The HP48
Goodies Page

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The Example Programs
in Donnelly’s Gray Book

Jim Donnelly (HP48 design team member) wrote a book in 1995 entitled  An Introduction to HP 48 System RPL and Assembly Language Programming , popularly known among HP48 and HP49 hackers as “The Gray Book” because the cover is gray and the real title is too long to remember. Jim has graciously given his permission for all of the example programs in the book to be made freely available on the Web. They are all in one ZIP file, along with all of the batch files and meta files you’ll need if you’re using a PC-based assembler. Please note: only the source code of the example programs is here, not the assembled binary files, except for the PONG game, which is included.

Click  here  to download the complete 87K zipfile. These example programs are explained in great detail in the book, so get a copy if you are interested in learning System RPL and/or Saturn Assembly Language. Click on the book’s title above to buy it from Amazon.com.

HP48 Goodies Disk Project

The “Goodies Disk Project” made sense when the only medium for HP48 software exchange was the HP BBS (often described as “frustrating and expensive”). As access to the comp.sys.handhelds newsgroup (and later comp.sys.hp48) became cheaper and easier than access to HP’s BBS, the need for a disk-based archive of HP48 goodies declined. Nowadays practically everybody has Web access, and Eric Rechlin’s  HP48 Archive  web site is so well maintained that the Goodies Disk Project is unnecessary. Even HP finally removed the Goodies Disks from their website.

It was fun, but to tell the truth, browsing the Web and Eric’s HP48 Archive is even more fun!  -jkh-

NOTE: The contents of all eleven HP48 Goodies Disks can be downloaded from  Eric Rechlin’s HP48 Archive site .

Dedicated to All
HP48 Enthusiasts

It’s genetic. My uncle  Henry Horn  was editor of HP’s Key Notes magazine before I even knew that HP existed.

Remember PPC? Enjoy a  flashback  to some of its most memorable articles.

Check out the  Flags and Anthems  of the countries where the greatest HP48 enthusiasts live!

HP48 Links

There are so many other HP48 websites all interlinked that adding another pageful of links would be redundantly redundant. Here are a couple that’ll get you started.

 Eric Rechlin’s HP28/38/48/49 Archive , the #1 site for downloading HP goodies!

Many enthusiasts’ sites can be found on the “HP48 Web Ring”.

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