Returns the virtual address (SPTR) of a process's process control block (PCB).
pcb (pin)
pcb:sptr (pin:u16)
The process identification number (PIN) for which the address of the PCB is to be returned. Note that this is a CM data structure.
$nmdebug > wl pcb(8) $80001750
If the PIN does not exist, the function result is undefined and an error status is set.
