Home » Archimedes archive » Acorn User » AU 1997-06 B.adf » Extras » RiscUtils/!RuInstall/Install/!Help/Help/Text/Help/PC-NoClose
RiscUtils/!RuInstall/Install/!Help/Help/Text/Help/PC-NoClose
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 1997-06 B.adf » Extras |
| Filename: | RiscUtils/!RuInstall/Install/!Help/Help/Text/Help/PC-NoClose |
| Read OK: | ✔ |
| File size: | 089E bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Prevent_Close_&_Shut_Commands_When_PCcard_Is_Running : This is one of my most useful components /programs, as the name suggests it prevents the *Shut and *Close commands from being carried out when the PC Card is running on the same machine. Why would you want to stop these commands from being carried out? The problem is this : If the user wants to get in to a PC partition from RISC OS, while running the PC card, he/she is told "Error when reading Drive_C - This file has been left open from a previous operation" (i.e. the PC card is using it). Then, thinking they were clever typed in *Shut or *Close at the command line, so as to get in. Once having done what they need to in the PC partition, they go back in to the PC card to find it's crashed, taking all the unsaved work with it. This happens because issuing the shut command effectivly removes the PC partition�s HardDisc which obviously causes problems when it starts looking for a harddisc that is no longer there. Of course the user can try and simply remember not to type in *Shut or *Close at the command line to get in to a partition, but it is often possible to forget that the PC card is running, or for the Icon Bar to be covered, and it sod's law that the time this does happen, is the time when there is/was lots of unsaved work open in the PC Card. What this component does is re-route the *Shut and *Close commands, so that every time they are issued, the computer checks (using a modified version of If_Task -see the help file 'If_Task') to see if the PC card is running. If it isn�t a normal *Shut or *Close command (as appropriate) is carried out. But if it is, then a warning pops up, telling you not to issue the *Shut and *Close commands when the PC card is running, and the *Shut or *Close command is not actually carried out. Which means the PC card doesn�t crash, and your work is not lost. To activate the component simply run 'RISCutils', with the 'Prevent_Close_&_Shut_Commands_When_PCcard_Is_Running' option in RISCutil's !Run file set to 'Y'. To de-activate it run the file RISCutils.User_Area.Files.Remove, and run 'RISCutils', with the 'Prevent_Close_&_Shut_Command_When_ PCcard_Is_Running' option set to 'N.'
00000000 0a 50 72 65 76 65 6e 74 5f 43 6c 6f 73 65 5f 26 |.Prevent_Close_&| 00000010 5f 53 68 75 74 5f 43 6f 6d 6d 61 6e 64 73 5f 57 |_Shut_Commands_W| 00000020 68 65 6e 5f 50 43 63 61 72 64 5f 49 73 5f 52 75 |hen_PCcard_Is_Ru| 00000030 6e 6e 69 6e 67 20 3a 20 54 68 69 73 20 69 73 20 |nning : This is | 00000040 6f 6e 65 20 6f 66 20 6d 79 20 6d 6f 73 74 20 75 |one of my most u| 00000050 73 65 66 75 6c 20 63 6f 6d 70 6f 6e 65 6e 74 73 |seful components| 00000060 20 2f 70 72 6f 67 72 61 6d 73 2c 20 61 73 20 74 | /programs, as t| 00000070 68 65 20 6e 61 6d 65 20 73 75 67 67 65 73 74 73 |he name suggests| 00000080 20 69 74 20 70 72 65 76 65 6e 74 73 20 74 68 65 | it prevents the| 00000090 20 2a 53 68 75 74 20 61 6e 64 20 2a 43 6c 6f 73 | *Shut and *Clos| 000000a0 65 20 63 6f 6d 6d 61 6e 64 73 20 66 72 6f 6d 20 |e commands from | 000000b0 62 65 69 6e 67 20 63 61 72 72 69 65 64 20 6f 75 |being carried ou| 000000c0 74 20 77 68 65 6e 20 74 68 65 20 50 43 20 43 61 |t when the PC Ca| 000000d0 72 64 20 69 73 20 72 75 6e 6e 69 6e 67 20 6f 6e |rd is running on| 000000e0 20 74 68 65 20 73 61 6d 65 20 6d 61 63 68 69 6e | the same machin| 000000f0 65 2e 20 0a 0a 57 68 79 20 77 6f 75 6c 64 20 79 |e. ..Why would y| 00000100 6f 75 20 77 61 6e 74 20 74 6f 20 73 74 6f 70 20 |ou want to stop | 00000110 74 68 65 73 65 20 63 6f 6d 6d 61 6e 64 73 20 66 |these commands f| 00000120 72 6f 6d 20 62 65 69 6e 67 20 63 61 72 72 69 65 |rom being carrie| 00000130 64 20 6f 75 74 3f 20 54 68 65 20 70 72 6f 62 6c |d out? The probl| 00000140 65 6d 20 69 73 20 74 68 69 73 20 3a 20 49 66 20 |em is this : If | 00000150 74 68 65 20 75 73 65 72 20 77 61 6e 74 73 20 74 |the user wants t| 00000160 6f 20 67 65 74 20 69 6e 20 74 6f 20 61 20 50 43 |o get in to a PC| 00000170 20 70 61 72 74 69 74 69 6f 6e 20 66 72 6f 6d 20 | partition from | 00000180 52 49 53 43 20 4f 53 2c 20 77 68 69 6c 65 20 72 |RISC OS, while r| 00000190 75 6e 6e 69 6e 67 20 74 68 65 20 50 43 20 63 61 |unning the PC ca| 000001a0 72 64 2c 20 68 65 2f 73 68 65 20 69 73 20 74 6f |rd, he/she is to| 000001b0 6c 64 20 22 45 72 72 6f 72 20 77 68 65 6e 20 72 |ld "Error when r| 000001c0 65 61 64 69 6e 67 20 44 72 69 76 65 5f 43 20 2d |eading Drive_C -| 000001d0 20 54 68 69 73 20 66 69 6c 65 20 68 61 73 20 62 | This file has b| 000001e0 65 65 6e 20 6c 65 66 74 20 6f 70 65 6e 20 66 72 |een left open fr| 000001f0 6f 6d 20 61 20 70 72 65 76 69 6f 75 73 20 6f 70 |om a previous op| 00000200 65 72 61 74 69 6f 6e 22 20 28 69 2e 65 2e 20 74 |eration" (i.e. t| 00000210 68 65 20 50 43 20 63 61 72 64 20 69 73 20 75 73 |he PC card is us| 00000220 69 6e 67 20 69 74 29 2e 20 54 68 65 6e 2c 20 74 |ing it). Then, t| 00000230 68 69 6e 6b 69 6e 67 20 74 68 65 79 20 77 65 72 |hinking they wer| 00000240 65 20 63 6c 65 76 65 72 20 74 79 70 65 64 20 69 |e clever typed i| 00000250 6e 20 2a 53 68 75 74 20 6f 72 20 2a 43 6c 6f 73 |n *Shut or *Clos| 00000260 65 20 61 74 20 74 68 65 20 63 6f 6d 6d 61 6e 64 |e at the command| 00000270 20 6c 69 6e 65 2c 20 73 6f 20 61 73 20 74 6f 20 | line, so as to | 00000280 67 65 74 20 69 6e 2e 20 4f 6e 63 65 20 68 61 76 |get in. Once hav| 00000290 69 6e 67 20 64 6f 6e 65 20 77 68 61 74 20 74 68 |ing done what th| 000002a0 65 79 20 6e 65 65 64 20 74 6f 20 69 6e 20 74 68 |ey need to in th| 000002b0 65 20 50 43 20 70 61 72 74 69 74 69 6f 6e 2c 20 |e PC partition, | 000002c0 74 68 65 79 20 67 6f 20 62 61 63 6b 20 69 6e 20 |they go back in | 000002d0 74 6f 20 74 68 65 20 50 43 20 63 61 72 64 20 74 |to the PC card t| 000002e0 6f 20 66 69 6e 64 20 69 74 27 73 20 63 72 61 73 |o find it's cras| 000002f0 68 65 64 2c 20 74 61 6b 69 6e 67 20 61 6c 6c 20 |hed, taking all | 00000300 74 68 65 20 75 6e 73 61 76 65 64 20 77 6f 72 6b |the unsaved work| 00000310 20 77 69 74 68 20 69 74 2e 20 54 68 69 73 20 68 | with it. This h| 00000320 61 70 70 65 6e 73 20 62 65 63 61 75 73 65 20 69 |appens because i| 00000330 73 73 75 69 6e 67 20 74 68 65 20 73 68 75 74 20 |ssuing the shut | 00000340 63 6f 6d 6d 61 6e 64 20 65 66 66 65 63 74 69 76 |command effectiv| 00000350 6c 79 20 72 65 6d 6f 76 65 73 20 74 68 65 20 50 |ly removes the P| 00000360 43 20 70 61 72 74 69 74 69 6f 6e 91 73 20 48 61 |C partition.s Ha| 00000370 72 64 44 69 73 63 20 77 68 69 63 68 20 6f 62 76 |rdDisc which obv| 00000380 69 6f 75 73 6c 79 20 63 61 75 73 65 73 20 70 72 |iously causes pr| 00000390 6f 62 6c 65 6d 73 20 77 68 65 6e 20 69 74 20 73 |oblems when it s| 000003a0 74 61 72 74 73 20 6c 6f 6f 6b 69 6e 67 20 66 6f |tarts looking fo| 000003b0 72 20 61 20 68 61 72 64 64 69 73 63 20 74 68 61 |r a harddisc tha| 000003c0 74 20 69 73 20 6e 6f 20 6c 6f 6e 67 65 72 20 74 |t is no longer t| 000003d0 68 65 72 65 2e 20 4f 66 20 63 6f 75 72 73 65 20 |here. Of course | 000003e0 74 68 65 20 75 73 65 72 20 63 61 6e 20 74 72 79 |the user can try| 000003f0 20 61 6e 64 20 73 69 6d 70 6c 79 20 72 65 6d 65 | and simply reme| 00000400 6d 62 65 72 20 6e 6f 74 20 74 6f 20 74 79 70 65 |mber not to type| 00000410 20 69 6e 20 2a 53 68 75 74 20 6f 72 20 2a 43 6c | in *Shut or *Cl| 00000420 6f 73 65 20 61 74 20 74 68 65 20 63 6f 6d 6d 61 |ose at the comma| 00000430 6e 64 20 6c 69 6e 65 20 74 6f 20 67 65 74 20 69 |nd line to get i| 00000440 6e 20 74 6f 20 61 20 70 61 72 74 69 74 69 6f 6e |n to a partition| 00000450 2c 20 62 75 74 20 69 74 20 69 73 20 6f 66 74 65 |, but it is ofte| 00000460 6e 20 70 6f 73 73 69 62 6c 65 20 74 6f 20 66 6f |n possible to fo| 00000470 72 67 65 74 20 74 68 61 74 20 74 68 65 20 50 43 |rget that the PC| 00000480 20 63 61 72 64 20 69 73 20 72 75 6e 6e 69 6e 67 | card is running| 00000490 2c 20 6f 72 20 66 6f 72 20 74 68 65 20 49 63 6f |, or for the Ico| 000004a0 6e 20 42 61 72 20 74 6f 20 62 65 20 63 6f 76 65 |n Bar to be cove| 000004b0 72 65 64 2c 20 61 6e 64 20 69 74 20 73 6f 64 27 |red, and it sod'| 000004c0 73 20 6c 61 77 20 74 68 61 74 20 74 68 65 20 74 |s law that the t| 000004d0 69 6d 65 20 74 68 69 73 20 64 6f 65 73 20 68 61 |ime this does ha| 000004e0 70 70 65 6e 2c 20 69 73 20 74 68 65 20 74 69 6d |ppen, is the tim| 000004f0 65 20 77 68 65 6e 20 74 68 65 72 65 20 69 73 2f |e when there is/| 00000500 77 61 73 20 6c 6f 74 73 20 6f 66 20 75 6e 73 61 |was lots of unsa| 00000510 76 65 64 20 77 6f 72 6b 20 6f 70 65 6e 20 69 6e |ved work open in| 00000520 20 74 68 65 20 50 43 20 43 61 72 64 2e 0a 0a 57 | the PC Card...W| 00000530 68 61 74 20 74 68 69 73 20 63 6f 6d 70 6f 6e 65 |hat this compone| 00000540 6e 74 20 64 6f 65 73 20 69 73 20 72 65 2d 72 6f |nt does is re-ro| 00000550 75 74 65 20 74 68 65 20 2a 53 68 75 74 20 61 6e |ute the *Shut an| 00000560 64 20 2a 43 6c 6f 73 65 20 63 6f 6d 6d 61 6e 64 |d *Close command| 00000570 73 2c 20 73 6f 20 74 68 61 74 20 65 76 65 72 79 |s, so that every| 00000580 20 74 69 6d 65 20 74 68 65 79 20 61 72 65 20 69 | time they are i| 00000590 73 73 75 65 64 2c 20 74 68 65 20 63 6f 6d 70 75 |ssued, the compu| 000005a0 74 65 72 20 63 68 65 63 6b 73 20 28 75 73 69 6e |ter checks (usin| 000005b0 67 20 61 20 6d 6f 64 69 66 69 65 64 20 76 65 72 |g a modified ver| 000005c0 73 69 6f 6e 20 6f 66 20 49 66 5f 54 61 73 6b 20 |sion of If_Task | 000005d0 2d 73 65 65 20 74 68 65 20 68 65 6c 70 20 66 69 |-see the help fi| 000005e0 6c 65 20 27 49 66 5f 54 61 73 6b 27 29 20 74 6f |le 'If_Task') to| 000005f0 20 73 65 65 20 69 66 20 74 68 65 20 50 43 20 63 | see if the PC c| 00000600 61 72 64 20 69 73 20 72 75 6e 6e 69 6e 67 2e 20 |ard is running. | 00000610 49 66 20 69 74 20 69 73 6e 91 74 20 61 20 6e 6f |If it isn.t a no| 00000620 72 6d 61 6c 20 2a 53 68 75 74 20 6f 72 20 2a 43 |rmal *Shut or *C| 00000630 6c 6f 73 65 20 63 6f 6d 6d 61 6e 64 20 28 61 73 |lose command (as| 00000640 20 61 70 70 72 6f 70 72 69 61 74 65 29 20 69 73 | appropriate) is| 00000650 20 63 61 72 72 69 65 64 20 6f 75 74 2e 20 42 75 | carried out. Bu| 00000660 74 20 69 66 20 69 74 20 69 73 2c 20 74 68 65 6e |t if it is, then| 00000670 20 61 20 77 61 72 6e 69 6e 67 20 70 6f 70 73 20 | a warning pops | 00000680 75 70 2c 20 74 65 6c 6c 69 6e 67 20 79 6f 75 20 |up, telling you | 00000690 6e 6f 74 20 74 6f 20 69 73 73 75 65 20 74 68 65 |not to issue the| 000006a0 20 2a 53 68 75 74 20 61 6e 64 20 2a 43 6c 6f 73 | *Shut and *Clos| 000006b0 65 20 63 6f 6d 6d 61 6e 64 73 20 77 68 65 6e 20 |e commands when | 000006c0 74 68 65 20 50 43 20 63 61 72 64 20 69 73 20 72 |the PC card is r| 000006d0 75 6e 6e 69 6e 67 2c 20 61 6e 64 20 74 68 65 20 |unning, and the | 000006e0 2a 53 68 75 74 20 6f 72 20 2a 43 6c 6f 73 65 20 |*Shut or *Close | 000006f0 63 6f 6d 6d 61 6e 64 20 69 73 20 6e 6f 74 20 61 |command is not a| 00000700 63 74 75 61 6c 6c 79 20 63 61 72 72 69 65 64 20 |ctually carried | 00000710 6f 75 74 2e 20 57 68 69 63 68 20 6d 65 61 6e 73 |out. Which means| 00000720 20 74 68 65 20 50 43 20 63 61 72 64 20 64 6f 65 | the PC card doe| 00000730 73 6e 91 74 20 63 72 61 73 68 2c 20 61 6e 64 20 |sn.t crash, and | 00000740 79 6f 75 72 20 77 6f 72 6b 20 69 73 20 6e 6f 74 |your work is not| 00000750 20 6c 6f 73 74 2e 0a 0a 54 6f 20 61 63 74 69 76 | lost...To activ| 00000760 61 74 65 20 74 68 65 20 63 6f 6d 70 6f 6e 65 6e |ate the componen| 00000770 74 20 73 69 6d 70 6c 79 20 72 75 6e 20 27 52 49 |t simply run 'RI| 00000780 53 43 75 74 69 6c 73 27 2c 20 77 69 74 68 20 74 |SCutils', with t| 00000790 68 65 20 27 50 72 65 76 65 6e 74 5f 43 6c 6f 73 |he 'Prevent_Clos| 000007a0 65 5f 26 5f 53 68 75 74 5f 43 6f 6d 6d 61 6e 64 |e_&_Shut_Command| 000007b0 73 5f 57 68 65 6e 5f 50 43 63 61 72 64 5f 49 73 |s_When_PCcard_Is| 000007c0 5f 52 75 6e 6e 69 6e 67 27 20 6f 70 74 69 6f 6e |_Running' option| 000007d0 20 69 6e 20 52 49 53 43 75 74 69 6c 27 73 20 21 | in RISCutil's !| 000007e0 52 75 6e 20 66 69 6c 65 20 73 65 74 20 74 6f 20 |Run file set to | 000007f0 27 59 27 2e 20 54 6f 20 64 65 2d 61 63 74 69 76 |'Y'. To de-activ| 00000800 61 74 65 20 69 74 20 72 75 6e 20 74 68 65 20 66 |ate it run the f| 00000810 69 6c 65 20 52 49 53 43 75 74 69 6c 73 2e 55 73 |ile RISCutils.Us| 00000820 65 72 5f 41 72 65 61 2e 46 69 6c 65 73 2e 52 65 |er_Area.Files.Re| 00000830 6d 6f 76 65 2c 20 61 6e 64 20 72 75 6e 20 27 52 |move, and run 'R| 00000840 49 53 43 75 74 69 6c 73 27 2c 20 77 69 74 68 20 |ISCutils', with | 00000850 74 68 65 20 27 50 72 65 76 65 6e 74 5f 43 6c 6f |the 'Prevent_Clo| 00000860 73 65 5f 26 5f 53 68 75 74 5f 43 6f 6d 6d 61 6e |se_&_Shut_Comman| 00000870 64 5f 57 68 65 6e 5f 20 50 43 63 61 72 64 5f 49 |d_When_ PCcard_I| 00000880 73 5f 52 75 6e 6e 69 6e 67 27 20 6f 70 74 69 6f |s_Running' optio| 00000890 6e 20 73 65 74 20 74 6f 20 27 4e 2e 27 0a |n set to 'N.'.| 0000089e
.