MC68030 Datasheet, PDF (309/602 Pages) Motorola, Inc – ENHANCED 32-BIT MICROPROCESSOR

Memory Management Unit
9.5.1.5 SHORT-FORMAT EARLY TERMINATION PAGE DESCRIPTOR. The
short-
format early termination page descriptor contains the page descriptor code in the DT field
but resides in a pointer table. That is, the table in which an early termination page descriptor
is located is not at the bottom level of the address translation tree. The field descriptions in
9.5.1.1 Descriptor Field Definitions apply to corresponding fields of this descriptor. Figure
9-12 shows the format of the short-format early termination page descriptor.
(UNABLE TO LOCATE ART)
Figure 9-12. Short-Format Page Descriptor and
Short-Format Early Termination Page Descriptor
9.5.1.6 LONG-FORMAT EARLY TERMINATION PAGE DESCRIPTOR. The long-format
early termination page descriptor contains the page descriptor code in the DT field but
resides in a pointer table like the short-format early termination page descriptor. The field
descriptions in 9.5.1.1 Descriptor Field Definitions apply to corresponding fields of this
descriptor. Figure 9-13 shows the format of the long-format early termination page
descriptor. The LIMIT field of the long-format descriptor provides a means of limiting the
number of pages to which the descriptor applies.
(UNABLE TO LOCATE ART)
Figure 9-13. Long-Format Early Termination Page Descriptor
MOTOROLA
MC68030 USER’S MANUAL
9-21