/ C library -- stty / error = stty(filep, ttyvec); / filep is descriptor of open tty / ttyvec[0, 1, 2] correspond to args of stty .globl _stty .data _stty: 1f .text 1: mov 2(sp),r0 mov 4(sp),0f sys stty; 0:.. bes 1f clr r0 rts pc 1: mov $1,r0 rts pc