24.11 Software Considerations

“NKL11” (8011) must be set to define, for a particular installation, the number of interfaces in the first two groups, and “NDL11” (8012), the nmber in the third group. Any hardware alterations which changed the actual number of interfaces would have to be reflected in the software by changing and recomiling “kl.c”, and relinking the operaing system.

It will be seen that “klopen” calculates the correct kernel mode address (16 bits) for the Receiver Status Register for each interface, and this is stored (8044) into the the “t_addr” element of the appropriate “tty” structure.