Revision 0 6 November 2000
overview continuation of system call #6 - get here with a valid tcb; if thread not already active, this code activates it
on entry s2 target tcb base t8 pointer to high end of caller's tcb
| 62-64 | if thread already active goto l71, else activate thread (l65-l70) |
| 65-67 | initialize timeslice and remaining timeslice from caller's timeslice |
| 68,69 |
initialize priority and current priority from caller's priority |