contains the source, executable and documentation. It is hereby released into the public domain...

      PDMSHELL.LBR - Pull-Down Menu Shell demo program for Z-Systems