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    MS-DOS

    • LS Software’s EGAD Screen Print is now available for free download.
    • Form Fill-R and Source Code. Runs on both H/Z-100 and PC compatibles.
    • Z-UTIL H/Z-100 utilities including rudimentary emulator for IBM PC BIOS, enabling a few very early programs to run.

    Heathkit 8-bit

    These drivers for the HDOS and CP/M operating systems may be used on H/Z-89/90 and H/Z-100 computers. Source code is included, with object / executables where applicable. These drivers are good examples of how very small, efficient code can be incredibly powerful.

    HDOS/CPM/MS-DOS/Z-DOS

    • PC89LINK v 2.01. Miscellaneous bits, HDOS and CP/M source code in C, missing .ABS and .COM files but with .EXE’s for MS-DOS and Z-DOS.

    Ultimate Driver

    • Runs the printer with standard [serial or parallel] cable, no special wiring or soldering, just set the switches.
    • Controls all printer functions from any text file or your keyboard.
    • Special code for long lines, overstrike, underlining, super and subscripts.
    • HDOS SET options displayed with the HELP command.
    • HDOS version has LP0: -> LPr: programmable initialization sequences.
    • Assembly switches for serial and parallel interfaces: H/Z-89, H8-4, H8-5 serial; FBE, TRUDATA, H8-2 parallel; or add your own.
    • Full source code included; change as desired.
    • Full documentation included on disk.
    • HDOS, CP/M 2.2.02 ,CP/M 2.2.03 versions.
    • [Originally] $20.00 postpaid.

    UPC (Universal Printer Character) Driver

    • Easy to use 8×10 character generator to design your own set of 128 characters.
    • Normal and inverse printing of all characters.
    • H/Z-19 character set supplied. You can start with this set and generate any language or special graphics you desire in the 8×10 matrix.
    • All characters can be printed from keyboard or text file.
    • Supports ESC p, q, F, and G; not ESC Y.
    • Produces 60 or 120 characters, 480/960 dots, per line.
    • Excellent for forms and special effects.
    • [Originally] $25.00 postpaid. HDOS, CP/M versions.

    HDOS

    CP/M

    Other Heathkit Resources

    • The Semi-Virtual Disk — a project you can buy or build yourself, that plugs into a standard floppy socket… to your computer it looks just like a floppy disk, but all the data is stored in RAM onboard!  So then you can plug the same device into another computer of an entirely different variety and read/write the data.  I haven’t tested one but it sounds pretty amazing.