1 :Info: sdw: 2022-11-16 sdw
2
3 Syntax: sdw segno/name segno/name
4
5
6 Function: Displays the SDW's in the current process's DSEG.
7
8
9 Arguments:
10 segno/name
11 is the segment number or name of interest. The first is the
12 starting segment number and the second is the ending segment
13 number. If only one is given then only one is displayed if none
14 are given then all are displayed.
15
16
17 Notes on sdw display:
18 The sdw request displays the segment number, name, memory address,
19 ring brackets, the maximum computed address, the entry bound address
20 and a bit string REWPUGCDF.
21
22
23 List of display definitions:
24 ADDRESS
25 is the base address of the segment or segment page table.
26 RNGS
27 the ring brackets of the segment.
28 CA-MAX
29 the highest computed address that may be used in referencing the
30 segment without causing an out_of_segment_bounds fault.
31 EBOUND
32 is the entry bound or call limiter. Any external call to this
33 segment must be to an offset less than the EBOUND if the entry
34 bound switch G is off.
35 SEGNO
36 segment number.
37
38
39 SEGMENT-NAME
40 segment name.
41
42
43 REWPUGCDF
44 The letter will show in the sdw display of the segment if the bit
45 is on. The REWPUGCDF string is broken down as follows:
46 R is the read permission bit
47 E is the execute permission bit
48 W is the write permission bit
49 P is the privileged bit
50 U is the unpaged bit, segment is unpaged has no page table
51 if this bit is on
52 G is the gate indicator or entry bound bit. If off, the entry
53 bound is checked by hardware
54 C is the cache enable switch.
55 DF is the directed fault bit. If on, the necessary page of the
56 segment is in memory.
57
58
59 Examples:
60
61 ADDRESS RNGS CA-MAX REWPUGCDF EBOUND SEGNO SEGMENT-NAME
62 6262154 000 177777 R W G DF 0 200 str_seg
63 0 000 37777 R W G 0 300 >udd>Multics>GDixon
64 3400 000 2777 R W UG DF 0 3 dn355_mailbox
65
66
67 :hcom:
68 /****^ HISTORY COMMENTS:
69 1) change2022-11-16GDixon, approve2023-01-16MCR10129,
70 audit2023-02-28Swenson, install2023-02-28MR12.8-1054:
71 A) Correct typo in description of SDW U bit.
72 END HISTORY COMMENTS */
73