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- The PowerDOS Memory Status Program
- (C) 1992 DragonWare Software Inc.
- This program is FreeWare ALL RIGHTS RESERVED!
-
- This program is used to show the memory allocation table of PowerDOS.
- It runs as a background task, and can be called into service by
- holding down both shift keys and the control key. Every second, the
- program checks these keys, and if they are all down, the current
- memory configuration is written to disk. The pathname for this file
- is given as a command line parameter when the program is run. This
- file is written in append mode, so multiple runs will result in the
- file becoming larger and larger. Also note that if you want the
- information written to the screen or printer, just give it a pathname
- of con: or prn:. If the output is sent to the screen, the display
- will just scroll by unless you halt it with a control-s; control-q
- will resume.
-
- Below is a sample output of the program taken while this document was
- being prepared:
-
- PowerDOS Memory Status version 1.0
-
- MDB Start Block Owner Owner Owner
- Index Address Length PID Name Link
- ----- -------- -------- ----- -------------- -----
- 001 174474 105986 -- System 000
- 002 280460 3908 -- System 001
- 003 284368 338 -- System 002
- 004 284706 4 -- System 003
- 005 284710 2988 -- TSR 004
- 007 287698 15750 02 Nmon_0 000
- 008 303448 1022 02 Nmon_0 007
- 006 304470 2172 02 Nmon_0 008
- 009 306642 12 02 Nmon_0 006
- 010 306654 84 -- TSR 005
- 011 306738 1336 -- TSR 010
- 012 308074 4550 -- TSR 011
- 014 312624 8534 -- TSR 012
- 015 321158 8360 -- TSR 014
- 016 329518 43286 -- TSR 015
- 017 372804 6282 -- TSR 016
- 018 379086 69504 -- TSR 017
- 019 448590 14 01 GEM_Desktop 000
- 013 448604 256 01 GEM_Desktop 019
- 021 448860 14 03 GEM_Desktop 020
- 020 448874 384 03 GEM_Desktop 000
- 023 449258 1024 03 GEM_Desktop 021
- 022 450282 29826 03 GEM_Desktop 023
- 024 480108 14 03 GEM_Desktop 022
- 025 480122 2064 03 GEM_Desktop 024
- 027 482186 2226 03 GEM_Desktop 025
- 026 484412 14 03 GEM_Desktop 027
- 028 484426 50992 03 GEM_Desktop 026
- 030 535418 2226 03 GEM_Desktop 028
- 029 537644 14 03 GEM_Desktop 030
- 031 537658 66140 03 GEM_Desktop 029
- 033 603798 2226 03 GEM_Desktop 031
- 032 606024 14 03 GEM_Desktop 033
- 034 606038 49818 03 GEM_Desktop 032
- 036 655856 2226 03 GEM_Desktop 034
- 035 658082 14 03 GEM_Desktop 036
- 037 658096 7984 03 GEM_Desktop 035
- 039 666080 14 04 MEM_STAT.TTP 074
- 054 666094 15986 -- Free 000
- 038 682080 51208 03 GEM_Desktop 037
- 040 733288 9106 03 GEM_Desktop 038
- 041 742394 566 03 GEM_Desktop 040
- 042 742960 566 03 GEM_Desktop 041
- 043 743526 566 03 GEM_Desktop 042
- 044 744092 566 03 GEM_Desktop 043
- 045 744658 566 03 GEM_Desktop 044
- 046 745224 566 03 GEM_Desktop 045
- 047 745790 566 03 GEM_Desktop 046
- 048 746356 566 03 GEM_Desktop 047
- 049 746922 566 03 GEM_Desktop 048
- 050 747488 566 03 GEM_Desktop 049
- 051 748054 566 03 GEM_Desktop 067
- 069 748620 566 03 GEM_Desktop 051
- 070 749186 566 03 GEM_Desktop 069
- 071 749752 566 03 GEM_Desktop 070
- 072 750318 566 03 GEM_Desktop 071
- 073 750884 16000 03 GEM_Desktop 068
- 055 766884 14 05 GENST2.PRG 056
- 057 766898 308 05 GENST2.PRG 055
- 058 767206 678 -- Free 000
- 052 767884 12490 03 GEM_Desktop 050
- 053 780374 23514 05 GENST2.PRG 057
- 060 803888 88224 -- Free 000
- 066 892112 308 03 GEM_Desktop 052
- 067 892420 89114 03 GEM_Desktop 066
- 068 981534 195584 03 GEM_Desktop 072
- 074 1177118 13530 04 MEM_STAT.TTP 000
- 056 1190648 59560 05 GENST2.PRG 000
- 059 1250208 500000 05 GENST2.PRG 053
- 061 1750208 2411328 -- Free 000
-
- Free memory: 2516216
- Largest block of free memory: 2411328
- Memory used for system resources: 110236
- Memory used by TSR programs: 144924
-
- Memory used by programs:
-
- 01 GEM_Desktop: 270
- 02 Nmon_0: 18956
- 03 GEM_Desktop: 599520
- 04 MEM_STAT.TTP: 13544
- 05 GENST2.PRG: 583396
-
-
- The blocks whose owner is System are memory areas used by PowerDOS
- itself. Blocks marked TSR are owned by the system, but came from
- programs that used the Terminate-Stay-Resident function call. All
- other blocks belong to active processes and are labeled with their
- names. (Note that the name is usually the disk file name, but not
- always). Also, if you use this program on a TT with alternative ram,
- two separate areas will be listed, the one for ST ram, as above, and
- one for TT ram. The totals will also reflect the two different kinds
- of ram.
-
- The first column heading, MDB, stands for Memory Descriptor Block.
- The last column heading contains an owner link (free blocks have no
- link). For instance, in the above listing, MEM_STAT.TTP has two
- blocks. The first is MDB number 39, and its link is 74. MDB 74 has no
- link and so only those two blocks are owned by MEM_STAT.TTP.
-
- The Owner PID column tells you the process ID of the process that
- owns the block, if the block is owned by an active process. Note that
- in the above examples there are two GEM_Desktop processes. You can't
- tell the difference by the name, but the process ID is different (one
- and three). (BTW, the reason that there are two desktop processes is
- that in recent versions of the TOS roms, the first desktop started by
- the system actually launches a second desktop, then waits around for
- the second to terminate, which it does when you change resolutions.)
-