Home » Archimedes archive » Acorn User » AU 1996-01.adf » Regulars » Education/netscrap/NetScrap
Education/netscrap/NetScrap
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 1996-01.adf » Regulars |
| Filename: | Education/netscrap/NetScrap |
| Read OK: | ✔ |
| File size: | 1E15 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Ovation 1.42S (06-May-1994)
!MainDict !Special P d L �� ]7 � t� � �
SwissB.Medium � @A D D H D � ���� ��? DA D �� H H H BodyText � ��?� �. �. �+ x6 �� H H H H G� ��?� �. �. �+ x6 � t T 0�
� H G�Dear Geoff
After reading Bill Lamin's article 'Turbocharging the network' I thought that we had a more refined solution so I have enclosed an article for your perusal which may be of interest to your readers. I think that this would probably be of great benefit to Mr. Lamin on his network and we will send you a copy of !NetScrap to put on the disc if you wish. Hope this is OK and if there is anything else I can do please get in touch.
Allan
-------------------------------------------------------------------------------------------------------------------------------
Network GTI � �n Allan Kealey
Like Bill Lamin we have also been struggling with an Acorn Ethernet network but have come up with a different approach to the !Scrap problem. I did not relish the thought of copying !Scrap into every pupils user area on our network and toyed with several ideas. The most outlandish involved getting the network boot up routine to create a RAM disc on the users machine when that machine logged onto the network. This would have !Scrap loaded into it which would then be moved on to the users network area. This seemed very complicated and not really worth the effort. The process that is described below works on our network and has, touch wood, never caused any problems at all!
The Network
Our network has a main fileserver which runs Level 4, CD Net II and !Netgain, a very much ignored but very efficient application server. In a similar way to Bill Lamin's network when client stations are first switched on they log onto the network various management issues are dealt with i.e. !Alarms and !Configure are unplugged, a backdrop with useful programs pinned to it is loaded, the floppy disc icon is removed from the icon bar and the Netgain module is loaded. This ensures that there are no viruses or games etc to bother about! We also run a file transfer service for pupils who wish to bring work from home.
Netgain is a read only filing system and all the applications that the pupils used are stored in it. The access most of these programs through the Apps folder on the icon bar the most popular ones are pinned to the backdrop to make the system even easier to use. We only have 700 users but we quickly realised that the memory overheads from the !Scrap application alone was more than we could stand plus we also could foresee problems if a pupil deleted this important application. We developed !NetScrap.
!NetScrap
We try to run a tidy network and feel that we should lead by example so we make sure that all the applications the pupils use are organised in a Directory tree i.e. all the Word Processors together, Design Processor in a folder on its own etc. Certain applications require !Scrap whilst others do not so a copy of !NetScrap is put into each of these directories i.e. the Printers directory contains !Printers, !EcoPrint and !NetScrap.
All pupils are encouraged to log on every time they use the network so the problem of the scrap directory then becomes an easy one to solve. One unexpected advantage from this was that pupils cannot print if they are not logged on, this prevents random printing!
!NetScrap creates a dummy !Scrap directory in the users network area if one does not already exist and points all the users of !Scrap to this dummy directory. If the pupils delete this directory then !NetScrap will automatically recreate this directory the next time !NetScrap is seen. The memory overheads are non-existant. Files are occasionally left behind in the dummy scrap directory but this is usually due to some error with the application using scrap. I counted the memory requirements of theses dummy directories of twenty of our network users and found it to be a massive 0K! The application itself is only 5K so we are justifiably satisfied with our solution.
There is one unforeseen niggle. The first time the dummy scrap directory is created an error message 'Expression is a String' is generated. If the user clicks on Cancel everything just works!
I must acknowledge D. Taylor of Room 20 software for his assistance. � � H; 8 G� �D� �x6 f�( G(; ����x6 df� Ghs � ��x6 ef� G�� ����x6 df� G�� ����x6 ef� G( �@0�x6 f� GhT� �x6 f� G���4h �x6 f� G��� �x6 f� G(��d��x6 �f� Gh5� �x6 f� G�m�t��x6 %f� G�� �x6 f� G(��D��x6 ]f� Gh����x6 ff� G�N����x6 bf� G��L7�x6 Xf� G(��D��x6 \f� Gh����x6 [f� G�/� ��x6 ]f� G�g��:�x6 f� G(�� �x6 f� Gh��� �x6 f� G���X�x6 Zf� G�H�h��x6 ef� G(�����x6 bf� Gh����x6 cf� G���X��x6 bf� G�)�$��x6 af� G(b��[�x6 )f� Gh�����x6 ff� G������x6 [f� G�
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00000520 00 00 1e 10 00 00 14 47 95 03 44 65 61 72 20 47 |.......G..Dear G|
00000530 65 6f 66 66 0a 41 66 74 65 72 20 72 65 61 64 69 |eoff.After readi|
00000540 6e 67 20 42 69 6c 6c 20 4c 61 6d 69 6e 27 73 20 |ng Bill Lamin's |
00000550 61 72 74 69 63 6c 65 20 27 54 75 72 62 6f 63 68 |article 'Turboch|
00000560 61 72 67 69 6e 67 20 74 68 65 20 6e 65 74 77 6f |arging the netwo|
00000570 72 6b 27 20 49 20 74 68 6f 75 67 68 74 20 74 68 |rk' I thought th|
00000580 61 74 20 77 65 20 68 61 64 20 61 20 6d 6f 72 65 |at we had a more|
00000590 20 72 65 66 69 6e 65 64 20 73 6f 6c 75 74 69 6f | refined solutio|
000005a0 6e 20 73 6f 20 49 20 68 61 76 65 20 65 6e 63 6c |n so I have encl|
000005b0 6f 73 65 64 20 61 6e 20 61 72 74 69 63 6c 65 20 |osed an article |
000005c0 66 6f 72 20 79 6f 75 72 20 70 65 72 75 73 61 6c |for your perusal|
000005d0 20 77 68 69 63 68 20 6d 61 79 20 62 65 20 6f 66 | which may be of|
000005e0 20 69 6e 74 65 72 65 73 74 20 74 6f 20 79 6f 75 | interest to you|
000005f0 72 20 72 65 61 64 65 72 73 2e 20 20 49 20 74 68 |r readers. I th|
00000600 69 6e 6b 20 74 68 61 74 20 74 68 69 73 20 77 6f |ink that this wo|
00000610 75 6c 64 20 70 72 6f 62 61 62 6c 79 20 62 65 20 |uld probably be |
00000620 6f 66 20 67 72 65 61 74 20 62 65 6e 65 66 69 74 |of great benefit|
00000630 20 74 6f 20 4d 72 2e 20 4c 61 6d 69 6e 20 6f 6e | to Mr. Lamin on|
00000640 20 68 69 73 20 6e 65 74 77 6f 72 6b 20 61 6e 64 | his network and|
00000650 20 77 65 20 77 69 6c 6c 20 73 65 6e 64 20 79 6f | we will send yo|
00000660 75 20 61 20 63 6f 70 79 20 6f 66 20 21 4e 65 74 |u a copy of !Net|
00000670 53 63 72 61 70 20 74 6f 20 70 75 74 20 6f 6e 20 |Scrap to put on |
00000680 74 68 65 20 64 69 73 63 20 69 66 20 79 6f 75 20 |the disc if you |
00000690 77 69 73 68 2e 20 20 48 6f 70 65 20 74 68 69 73 |wish. Hope this|
000006a0 20 69 73 20 4f 4b 20 61 6e 64 20 69 66 20 74 68 | is OK and if th|
000006b0 65 72 65 20 69 73 20 61 6e 79 74 68 69 6e 67 20 |ere is anything |
000006c0 65 6c 73 65 20 49 20 63 61 6e 20 64 6f 20 70 6c |else I can do pl|
000006d0 65 61 73 65 20 67 65 74 20 69 6e 20 74 6f 75 63 |ease get in touc|
000006e0 68 2e 0a 0a 41 6c 6c 61 6e 0a 0a 2d 2d 2d 2d 2d |h...Allan..-----|
000006f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
*
00000760 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 0a 4e 65 74 77 |----------..Netw|
00000770 6f 72 6b 20 47 54 49 20 20 20 20 20 12 f9 03 00 |ork GTI ....|
00000780 12 bb 6e 00 41 6c 6c 61 6e 20 4b 65 61 6c 65 79 |..n.Allan Kealey|
00000790 0a 0a 4c 69 6b 65 20 42 69 6c 6c 20 4c 61 6d 69 |..Like Bill Lami|
000007a0 6e 20 77 65 20 68 61 76 65 20 61 6c 73 6f 20 62 |n we have also b|
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000007e0 74 20 68 61 76 65 20 63 6f 6d 65 20 75 70 20 77 |t have come up w|
000007f0 69 74 68 20 61 20 64 69 66 66 65 72 65 6e 74 20 |ith a different |
00000800 61 70 70 72 6f 61 63 68 20 74 6f 20 74 68 65 20 |approach to the |
00000810 21 53 63 72 61 70 20 70 72 6f 62 6c 65 6d 2e 20 |!Scrap problem. |
00000820 20 49 20 64 69 64 20 6e 6f 74 20 72 65 6c 69 73 | I did not relis|
00000830 68 20 74 68 65 20 74 68 6f 75 67 68 74 20 6f 66 |h the thought of|
00000840 20 63 6f 70 79 69 6e 67 20 21 53 63 72 61 70 20 | copying !Scrap |
00000850 69 6e 74 6f 20 65 76 65 72 79 20 70 75 70 69 6c |into every pupil|
00000860 73 20 75 73 65 72 20 61 72 65 61 20 6f 6e 20 6f |s user area on o|
00000870 75 72 20 6e 65 74 77 6f 72 6b 20 61 6e 64 20 74 |ur network and t|
00000880 6f 79 65 64 20 77 69 74 68 20 73 65 76 65 72 61 |oyed with severa|
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000008e0 65 61 74 65 20 61 20 52 41 4d 20 64 69 73 63 20 |eate a RAM disc |
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00000900 68 69 6e 65 20 77 68 65 6e 20 74 68 61 74 20 6d |hine when that m|
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00000920 74 6f 20 74 68 65 20 6e 65 74 77 6f 72 6b 2e 20 |to the network. |
00000930 20 54 68 69 73 20 77 6f 75 6c 64 20 68 61 76 65 | This would have|
00000940 20 21 53 63 72 61 70 20 6c 6f 61 64 65 64 20 69 | !Scrap loaded i|
00000950 6e 74 6f 20 69 74 20 77 68 69 63 68 20 77 6f 75 |nto it which wou|
00000960 6c 64 20 74 68 65 6e 20 62 65 20 6d 6f 76 65 64 |ld then be moved|
00000970 20 6f 6e 20 74 6f 20 74 68 65 20 75 73 65 72 73 | on to the users|
00000980 20 6e 65 74 77 6f 72 6b 20 61 72 65 61 2e 20 20 | network area. |
00000990 54 68 69 73 20 73 65 65 6d 65 64 20 76 65 72 79 |This seemed very|
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000009b0 20 6e 6f 74 20 72 65 61 6c 6c 79 20 77 6f 72 74 | not really wort|
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000009d0 68 65 20 70 72 6f 63 65 73 73 20 74 68 61 74 20 |he process that |
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000009f0 6f 77 20 77 6f 72 6b 73 20 6f 6e 20 6f 75 72 20 |ow works on our |
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00000a10 20 74 6f 75 63 68 20 77 6f 6f 64 2c 20 6e 65 76 | touch wood, nev|
00000a20 65 72 20 63 61 75 73 65 64 20 61 6e 79 20 70 72 |er caused any pr|
00000a30 6f 62 6c 65 6d 73 20 61 74 20 61 6c 6c 21 0a 0a |oblems at all!..|
00000a40 54 68 65 20 4e 65 74 77 6f 72 6b 0a 4f 75 72 20 |The Network.Our |
00000a50 6e 65 74 77 6f 72 6b 20 68 61 73 20 61 20 6d 61 |network has a ma|
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00000a70 69 63 68 20 72 75 6e 73 20 4c 65 76 65 6c 20 34 |ich runs Level 4|
00000a80 2c 20 43 44 20 4e 65 74 20 49 49 20 61 6e 64 20 |, CD Net II and |
00000a90 21 4e 65 74 67 61 69 6e 2c 20 61 20 76 65 72 79 |!Netgain, a very|
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00000b40 6f 72 6b 20 76 61 72 69 6f 75 73 20 6d 61 6e 61 |ork various mana|
00000b50 67 65 6d 65 6e 74 20 69 73 73 75 65 73 20 61 72 |gement issues ar|
00000b60 65 20 64 65 61 6c 74 20 77 69 74 68 20 69 2e 65 |e dealt with i.e|
00000b70 2e 20 21 41 6c 61 72 6d 73 20 61 6e 64 20 21 43 |. !Alarms and !C|
00000b80 6f 6e 66 69 67 75 72 65 20 61 72 65 20 75 6e 70 |onfigure are unp|
00000b90 6c 75 67 67 65 64 2c 20 61 20 62 61 63 6b 64 72 |lugged, a backdr|
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00000bc0 6f 20 69 74 20 69 73 20 6c 6f 61 64 65 64 2c 20 |o it is loaded, |
00000bd0 74 68 65 20 66 6c 6f 70 70 79 20 64 69 73 63 20 |the floppy disc |
00000be0 69 63 6f 6e 20 69 73 20 72 65 6d 6f 76 65 64 20 |icon is removed |
00000bf0 66 72 6f 6d 20 74 68 65 20 69 63 6f 6e 20 62 61 |from the icon ba|
00000c00 72 20 61 6e 64 20 74 68 65 20 4e 65 74 67 61 69 |r and the Netgai|
00000c10 6e 20 6d 6f 64 75 6c 65 20 69 73 20 6c 6f 61 64 |n module is load|
00000c20 65 64 2e 20 20 54 68 69 73 20 65 6e 73 75 72 65 |ed. This ensure|
00000c30 73 20 74 68 61 74 20 74 68 65 72 65 20 61 72 65 |s that there are|
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00000c50 61 6d 65 73 20 65 74 63 20 74 6f 20 62 6f 74 68 |ames etc to both|
00000c60 65 72 20 61 62 6f 75 74 21 20 20 57 65 20 61 6c |er about! We al|
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00000c80 61 6e 73 66 65 72 20 73 65 72 76 69 63 65 20 66 |ansfer service f|
00000c90 6f 72 20 70 75 70 69 6c 73 20 77 68 6f 20 77 69 |or pupils who wi|
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00000cc0 61 69 6e 20 69 73 20 61 20 72 65 61 64 20 6f 6e |ain is a read on|
00000cd0 6c 79 20 66 69 6c 69 6e 67 20 73 79 73 74 65 6d |ly filing system|
00000ce0 20 61 6e 64 20 61 6c 6c 20 74 68 65 20 61 70 70 | and all the app|
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00000d00 68 65 20 70 75 70 69 6c 73 20 75 73 65 64 20 61 |he pupils used a|
00000d10 72 65 20 73 74 6f 72 65 64 20 69 6e 20 69 74 2e |re stored in it.|
00000d20 20 20 54 68 65 20 61 63 63 65 73 73 20 6d 6f 73 | The access mos|
00000d30 74 20 6f 66 20 74 68 65 73 65 20 70 72 6f 67 72 |t of these progr|
00000d40 61 6d 73 20 74 68 72 6f 75 67 68 20 74 68 65 20 |ams through the |
00000d50 41 70 70 73 20 66 6f 6c 64 65 72 20 6f 6e 20 74 |Apps folder on t|
00000d60 68 65 20 69 63 6f 6e 20 62 61 72 20 74 68 65 20 |he icon bar the |
00000d70 6d 6f 73 74 20 70 6f 70 75 6c 61 72 20 6f 6e 65 |most popular one|
00000d80 73 20 61 72 65 20 70 69 6e 6e 65 64 20 74 6f 20 |s are pinned to |
00000d90 74 68 65 20 62 61 63 6b 64 72 6f 70 20 74 6f 20 |the backdrop to |
00000da0 6d 61 6b 65 20 74 68 65 20 73 79 73 74 65 6d 20 |make the system |
00000db0 65 76 65 6e 20 65 61 73 69 65 72 20 74 6f 20 75 |even easier to u|
00000dc0 73 65 2e 20 20 57 65 20 6f 6e 6c 79 20 68 61 76 |se. We only hav|
00000dd0 65 20 37 30 30 20 75 73 65 72 73 20 62 75 74 20 |e 700 users but |
00000de0 77 65 20 71 75 69 63 6b 6c 79 20 72 65 61 6c 69 |we quickly reali|
00000df0 73 65 64 20 74 68 61 74 20 74 68 65 20 6d 65 6d |sed that the mem|
00000e00 6f 72 79 20 6f 76 65 72 68 65 61 64 73 20 66 72 |ory overheads fr|
00000e10 6f 6d 20 74 68 65 20 21 53 63 72 61 70 20 61 70 |om the !Scrap ap|
00000e20 70 6c 69 63 61 74 69 6f 6e 20 61 6c 6f 6e 65 20 |plication alone |
00000e30 77 61 73 20 6d 6f 72 65 20 74 68 61 6e 20 77 65 |was more than we|
00000e40 20 63 6f 75 6c 64 20 73 74 61 6e 64 20 70 6c 75 | could stand plu|
00000e50 73 20 77 65 20 61 6c 73 6f 20 63 6f 75 6c 64 20 |s we also could |
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00000e70 20 69 66 20 61 20 70 75 70 69 6c 20 64 65 6c 65 | if a pupil dele|
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00000e90 6e 74 20 61 70 70 6c 69 63 61 74 69 6f 6e 2e 20 |nt application. |
00000ea0 20 57 65 20 64 65 76 65 6c 6f 70 65 64 20 21 4e | We developed !N|
00000eb0 65 74 53 63 72 61 70 2e 0a 0a 21 4e 65 74 53 63 |etScrap...!NetSc|
00000ec0 72 61 70 0a 57 65 20 74 72 79 20 74 6f 20 72 75 |rap.We try to ru|
00000ed0 6e 20 61 20 74 69 64 79 20 6e 65 74 77 6f 72 6b |n a tidy network|
00000ee0 20 61 6e 64 20 66 65 65 6c 20 74 68 61 74 20 77 | and feel that w|
00000ef0 65 20 73 68 6f 75 6c 64 20 6c 65 61 64 20 62 79 |e should lead by|
00000f00 20 65 78 61 6d 70 6c 65 20 73 6f 20 77 65 20 6d | example so we m|
00000f10 61 6b 65 20 73 75 72 65 20 74 68 61 74 20 61 6c |ake sure that al|
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00000f30 6e 73 20 74 68 65 20 70 75 70 69 6c 73 20 75 73 |ns the pupils us|
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00000f50 69 6e 20 61 20 44 69 72 65 63 74 6f 72 79 20 74 |in a Directory t|
00000f60 72 65 65 20 69 2e 65 2e 20 61 6c 6c 20 74 68 65 |ree i.e. all the|
00000f70 20 57 6f 72 64 20 50 72 6f 63 65 73 73 6f 72 73 | Word Processors|
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*
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00001e15 
.