For text emulation, there are selections to specify window background and foreground colors, font size, cursor size and the size of the window in rows and columns. The Etherminal manual contains detailed information on how to configure your Etherminal. The hardware reference manual covers BIOS setup. However, you shouldn't need to modify any of the BIOS parameters from their defaults. In the course of my evaluation, I did find a few problems with the Etherminal.
Flash memory is much slower than most hard drives.
Netscape Communicator took over 60 seconds to load. A dialog box did appear after launching Netscape, to reassure you it was starting up. Closing and reopening Netscape got that time down to under five seconds, showing that it had been cached in memory. Another point that isn't as obvious is that the flash memory driver used for the Linux kernel on the Etherminal isn't released under the GPL and is statically linked with the kernel. However, Igel was the original author of the wrapper to link the M-Systems driver with the kernel, and Igel has released the portion they wrote.