Hello,

This patch adds: - a probe to verify the existence of the 91c111 chip prior to attempting to init registers. This allows the code to live in systems where the chip is not present or disabled. Prior to this a "tftp" or "dhcp" would hang if attempted when the chip was not there, now it just returns immediately. The system I use has a plug in ether debug board, so this probe is useful and allows having a single image around.

- a mac address set function outside of smc_open. This proves useful when boot happens with out the chip being touched but the kernel wants etherent. The current Linux kernel drivers assume the MAC address is good so having it set here saves messing around with the kernel driver.

- all signed characters are now unsigned. A previous patch was issued with out changing all references. This gets them all.

Regards,

Richard W.