Home » Archimedes archive » Acorn User » AU 1994-Xmas.adf » Programs » StarInfo/Bower/!ReadMe
StarInfo/Bower/!ReadMe
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn User » AU 1994-Xmas.adf » Programs |
| Filename: | StarInfo/Bower/!ReadMe |
| Read OK: | ✔ |
| File size: | 1231 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Memory manager: �MemUtil� By Andrew Bower (Aged 15) 19 August 1994
========================= ========================= ==============
MemUtil provides a method to control the machine's memory allocation out of
the desktop, which is more flexible the *ChangeDynamicArea.
To use the utility double-click on �CSD_here� and type *MemUtil.
The utility does the following:
-help Displays a help message in the style of *Help.
-display Displays the current size and free space of the dynamic areas.
-interactive A means of using the program without learning the syntax.
[-system] [+|-|=]<size in kilobytes>
[-RMA] [+|-|=]<size in kilobytes>
[-screen] [+|-|=]<size in kilobytes>
[-sprite] [+|-|=]<size in kilobytes>
[-font] [+|-|=]<size in kilobytes>
[-RAMFS] [+|-|=]<size in kilobytes>
These options allow the respective dynamic areas to be altered in one of four
ways:
+n increases area by nK
-n decreases area by nK
=n sets area TO nK
n ensures nK FREE in area (perhaps the most useful)
e.g.: -rma +32 increases the RMA size by 32K
-f "-48" reduces the font area by 48K
-screen =320 sets the screen memory to 320K
(useful for non-desktop graphics demonstrations)
-sprite 23 ensures at least 23K FREE in sprite area.
If this utility is included within the library of a hard disc, then its use
is more powerful. For example, it could be used within a boot sequence as a
convenient way of setting the size of several dynamic areas. E.g.:
*MemUtil 0 32 =160 0 =96 =48
.. will shrink the system area as far as possible,
ensure 32K free in RMA (useful when programming outside desktop)
force 160K screen memory (e.g. for screen bank swapping)
shrink sprite area if possible.
set the font cache size to 96K
create a 48K RAM disc.
A game or graphical demo like those masterpieces in *Info, may be less
annoying to the user if he does not have to change the memory allocations
manually with the Task Manager on receiving the error �Bad mode�. The
following command in an Obey file would do the trick.
*MemUtil -screen =160 -sprite 50
.. will set the screen memory to 160K (2 � MODE 13 banks),
ensure 50K free in the sprite area (for naughty programs!).
In interactive mode, this program will prompt the user for the area to change
and the new size for it.
Depending on whether RISC OS 3.50 uses a compatible method for handling
dynamic areas or not, this program may be able to handle them in interactive
mode and may also be able to accept modifications to the program.
I think this program is compatible with RISC OS 2, but I cannot test that
point. The only difference would be that the free space in RAMFS would not be
displayed. ****** It must first be reassembled however. ********
If *MemUtil is used with no parameters, it will use the default environment
string (�-d-h-i�) which is null-terminated and can be found at the end of the
object code thus can be altered using any text editor.
Technical information
=====================
The source code can be found in the BASIC program �MemSource�.
It should be necessary to convert the utility into a module, as mentioned
within the source code, but certain alterations would be necessary.
If you need to reassemble the code, remember to change the path names in
lines 170 and 180.
.change is the subroutine used to change the sizes. It parses the string
supplied for each area and takes slightly different actions according to the
preceeding character (-,+ or =).
The names of the dynamic areas are held in the form of an �OS_PrettyPrint�
dictionary, using �FNname�.
In order to display the memory sizes intelligently, the program uses
�OS_ConvertFixedFileSize� and doctors the output slightly.
To display the free space in a particular area it is necessary to use calls
indepent to each area, thus the table at .table contains the offsets of
routines to call which return the free space in R0 and preserve all other
registers. If the offset is zero, no free space is displayed.
RMA free space: �OS_Module�, describe RMA
screen free space: �OS_ClaimScreenMemory�.
sprite area space: �OS_SpriteOp�, read control area
font cache space: �Font_CacheAddr�
RAMFS free space: �OS_FSControl� 49
The free application memory is read with �OS_GetEnv� but does not include the
Wimp free pool.
The total memory is found by multiplying the page size with the number of
pages (�OS_ReadMemMapInfo�)
Andrew Bower 19 August 1994
================================ 00000000 4d 65 6d 6f 72 79 20 6d 61 6e 61 67 65 72 3a 20 |Memory manager: | 00000010 90 4d 65 6d 55 74 69 6c 91 20 20 20 42 79 20 41 |.MemUtil. By A| 00000020 6e 64 72 65 77 20 42 6f 77 65 72 20 28 41 67 65 |ndrew Bower (Age| 00000030 64 20 31 35 29 20 20 20 20 20 20 20 20 31 39 20 |d 15) 19 | 00000040 41 75 67 75 73 74 20 31 39 39 34 0a 3d 3d 3d 3d |August 1994.====| 00000050 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d |================| 00000060 3d 3d 3d 3d 3d 20 20 20 3d 3d 3d 3d 3d 3d 3d 3d |===== ========| 00000070 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d |================| 00000080 3d 20 20 20 20 20 20 20 20 3d 3d 3d 3d 3d 3d 3d |= =======| 00000090 3d 3d 3d 3d 3d 3d 3d 0a 0a 4d 65 6d 55 74 69 6c |=======..MemUtil| 000000a0 20 70 72 6f 76 69 64 65 73 20 61 20 6d 65 74 68 | provides a meth| 000000b0 6f 64 20 74 6f 20 63 6f 6e 74 72 6f 6c 20 74 68 |od to control th| 000000c0 65 20 6d 61 63 68 69 6e 65 27 73 20 6d 65 6d 6f |e machine's memo| 000000d0 72 79 20 61 6c 6c 6f 63 61 74 69 6f 6e 20 6f 75 |ry allocation ou| 000000e0 74 20 6f 66 0a 74 68 65 20 64 65 73 6b 74 6f 70 |t of.the desktop| 000000f0 2c 20 77 68 69 63 68 20 69 73 20 6d 6f 72 65 20 |, which is more | 00000100 66 6c 65 78 69 62 6c 65 20 74 68 65 20 2a 43 68 |flexible the *Ch| 00000110 61 6e 67 65 44 79 6e 61 6d 69 63 41 72 65 61 2e |angeDynamicArea.| 00000120 0a 0a 54 6f 20 75 73 65 20 74 68 65 20 75 74 69 |..To use the uti| 00000130 6c 69 74 79 20 64 6f 75 62 6c 65 2d 63 6c 69 63 |lity double-clic| 00000140 6b 20 6f 6e 20 90 43 53 44 5f 68 65 72 65 91 20 |k on .CSD_here. | 00000150 61 6e 64 20 74 79 70 65 20 2a 4d 65 6d 55 74 69 |and type *MemUti| 00000160 6c 2e 0a 0a 54 68 65 20 75 74 69 6c 69 74 79 20 |l...The utility | 00000170 64 6f 65 73 20 74 68 65 20 66 6f 6c 6c 6f 77 69 |does the followi| 00000180 6e 67 3a 0a 0a 2d 68 65 6c 70 20 20 20 20 20 20 |ng:..-help | 00000190 20 20 20 44 69 73 70 6c 61 79 73 20 61 20 68 65 | Displays a he| 000001a0 6c 70 20 6d 65 73 73 61 67 65 20 69 6e 20 74 68 |lp message in th| 000001b0 65 20 73 74 79 6c 65 20 6f 66 20 2a 48 65 6c 70 |e style of *Help| 000001c0 2e 0a 2d 64 69 73 70 6c 61 79 20 20 20 20 20 20 |..-display | 000001d0 44 69 73 70 6c 61 79 73 20 74 68 65 20 63 75 72 |Displays the cur| 000001e0 72 65 6e 74 20 73 69 7a 65 20 61 6e 64 20 66 72 |rent size and fr| 000001f0 65 65 20 73 70 61 63 65 20 6f 66 20 74 68 65 20 |ee space of the | 00000200 64 79 6e 61 6d 69 63 20 61 72 65 61 73 2e 0a 2d |dynamic areas..-| 00000210 69 6e 74 65 72 61 63 74 69 76 65 20 20 41 20 6d |interactive A m| 00000220 65 61 6e 73 20 6f 66 20 75 73 69 6e 67 20 74 68 |eans of using th| 00000230 65 20 70 72 6f 67 72 61 6d 20 77 69 74 68 6f 75 |e program withou| 00000240 74 20 6c 65 61 72 6e 69 6e 67 20 74 68 65 20 73 |t learning the s| 00000250 79 6e 74 61 78 2e 0a 0a 5b 2d 73 79 73 74 65 6d |yntax...[-system| 00000260 5d 20 5b 2b 7c 2d 7c 3d 5d 3c 73 69 7a 65 20 69 |] [+|-|=]<size i| 00000270 6e 20 6b 69 6c 6f 62 79 74 65 73 3e 0a 5b 2d 52 |n kilobytes>.[-R| 00000280 4d 41 5d 20 20 20 20 5b 2b 7c 2d 7c 3d 5d 3c 73 |MA] [+|-|=]<s| 00000290 69 7a 65 20 69 6e 20 6b 69 6c 6f 62 79 74 65 73 |ize in kilobytes| 000002a0 3e 0a 5b 2d 73 63 72 65 65 6e 5d 20 5b 2b 7c 2d |>.[-screen] [+|-| 000002b0 7c 3d 5d 3c 73 69 7a 65 20 69 6e 20 6b 69 6c 6f ||=]<size in kilo| 000002c0 62 79 74 65 73 3e 0a 5b 2d 73 70 72 69 74 65 5d |bytes>.[-sprite]| 000002d0 20 5b 2b 7c 2d 7c 3d 5d 3c 73 69 7a 65 20 69 6e | [+|-|=]<size in| 000002e0 20 6b 69 6c 6f 62 79 74 65 73 3e 0a 5b 2d 66 6f | kilobytes>.[-fo| 000002f0 6e 74 5d 20 20 20 5b 2b 7c 2d 7c 3d 5d 3c 73 69 |nt] [+|-|=]<si| 00000300 7a 65 20 69 6e 20 6b 69 6c 6f 62 79 74 65 73 3e |ze in kilobytes>| 00000310 0a 5b 2d 52 41 4d 46 53 5d 20 20 5b 2b 7c 2d 7c |.[-RAMFS] [+|-|| 00000320 3d 5d 3c 73 69 7a 65 20 69 6e 20 6b 69 6c 6f 62 |=]<size in kilob| 00000330 79 74 65 73 3e 0a 0a 54 68 65 73 65 20 6f 70 74 |ytes>..These opt| 00000340 69 6f 6e 73 20 61 6c 6c 6f 77 20 74 68 65 20 72 |ions allow the r| 00000350 65 73 70 65 63 74 69 76 65 20 64 79 6e 61 6d 69 |espective dynami| 00000360 63 20 61 72 65 61 73 20 74 6f 20 62 65 20 61 6c |c areas to be al| 00000370 74 65 72 65 64 20 69 6e 20 6f 6e 65 20 6f 66 20 |tered in one of | 00000380 66 6f 75 72 0a 77 61 79 73 3a 0a 0a 20 20 2b 6e |four.ways:.. +n| 00000390 20 20 69 6e 63 72 65 61 73 65 73 20 61 72 65 61 | increases area| 000003a0 20 62 79 20 6e 4b 0a 20 20 2d 6e 20 20 64 65 63 | by nK. -n dec| 000003b0 72 65 61 73 65 73 20 61 72 65 61 20 62 79 20 6e |reases area by n| 000003c0 4b 0a 20 20 3d 6e 20 20 73 65 74 73 20 61 72 65 |K. =n sets are| 000003d0 61 20 54 4f 20 6e 4b 0a 20 20 6e 20 20 20 65 6e |a TO nK. n en| 000003e0 73 75 72 65 73 20 6e 4b 20 46 52 45 45 20 69 6e |sures nK FREE in| 000003f0 20 61 72 65 61 20 20 20 20 28 70 65 72 68 61 70 | area (perhap| 00000400 73 20 74 68 65 20 6d 6f 73 74 20 75 73 65 66 75 |s the most usefu| 00000410 6c 29 0a 0a 65 2e 67 2e 3a 20 20 20 2d 72 6d 61 |l)..e.g.: -rma| 00000420 20 2b 33 32 20 20 20 20 20 20 20 20 20 69 6e 63 | +32 inc| 00000430 72 65 61 73 65 73 20 74 68 65 20 52 4d 41 20 73 |reases the RMA s| 00000440 69 7a 65 20 62 79 20 33 32 4b 0a 20 20 20 20 20 |ize by 32K. | 00000450 20 20 20 2d 66 20 22 2d 34 38 22 20 20 20 20 20 | -f "-48" | 00000460 20 20 20 20 72 65 64 75 63 65 73 20 74 68 65 20 | reduces the | 00000470 66 6f 6e 74 20 61 72 65 61 20 62 79 20 34 38 4b |font area by 48K| 00000480 0a 20 20 20 20 20 20 20 20 2d 73 63 72 65 65 6e |. -screen| 00000490 20 3d 33 32 30 20 20 20 20 20 73 65 74 73 20 74 | =320 sets t| 000004a0 68 65 20 73 63 72 65 65 6e 20 6d 65 6d 6f 72 79 |he screen memory| 000004b0 20 74 6f 20 33 32 30 4b 0a 20 20 20 20 20 20 20 | to 320K. | 000004c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000004d0 20 20 20 20 20 28 75 73 65 66 75 6c 20 66 6f 72 | (useful for| 000004e0 20 6e 6f 6e 2d 64 65 73 6b 74 6f 70 20 67 72 61 | non-desktop gra| 000004f0 70 68 69 63 73 20 64 65 6d 6f 6e 73 74 72 61 74 |phics demonstrat| 00000500 69 6f 6e 73 29 0a 20 20 20 20 20 20 20 20 2d 73 |ions). -s| 00000510 70 72 69 74 65 20 32 33 20 20 20 20 20 20 20 65 |prite 23 e| 00000520 6e 73 75 72 65 73 20 61 74 20 6c 65 61 73 74 20 |nsures at least | 00000530 32 33 4b 20 46 52 45 45 20 69 6e 20 73 70 72 69 |23K FREE in spri| 00000540 74 65 20 61 72 65 61 2e 0a 20 20 20 20 20 20 20 |te area.. | 00000550 20 0a 49 66 20 74 68 69 73 20 75 74 69 6c 69 74 | .If this utilit| 00000560 79 20 69 73 20 69 6e 63 6c 75 64 65 64 20 77 69 |y is included wi| 00000570 74 68 69 6e 20 74 68 65 20 6c 69 62 72 61 72 79 |thin the library| 00000580 20 6f 66 20 61 20 68 61 72 64 20 64 69 73 63 2c | of a hard disc,| 00000590 20 74 68 65 6e 20 69 74 73 20 75 73 65 0a 69 73 | then its use.is| 000005a0 20 6d 6f 72 65 20 70 6f 77 65 72 66 75 6c 2e 20 | more powerful. | 000005b0 46 6f 72 20 65 78 61 6d 70 6c 65 2c 20 69 74 20 |For example, it | 000005c0 63 6f 75 6c 64 20 62 65 20 75 73 65 64 20 77 69 |could be used wi| 000005d0 74 68 69 6e 20 61 20 62 6f 6f 74 20 73 65 71 75 |thin a boot sequ| 000005e0 65 6e 63 65 20 61 73 20 61 0a 63 6f 6e 76 65 6e |ence as a.conven| 000005f0 69 65 6e 74 20 77 61 79 20 6f 66 20 73 65 74 74 |ient way of sett| 00000600 69 6e 67 20 74 68 65 20 73 69 7a 65 20 6f 66 20 |ing the size of | 00000610 73 65 76 65 72 61 6c 20 64 79 6e 61 6d 69 63 20 |several dynamic | 00000620 61 72 65 61 73 2e 20 45 2e 67 2e 3a 0a 0a 2a 4d |areas. E.g.:..*M| 00000630 65 6d 55 74 69 6c 20 30 20 33 32 20 3d 31 36 30 |emUtil 0 32 =160| 00000640 20 30 20 3d 39 36 20 3d 34 38 0a 0a 20 20 20 20 | 0 =96 =48.. | 00000650 2e 2e 20 77 69 6c 6c 20 73 68 72 69 6e 6b 20 74 |.. will shrink t| 00000660 68 65 20 73 79 73 74 65 6d 20 61 72 65 61 20 61 |he system area a| 00000670 73 20 66 61 72 20 61 73 20 70 6f 73 73 69 62 6c |s far as possibl| 00000680 65 2c 0a 20 20 20 20 20 20 20 65 6e 73 75 72 65 |e,. ensure| 00000690 20 33 32 4b 20 66 72 65 65 20 69 6e 20 52 4d 41 | 32K free in RMA| 000006a0 20 28 75 73 65 66 75 6c 20 77 68 65 6e 20 70 72 | (useful when pr| 000006b0 6f 67 72 61 6d 6d 69 6e 67 20 6f 75 74 73 69 64 |ogramming outsid| 000006c0 65 20 64 65 73 6b 74 6f 70 29 0a 20 20 20 20 20 |e desktop). | 000006d0 20 20 66 6f 72 63 65 20 31 36 30 4b 20 73 63 72 | force 160K scr| 000006e0 65 65 6e 20 6d 65 6d 6f 72 79 20 28 65 2e 67 2e |een memory (e.g.| 000006f0 20 66 6f 72 20 73 63 72 65 65 6e 20 62 61 6e 6b | for screen bank| 00000700 20 73 77 61 70 70 69 6e 67 29 0a 20 20 20 20 20 | swapping). | 00000710 20 20 73 68 72 69 6e 6b 20 73 70 72 69 74 65 20 | shrink sprite | 00000720 61 72 65 61 20 69 66 20 70 6f 73 73 69 62 6c 65 |area if possible| 00000730 2e 0a 20 20 20 20 20 20 20 73 65 74 20 74 68 65 |.. set the| 00000740 20 66 6f 6e 74 20 63 61 63 68 65 20 73 69 7a 65 | font cache size| 00000750 20 74 6f 20 39 36 4b 0a 20 20 20 20 20 20 20 63 | to 96K. c| 00000760 72 65 61 74 65 20 61 20 34 38 4b 20 52 41 4d 20 |reate a 48K RAM | 00000770 64 69 73 63 2e 0a 0a 41 20 67 61 6d 65 20 6f 72 |disc...A game or| 00000780 20 67 72 61 70 68 69 63 61 6c 20 64 65 6d 6f 20 | graphical demo | 00000790 6c 69 6b 65 20 74 68 6f 73 65 20 6d 61 73 74 65 |like those maste| 000007a0 72 70 69 65 63 65 73 20 69 6e 20 2a 49 6e 66 6f |rpieces in *Info| 000007b0 2c 20 6d 61 79 20 62 65 20 6c 65 73 73 0a 61 6e |, may be less.an| 000007c0 6e 6f 79 69 6e 67 20 74 6f 20 74 68 65 20 75 73 |noying to the us| 000007d0 65 72 20 69 66 20 68 65 20 64 6f 65 73 20 6e 6f |er if he does no| 000007e0 74 20 68 61 76 65 20 74 6f 20 63 68 61 6e 67 65 |t have to change| 000007f0 20 74 68 65 20 6d 65 6d 6f 72 79 20 61 6c 6c 6f | the memory allo| 00000800 63 61 74 69 6f 6e 73 0a 6d 61 6e 75 61 6c 6c 79 |cations.manually| 00000810 20 77 69 74 68 20 74 68 65 20 54 61 73 6b 20 4d | with the Task M| 00000820 61 6e 61 67 65 72 20 6f 6e 20 72 65 63 65 69 76 |anager on receiv| 00000830 69 6e 67 20 74 68 65 20 65 72 72 6f 72 20 90 42 |ing the error .B| 00000840 61 64 20 6d 6f 64 65 91 2e 20 54 68 65 0a 66 6f |ad mode.. The.fo| 00000850 6c 6c 6f 77 69 6e 67 20 63 6f 6d 6d 61 6e 64 20 |llowing command | 00000860 69 6e 20 61 6e 20 4f 62 65 79 20 66 69 6c 65 20 |in an Obey file | 00000870 77 6f 75 6c 64 20 64 6f 20 74 68 65 20 74 72 69 |would do the tri| 00000880 63 6b 2e 0a 20 20 20 20 20 20 20 0a 2a 4d 65 6d |ck.. .*Mem| 00000890 55 74 69 6c 20 2d 73 63 72 65 65 6e 20 3d 31 36 |Util -screen =16| 000008a0 30 20 2d 73 70 72 69 74 65 20 35 30 0a 0a 20 20 |0 -sprite 50.. | 000008b0 20 20 2e 2e 20 77 69 6c 6c 20 73 65 74 20 74 68 | .. will set th| 000008c0 65 20 73 63 72 65 65 6e 20 6d 65 6d 6f 72 79 20 |e screen memory | 000008d0 74 6f 20 31 36 30 4b 20 20 28 32 20 d7 20 4d 4f |to 160K (2 . MO| 000008e0 44 45 20 31 33 20 62 61 6e 6b 73 29 2c 0a 20 20 |DE 13 banks),. | 000008f0 20 20 20 20 20 65 6e 73 75 72 65 20 35 30 4b 20 | ensure 50K | 00000900 66 72 65 65 20 69 6e 20 74 68 65 20 73 70 72 69 |free in the spri| 00000910 74 65 20 61 72 65 61 20 28 66 6f 72 20 6e 61 75 |te area (for nau| 00000920 67 68 74 79 20 70 72 6f 67 72 61 6d 73 21 29 2e |ghty programs!).| 00000930 0a 20 20 20 20 20 20 20 0a 49 6e 20 69 6e 74 65 |. .In inte| 00000940 72 61 63 74 69 76 65 20 6d 6f 64 65 2c 20 74 68 |ractive mode, th| 00000950 69 73 20 70 72 6f 67 72 61 6d 20 77 69 6c 6c 20 |is program will | 00000960 70 72 6f 6d 70 74 20 74 68 65 20 75 73 65 72 20 |prompt the user | 00000970 66 6f 72 20 74 68 65 20 61 72 65 61 20 74 6f 20 |for the area to | 00000980 63 68 61 6e 67 65 0a 61 6e 64 20 74 68 65 20 6e |change.and the n| 00000990 65 77 20 73 69 7a 65 20 66 6f 72 20 69 74 2e 0a |ew size for it..| 000009a0 0a 44 65 70 65 6e 64 69 6e 67 20 6f 6e 20 77 68 |.Depending on wh| 000009b0 65 74 68 65 72 20 52 49 53 43 20 4f 53 20 33 2e |ether RISC OS 3.| 000009c0 35 30 20 75 73 65 73 20 61 20 63 6f 6d 70 61 74 |50 uses a compat| 000009d0 69 62 6c 65 20 6d 65 74 68 6f 64 20 66 6f 72 20 |ible method for | 000009e0 68 61 6e 64 6c 69 6e 67 0a 64 79 6e 61 6d 69 63 |handling.dynamic| 000009f0 20 61 72 65 61 73 20 6f 72 20 6e 6f 74 2c 20 74 | areas or not, t| 00000a00 68 69 73 20 70 72 6f 67 72 61 6d 20 6d 61 79 20 |his program may | 00000a10 62 65 20 61 62 6c 65 20 74 6f 20 68 61 6e 64 6c |be able to handl| 00000a20 65 20 74 68 65 6d 20 69 6e 20 69 6e 74 65 72 61 |e them in intera| 00000a30 63 74 69 76 65 0a 6d 6f 64 65 20 61 6e 64 20 6d |ctive.mode and m| 00000a40 61 79 20 61 6c 73 6f 20 62 65 20 61 62 6c 65 20 |ay also be able | 00000a50 74 6f 20 61 63 63 65 70 74 20 6d 6f 64 69 66 69 |to accept modifi| 00000a60 63 61 74 69 6f 6e 73 20 74 6f 20 74 68 65 20 70 |cations to the p| 00000a70 72 6f 67 72 61 6d 2e 0a 0a 49 20 74 68 69 6e 6b |rogram...I think| 00000a80 20 74 68 69 73 20 70 72 6f 67 72 61 6d 20 69 73 | this program is| 00000a90 20 63 6f 6d 70 61 74 69 62 6c 65 20 77 69 74 68 | compatible with| 00000aa0 20 52 49 53 43 20 4f 53 20 32 2c 20 62 75 74 20 | RISC OS 2, but | 00000ab0 49 20 63 61 6e 6e 6f 74 20 74 65 73 74 20 74 68 |I cannot test th| 00000ac0 61 74 0a 70 6f 69 6e 74 2e 20 54 68 65 20 6f 6e |at.point. The on| 00000ad0 6c 79 20 64 69 66 66 65 72 65 6e 63 65 20 77 6f |ly difference wo| 00000ae0 75 6c 64 20 62 65 20 74 68 61 74 20 74 68 65 20 |uld be that the | 00000af0 66 72 65 65 20 73 70 61 63 65 20 69 6e 20 52 41 |free space in RA| 00000b00 4d 46 53 20 77 6f 75 6c 64 20 6e 6f 74 20 62 65 |MFS would not be| 00000b10 0a 64 69 73 70 6c 61 79 65 64 2e 20 2a 2a 2a 2a |.displayed. ****| 00000b20 2a 2a 20 49 74 20 6d 75 73 74 20 66 69 72 73 74 |** It must first| 00000b30 20 62 65 20 72 65 61 73 73 65 6d 62 6c 65 64 20 | be reassembled | 00000b40 68 6f 77 65 76 65 72 2e 20 2a 2a 2a 2a 2a 2a 2a |however. *******| 00000b50 2a 0a 0a 49 66 20 2a 4d 65 6d 55 74 69 6c 20 69 |*..If *MemUtil i| 00000b60 73 20 75 73 65 64 20 77 69 74 68 20 6e 6f 20 70 |s used with no p| 00000b70 61 72 61 6d 65 74 65 72 73 2c 20 69 74 20 77 69 |arameters, it wi| 00000b80 6c 6c 20 75 73 65 20 74 68 65 20 64 65 66 61 75 |ll use the defau| 00000b90 6c 74 20 65 6e 76 69 72 6f 6e 6d 65 6e 74 0a 73 |lt environment.s| 00000ba0 74 72 69 6e 67 20 28 90 2d 64 2d 68 2d 69 91 29 |tring (.-d-h-i.)| 00000bb0 20 77 68 69 63 68 20 69 73 20 6e 75 6c 6c 2d 74 | which is null-t| 00000bc0 65 72 6d 69 6e 61 74 65 64 20 61 6e 64 20 63 61 |erminated and ca| 00000bd0 6e 20 62 65 20 66 6f 75 6e 64 20 61 74 20 74 68 |n be found at th| 00000be0 65 20 65 6e 64 20 6f 66 20 74 68 65 0a 6f 62 6a |e end of the.obj| 00000bf0 65 63 74 20 63 6f 64 65 20 74 68 75 73 20 63 61 |ect code thus ca| 00000c00 6e 20 62 65 20 61 6c 74 65 72 65 64 20 75 73 69 |n be altered usi| 00000c10 6e 67 20 61 6e 79 20 74 65 78 74 20 65 64 69 74 |ng any text edit| 00000c20 6f 72 2e 0a 0a 54 65 63 68 6e 69 63 61 6c 20 69 |or...Technical i| 00000c30 6e 66 6f 72 6d 61 74 69 6f 6e 0a 3d 3d 3d 3d 3d |nformation.=====| 00000c40 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d |================| 00000c50 0a 0a 54 68 65 20 73 6f 75 72 63 65 20 63 6f 64 |..The source cod| 00000c60 65 20 63 61 6e 20 62 65 20 66 6f 75 6e 64 20 69 |e can be found i| 00000c70 6e 20 74 68 65 20 42 41 53 49 43 20 70 72 6f 67 |n the BASIC prog| 00000c80 72 61 6d 20 90 4d 65 6d 53 6f 75 72 63 65 91 2e |ram .MemSource..| 00000c90 0a 0a 49 74 20 73 68 6f 75 6c 64 20 62 65 20 6e |..It should be n| 00000ca0 65 63 65 73 73 61 72 79 20 74 6f 20 63 6f 6e 76 |ecessary to conv| 00000cb0 65 72 74 20 74 68 65 20 75 74 69 6c 69 74 79 20 |ert the utility | 00000cc0 69 6e 74 6f 20 61 20 6d 6f 64 75 6c 65 2c 20 61 |into a module, a| 00000cd0 73 20 6d 65 6e 74 69 6f 6e 65 64 0a 77 69 74 68 |s mentioned.with| 00000ce0 69 6e 20 74 68 65 20 73 6f 75 72 63 65 20 63 6f |in the source co| 00000cf0 64 65 2c 20 62 75 74 20 63 65 72 74 61 69 6e 20 |de, but certain | 00000d00 61 6c 74 65 72 61 74 69 6f 6e 73 20 77 6f 75 6c |alterations woul| 00000d10 64 20 62 65 20 6e 65 63 65 73 73 61 72 79 2e 0a |d be necessary..| 00000d20 0a 49 66 20 79 6f 75 20 6e 65 65 64 20 74 6f 20 |.If you need to | 00000d30 72 65 61 73 73 65 6d 62 6c 65 20 74 68 65 20 63 |reassemble the c| 00000d40 6f 64 65 2c 20 72 65 6d 65 6d 62 65 72 20 74 6f |ode, remember to| 00000d50 20 63 68 61 6e 67 65 20 74 68 65 20 70 61 74 68 | change the path| 00000d60 20 6e 61 6d 65 73 20 69 6e 0a 6c 69 6e 65 73 20 | names in.lines | 00000d70 31 37 30 20 61 6e 64 20 31 38 30 2e 0a 0a 2e 63 |170 and 180....c| 00000d80 68 61 6e 67 65 20 69 73 20 74 68 65 20 73 75 62 |hange is the sub| 00000d90 72 6f 75 74 69 6e 65 20 75 73 65 64 20 74 6f 20 |routine used to | 00000da0 63 68 61 6e 67 65 20 74 68 65 20 73 69 7a 65 73 |change the sizes| 00000db0 2e 20 49 74 20 70 61 72 73 65 73 20 74 68 65 20 |. It parses the | 00000dc0 73 74 72 69 6e 67 0a 73 75 70 70 6c 69 65 64 20 |string.supplied | 00000dd0 66 6f 72 20 65 61 63 68 20 61 72 65 61 20 61 6e |for each area an| 00000de0 64 20 74 61 6b 65 73 20 73 6c 69 67 68 74 6c 79 |d takes slightly| 00000df0 20 64 69 66 66 65 72 65 6e 74 20 61 63 74 69 6f | different actio| 00000e00 6e 73 20 61 63 63 6f 72 64 69 6e 67 20 74 6f 20 |ns according to | 00000e10 74 68 65 0a 70 72 65 63 65 65 64 69 6e 67 20 63 |the.preceeding c| 00000e20 68 61 72 61 63 74 65 72 20 28 2d 2c 2b 20 6f 72 |haracter (-,+ or| 00000e30 20 3d 29 2e 0a 0a 54 68 65 20 6e 61 6d 65 73 20 | =)...The names | 00000e40 6f 66 20 74 68 65 20 64 79 6e 61 6d 69 63 20 61 |of the dynamic a| 00000e50 72 65 61 73 20 61 72 65 20 68 65 6c 64 20 69 6e |reas are held in| 00000e60 20 74 68 65 20 66 6f 72 6d 20 6f 66 20 61 6e 20 | the form of an | 00000e70 90 4f 53 5f 50 72 65 74 74 79 50 72 69 6e 74 91 |.OS_PrettyPrint.| 00000e80 0a 64 69 63 74 69 6f 6e 61 72 79 2c 20 75 73 69 |.dictionary, usi| 00000e90 6e 67 20 90 46 4e 6e 61 6d 65 91 2e 0a 0a 49 6e |ng .FNname....In| 00000ea0 20 6f 72 64 65 72 20 74 6f 20 64 69 73 70 6c 61 | order to displa| 00000eb0 79 20 74 68 65 20 6d 65 6d 6f 72 79 20 73 69 7a |y the memory siz| 00000ec0 65 73 20 69 6e 74 65 6c 6c 69 67 65 6e 74 6c 79 |es intelligently| 00000ed0 2c 20 74 68 65 20 70 72 6f 67 72 61 6d 20 75 73 |, the program us| 00000ee0 65 73 0a 90 4f 53 5f 43 6f 6e 76 65 72 74 46 69 |es..OS_ConvertFi| 00000ef0 78 65 64 46 69 6c 65 53 69 7a 65 91 20 61 6e 64 |xedFileSize. and| 00000f00 20 64 6f 63 74 6f 72 73 20 74 68 65 20 6f 75 74 | doctors the out| 00000f10 70 75 74 20 73 6c 69 67 68 74 6c 79 2e 0a 0a 54 |put slightly...T| 00000f20 6f 20 64 69 73 70 6c 61 79 20 74 68 65 20 66 72 |o display the fr| 00000f30 65 65 20 73 70 61 63 65 20 69 6e 20 61 20 70 61 |ee space in a pa| 00000f40 72 74 69 63 75 6c 61 72 20 61 72 65 61 20 69 74 |rticular area it| 00000f50 20 69 73 20 6e 65 63 65 73 73 61 72 79 20 74 6f | is necessary to| 00000f60 20 75 73 65 20 63 61 6c 6c 73 0a 69 6e 64 65 70 | use calls.indep| 00000f70 65 6e 74 20 74 6f 20 65 61 63 68 20 61 72 65 61 |ent to each area| 00000f80 2c 20 74 68 75 73 20 74 68 65 20 74 61 62 6c 65 |, thus the table| 00000f90 20 61 74 20 2e 74 61 62 6c 65 20 63 6f 6e 74 61 | at .table conta| 00000fa0 69 6e 73 20 74 68 65 20 6f 66 66 73 65 74 73 20 |ins the offsets | 00000fb0 6f 66 0a 72 6f 75 74 69 6e 65 73 20 74 6f 20 63 |of.routines to c| 00000fc0 61 6c 6c 20 77 68 69 63 68 20 72 65 74 75 72 6e |all which return| 00000fd0 20 74 68 65 20 66 72 65 65 20 73 70 61 63 65 20 | the free space | 00000fe0 69 6e 20 52 30 20 61 6e 64 20 70 72 65 73 65 72 |in R0 and preser| 00000ff0 76 65 20 61 6c 6c 20 6f 74 68 65 72 0a 72 65 67 |ve all other.reg| 00001000 69 73 74 65 72 73 2e 20 49 66 20 74 68 65 20 6f |isters. If the o| 00001010 66 66 73 65 74 20 69 73 20 7a 65 72 6f 2c 20 6e |ffset is zero, n| 00001020 6f 20 66 72 65 65 20 73 70 61 63 65 20 69 73 20 |o free space is | 00001030 64 69 73 70 6c 61 79 65 64 2e 0a 0a 52 4d 41 20 |displayed...RMA | 00001040 66 72 65 65 20 73 70 61 63 65 3a 20 20 20 20 20 |free space: | 00001050 90 4f 53 5f 4d 6f 64 75 6c 65 91 2c 20 64 65 73 |.OS_Module., des| 00001060 63 72 69 62 65 20 52 4d 41 0a 73 63 72 65 65 6e |cribe RMA.screen| 00001070 20 66 72 65 65 20 73 70 61 63 65 3a 20 20 90 4f | free space: .O| 00001080 53 5f 43 6c 61 69 6d 53 63 72 65 65 6e 4d 65 6d |S_ClaimScreenMem| 00001090 6f 72 79 91 2e 0a 73 70 72 69 74 65 20 61 72 65 |ory...sprite are| 000010a0 61 20 73 70 61 63 65 3a 20 20 90 4f 53 5f 53 70 |a space: .OS_Sp| 000010b0 72 69 74 65 4f 70 91 2c 20 72 65 61 64 20 63 6f |riteOp., read co| 000010c0 6e 74 72 6f 6c 20 61 72 65 61 0a 66 6f 6e 74 20 |ntrol area.font | 000010d0 63 61 63 68 65 20 73 70 61 63 65 3a 20 20 20 90 |cache space: .| 000010e0 46 6f 6e 74 5f 43 61 63 68 65 41 64 64 72 91 0a |Font_CacheAddr..| 000010f0 52 41 4d 46 53 20 66 72 65 65 20 73 70 61 63 65 |RAMFS free space| 00001100 3a 20 20 20 90 4f 53 5f 46 53 43 6f 6e 74 72 6f |: .OS_FSContro| 00001110 6c 91 20 34 39 0a 0a 54 68 65 20 66 72 65 65 20 |l. 49..The free | 00001120 61 70 70 6c 69 63 61 74 69 6f 6e 20 6d 65 6d 6f |application memo| 00001130 72 79 20 69 73 20 72 65 61 64 20 77 69 74 68 20 |ry is read with | 00001140 90 4f 53 5f 47 65 74 45 6e 76 91 20 62 75 74 20 |.OS_GetEnv. but | 00001150 64 6f 65 73 20 6e 6f 74 20 69 6e 63 6c 75 64 65 |does not include| 00001160 20 74 68 65 0a 57 69 6d 70 20 66 72 65 65 20 70 | the.Wimp free p| 00001170 6f 6f 6c 2e 0a 0a 54 68 65 20 74 6f 74 61 6c 20 |ool...The total | 00001180 6d 65 6d 6f 72 79 20 69 73 20 66 6f 75 6e 64 20 |memory is found | 00001190 62 79 20 6d 75 6c 74 69 70 6c 79 69 6e 67 20 74 |by multiplying t| 000011a0 68 65 20 70 61 67 65 20 73 69 7a 65 20 77 69 74 |he page size wit| 000011b0 68 20 74 68 65 20 6e 75 6d 62 65 72 20 6f 66 0a |h the number of.| 000011c0 70 61 67 65 73 20 28 90 4f 53 5f 52 65 61 64 4d |pages (.OS_ReadM| 000011d0 65 6d 4d 61 70 49 6e 66 6f 91 29 0a 0a 0a 20 20 |emMapInfo.)... | 000011e0 20 20 20 20 20 20 20 41 6e 64 72 65 77 20 42 6f | Andrew Bo| 000011f0 77 65 72 20 20 20 20 20 20 31 39 20 41 75 67 75 |wer 19 Augu| 00001200 73 74 20 31 39 39 34 0a 20 20 20 20 20 20 20 20 |st 1994. | 00001210 20 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d | ===============| 00001220 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d |================| 00001230 3d |=| 00001231
.