M80C286
POINTER TESTING INSTRUCTIONS
The M80C286 provides several instructions to
speed pointer testing and consistency checks for
maintaining system integrity (see Table 15) These
instructions use the memory management hardware
to verify that a selector value refers to an appropri-
ate segment without risking an exception A condi-
tion flag (ZF) indicates whether use of the selector
or segment will cause an exception
Figure 20 Task State Segment and TSS Registers
271103 – 18
20