Bill Feero wrote:
> It will be 'embedded' - running on a 512Meg Compact Flash (so I can 
> include the man pages and other documentation)
> 
> The processor is an AMD Elan SC520 - an single chip with a 486/North/South bridge.
> There will be no video, no usb, but there is PCMCIA and 100base-T network.
> The console device is a serial port.
> 
> The hardware platform won't change for 1 to 2 years. The PCMCIA be the only
> variable, but I can add modules as needed. Stability and timely security patches
> are needed for the distribution. SL has both of those. 
> 
> The third-parties I was mentioning are companies such as MontaVista, Green Hills,
> or lynuxworks. They have good products, especially if your processor is not x86
> based. 


Those look like commercial embedded distributions. Here is a list of free ones:

http://www.linuxdevices.com/articles/AT4525882120.html