Heathkit H-89 / Zenith Z-89 Programs

Programs for the Heathkit H-89 / Zenith Z-89 computer.

A site Search will turn up additional references to the H89 throughout the site in text documents and project notes.

Hobbies, Games, Amusement

BIKECALC.BAS

Bicycle gearing calculations.

 

PINGDEMO.BAS

A rudimentary ball and paddle graphics game for the Heathkit H19 terminal or compatible (including the H100).

 

PADDLE.BAS

Bounce a moving dot against top of screen. Demonstrates the cursor positioning commands of the Heathkit H-19 terminal.

 

MBROT.BAS

Calculate escape times for a Mandelbrot fractal design at the screen resolution used by the Heathkit H-100. (The H89 cannot display the design it calculates because it has no pixel graphics capabilities.)

 

H89MORSE.BAS

Translates the contents of a disk file to Morse code strings that are sent to a Hayes Smartmodem 300 modem. The modem plays the Morse code to you through its local speaker.

 

ENCODE.BAS

Encodes a given string into several different Morse-related codes.

 

Modem program utilities

HDOSTRF.BAS

Sends an HDOS file out through the H-89 serial port. Crude but effective for rescuing orphaned HDOS (Heath Disk Operating System) files.

 

MAPDOWN.BAS

Strips the parity bit from all bytes in a file, so all characters are true ASCII 0-127. Useful for modem sessions that were captured to a text buffer.

 

FASTEDIT.BAS

Quickly select the lines you want to save from a disk file created by a modem program's capture buffer routine.

 

Hardware Experiments

ALARM.BAS

A series of programs that used the H89 as a crude burglar alarm and home monitoring system.

 

Math, Bookkeeping, Accounting

SUM.BAS

Quickly sum a column of numbers using the numeric keypad.

 

PHONTALY.BAS

Enter the line items from your phone bill. Tabulates the total charges to each phone number and displays by client number which of your clients (or roommates, etc.) to bill for those charges.

 

GRAPH.BAS

Graph the values from one data file against the values from another.

 

FILEMAKE.BAS

Create a data file containing ordered pairs, or break apart an ordered pair file into separate files, one for each variable. For managing data files to use with the GRAPH program.

 

CHEKBOOK.BAS

Enter check and deposit amounts from your checkbook to get your new balance.

 

CKLEDGER.BAS

A simple mini-ledger. Enter checks and their expense categories to calculate category totals.

 

COMPARE.BAS

Bookkeeping aid to find discrepancies in two sets of numbers that are supposed to be identical but aren't.

 

MATRIX.BAS

Sum the rows and columns of a two dimensional matrix of numbers.

 

MOVAVG.BAS

Calculate the N-item moving average for a series of numbers.

 

NUMDAYS.BAS

Calculate number of days between two dates.

 

Miscellaneous Utilities

LINE2LON.BAS

Check an MBASIC file stored in ASCII format for lines longer than 127 characters, which the Microsoft MBASIC compiler will reject.

 

RENAME.BAS

Rename any file on your disk from within MBASIC, even if the file has a name that is illegal under CP/M.

 

EPSON.BAS

Sends codes to change Epson MX-80 printer modes.

 

Other Heathkit / Zenith H-89 / Z-89 sites

Herb Johnson's Retrotechnology website

Following the Digital Research Incorporated (DRI) link on this page will take you to quite a few links to CP/M related websites and archives.

 

Google Group for CP/M computer systems

The Google Groups interface to the comp.os.cpm public Usenet discussion group.