Quoting David Worrall : > > In the meantime this works ?. sort of? s little bit?not really? > but I?m not sure what the role of the field currently occupied by > p2 in ires system opcode actually performs The first argument is a trigger; especially at k-rate you probably do not want the system call to go on every cycle. It is in system_i as it is the same code really ==John ff