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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.
 

 

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Copyright ©2007 Steven Whitney. Last modified 09/25/2007.