hpcalc.org - HP 28 Archive

HP 28 Utilities

The first size listed is the downloaded file size and the second size listed is the size on the calculator.

There are 29 files totaling 169KB in this category.

ARC   (details) 28 ENG   12KB/1KB
An HP 28S file compression/archival system. Easily compresses objects by 50%.
By Robert Peraino. 1998/07/31

Beep   (details) 28 ENG   1KB/1KB
Simple program to turn the sound on and off.
By Pandy Holmberg. 1998/07/31

Calendar   (details) 28 ENG   2KB/1KB
Scrollable calendar/clock program.
By Strauss Erez. 1998/07/31

Checksum   (details) 28 ENG   2KB/1KB
Another checksum calculator.
By Friedrich Schroeder. 1998/07/31

CHK   (details) 28 ENG   1KB/1KB
Checksum calculator.
By Robert Peraino. 1998/07/31

Clock   (details) 28 ENG   3KB/1KB
Day/time clock.
By Eric Stuyvesant. 1998/07/31

Clock   (details) 28 ENG   4KB/2KB
Clock and calendar program.
By James Gentles. 1998/07/31

Clock/Calendar   (details) 28 ENG   5KB/4KB
Clock and calendar program.
By Stephen A. Luse. 1998/07/31

Composer   (details) 28 ENG   2KB/2KB
Allows you to compose music.
By Dave Still. 1998/07/31

Crypt   (details) 28 ENG   2KB/1KB
Encrypts and decrypts strings.
By Johan Olsson. 1998/07/31

DHC (Double Height Characters)   (details) 28 ENG   3KB/1KB
This program modifies the 28C display driver settings that the bottom two lines are shown in double height.
By Christoph Gießelink. 2006/08/28

Directory Alphabetizer   (details) 28 ENG   1KB/1KB
Orders any directory in ascending alphabetical order.
By John Gorton. 1998/07/31

EVAL TIMER 2004-08-08   (details) 49/50 48 28 ENG   5KB/1KB
Timed evaluation of object, returning results in both ticks and seconds. Two programs (one for the 48 and 49 series, and the other for the 28 series) are provided as User RPL source code within the text file. These work correctly with any wordsize, and compensate for the time used by the program. Minor modification to match the individual calculator is required.
By James M. Prange. 2004/08/19

Fast   (details) 28 ENG   2KB/1KB
Speeds up the HP 28.
By Fredrik Norrman. 1998/07/31

Fast 2   (details) 28 ENG   1KB/1KB
Creates FAST with some SYSEVALs.
Author unknown. 1998/07/31

Flag Pack   (details) 28 ENG   2KB/1KB
Allows one to name flags.
By Christian Wettergren. 1998/07/31

Framstags' Utilities   (details) 28 ENG   3KB/1KB
A set of utilities for loading objects from your RAM disk, copying objects to your RAM disk, copying objects from your current directory to another directory, replacing objects from your current directory to another directory, showing the size of objects in bytes, replacing a substring with another substring in an object, and inserting a program into another program.
By Ulli Horlacher. 1998/07/31

Fuel Gauge   (details) 28 ENG   3KB/1KB
"Fuel gauge" showing remaining battery power with a 1 or 0.
By Robert Peraino. 1998/07/31

HP Toolkit   (details) 28 ENG   15KB/1+KB
Contents of one person's HP 28, with many useful utilities.
By James Gentles. 1998/07/31

Input   (details) 28 ENG   2KB/1KB
Program for interactive input.
By Ulli Horlacher. 1998/07/31

List 2.1   (details) 28 ENG   8KB/5KB
General list handler.
By B. Fahller. 1998/07/31

Off with ID   (details) 28 ENG   1KB/1KB
Turns the HP 28 off and shows an identification screen upon powerup.
Author unknown. 1998/07/31

Pack/Unpack   (details) 28 ENG   2KB/1KB
Makes it easy to move files around the HP 28 directory structure.
By Craig Lien. 1998/07/31

Recalling Directories   (details) 28 ENG   1KB/1KB
Recalls a directory object onto the stack.
By Alonzo Gariepy. 1998/07/31

RJ IINPUT 1.0   (details) 49/50 48 28 ENG FRA   74KB/1KB
ScreenshotVery interesting routine in RPL to key integer numbers without interrupting your program. I saw lot of requests in the newsgroup concerning such a function. Included is a small game to test RJ IINPUT (as Integer Input).
By Rémi Janelle. 2004/05/09

Service Call   (details) 28 ENG   1KB/1KB
Makes commonly needed functions handy.
By Jan Christiaan van Winkel. 1998/07/31

Song   (details) 28 ENG   4KB/1+KB
An extremely simple music maker program that plays music based on a sequence of frequencies and durations for the beeps. Includes a few sample songs.
By Gerard Pinzone. 2017/08/08

Speed   (details) 28 ENG   1KB/1KB
Allows you to select the 28's speed on a scale of 1 to 15, with 7 being the default.
Author unknown. 1998/07/31

Using the HP28S as a Remote Control   (details) 28 ENG   6KB/1+KB
Routines to use the 28S as a remote control.
By Michiel Niemeijer and Eric Toonen. 1998/07/31

Part of the HP Calculator Archive,
Copyright 1997-2017 Eric Rechlin.