I just got myself an HP 200LX and it's pretty nostalgic. I've installed a bunch of DOS development tools on it. I have a 256MB compact flash card which is 10x larger than the harddrive in my first PC.
I have other palmtops and PDAs but the DOS based ones are special because they run the same software as full sized PCs. This is unlike Windows CE devices (I have HP 660LX) and Palm devices (I have an m105) that have to have software specifically written for them.
Even the Atari Portfolio -- which is only superficially PC compatible -- can at least be developed for using the same tools you'd use for a full-sized DOS PC.
I have other palmtops and PDAs but the DOS based ones are special because they run the same software as full sized PCs. This is unlike Windows CE devices (I have HP 660LX) and Palm devices (I have an m105) that have to have software specifically written for them.
Even the Atari Portfolio -- which is only superficially PC compatible -- can at least be developed for using the same tools you'd use for a full-sized DOS PC.