Everything HP200LX: Knowledge, Products, Service

9 years, 100's of pages of HP Palmtop Paper, jammed with tips, reviews and how-to's

Most useful, up-to-date Web sites devoted to the HP 200LX

Direct link into 1000's of pieces of Palmtop software

Tips from Our Techs

2008 Catalog
(PDF, 2.6 MB)

Contact Us/About Us

Weekly Palmtop Paper Newsletter
(Palmtop tips, latest happenings, and HP Palmtop Paper Store information)



Privacy Policy

Accessing the Hardware and Firmware

Accessing the Hardware and Firmware

Swift!BASIC lets the experienced programmer extend the language by making calls to the operating system of the computer. The SYSTEM() command in Swift!BASIC is very well implemented and easy to use. The downside to this is that you need to know exactly what you're doing. A good book on MS-DOS internal functions (interrupts) will help get you started. It will take some trial and error, and several system crashes, before you get the hang of this feature.

In addition to DOS, the HP 95LX has another operating environment: SYSMGR. Swift!BASIC handles calls to this operating environment as adroitly as it handles calls to DOS and the BIOS. However, the same admonition applies; you've got to know exactly what you're doing. You must also have the HP Independent System Developers' Manual to incorporate such features as "clipboard" and "menu" in your programs. (See sidebar, page 43 of the Fall 91 issue for more information.)

For really experienced BASIC programmers, there's nothing like the thrill of POKE-ing hex numbers into memory. This is the way to get the computer to "sing and dance" (or crash and burn quickly). Swift!- BASIC provides this capability as well. It is one of the more dangerous capabilities of any BASIC interpreter and should only be used if you've backed up everything in sight.

iPhone Life magazine

Notice about Palmtop.net
The Palmtop Network with its S.U.P.E.R. (Simply Unbeatable Palmtop Essentials Repository) software is now available under the domain name of hp200lx.net.  

We Buy
We buy used palmtops, working or broken: HP 200LX, HP 100LX and 1000CX.

Copyright 2010 Thaddeus Computing Inc