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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.
31
8 7
PAGE ADDRESS
STATUS
24
7
6
5
4,
3
2
1
0
I
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 ter-
mination 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.
3130
16 15
o
31
8 7
I~I
UM1T
STATUS
PAGE ADDRESS
UNUSED
16
16
32
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
o
I
11 11 11 11 11 11 1
Dis
1 0 1
CI
I
0
I
M 1
u
1 WP 1
DT
I
Figure 9-13. Long-Format Early Termination Page Descriptor
MOTOROLA
MC68030 USER'S MANUAL
9-25
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