8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide
27
Introduction to Programming
1
Module slots 1 to 14 affect the Level 0 summary register as described in
. Bit 0 of the Level 0 summary registers represents the summary of
the status of module slots 15, 16, and 17. The Level 1 summary registers
contain an individual summary for each of these module slots.
Figure 5
The Operational/Questionable Status System for 8166A/B
