Ditto - I've recently done some embedded stuff to run on a pair of 100MHz cpu (fabricated out fpga 'gates') which gave me 197 clock cycles for the 'worst case' processing of a byte of hdlc rx and tx (including the bit-stuffing etc). A program to parse the gcc .s output and count the cycles was invaluable!
..and here i was thinking that 20Mhz Z80 was blistering speed compared to 2-6Mhz. :>
Al. -- -- Al Boyanich adb -w -P "world> " -k /dev/meta/galaxy/ksyms /dev/god/brain