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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 every serious HP48 owner 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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