Someone was kind enough to notify me that my book has been pirated. That's not nice! I'm not sure how to respond to this. I've notified Wiley and they'll take care of this.
I know there are few folks who believe that such books should be free because they're based on Open Source. But they have to realize that that won't encourage folks to write books. These books are not so much about the Open Source Software as the author's solutions. It takes talented editors and a lot of other folks to get a book written (this does not include getting it printed). Don't believe me? Take a look at the average documentation for any Open Source project (or close source for that matter).
Now on to happier thoughts. I ordered an ARM SBC from Technologic Systems. I found them in Circuit Cellar Magazine (it's one of the first places I look for electronics). The TS-7200 has 32M of Ram, 16M of flash, CF Flash 2 serial (RS485 half duplex, an option), 2 USB 2.0 ports, 10/100 Ethernet, PC104 16 bit bus and 20 IO bits. I may get the DAC (12 bit x 8 channels) but I also orders a real time clock and an on-board temperature probe (both options). This matches the functionality of the original HCS II SC (Z-180, RS232 console, RS485 half duplex comm. port, 16 in/8 out digital I/O, 8 channel - 8 bit DAC). I'm happy with this setup so far. I do wonder if more ram would be a good idea. The TS-7200 can take up to 64M of ram. I'll have to remove the 32M chip and replace it with a 64M chip.
There is some discussion as to whether this setup is embedded. It does use dynamic ram and an OS but I feel that this combination buys me a flexible, already written package that I can expand. I managed to get the Linux running by simply plugging it in (LAN, console and power). I know Linux well enough that it took me a few minutes to configure the board for my setup.