Home » Personal collection » Acorn ADFS disks » Greaseweazled » dfs_box04_disk02b_eug_scripts.adf » CAD/CADNew/+CAD2
CAD/CADNew/+CAD2
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 » Personal collection » Acorn ADFS disks » Greaseweazled » dfs_box04_disk02b_eug_scripts.adf |
| Filename: | CAD/CADNew/+CAD2 |
| Read OK: | ✔ |
| File size: | 186D bytes |
| Load address: | 2B206576 |
| Exec address: | 32444143 |
File contents
After working on a schematic for a while, you may find that you have placed a component in the wrong place. There may not be enough space to add part of the schematic, and in order to rectify the situation you need to move a few parts out of the way, or you may just want to tidy things up neatly. This is where the MOVE facility comes in useful. Click on the component you want to move, to bring up the "Object" menu, and select "Move". The status will change to "Moving", and the cursor will change to a flashing square. Move this square to the new location where you want to put the component, and click again. The part will now have been relocated, and any links automatically updated. If you place a component by accident, or want to remove one at a later date, you can do so using the "Delete" function on the object menu. This will remove the component and any links going to it. As your designs become more complex, you will soon find that the links start to look untidy. They are drawn as straight lines from the two terminals at each end, regardless of what might lie between them. This can cause the links to travel diagonally, which never looks neat, or even worse to cross another component. A simple solution is to define the path taken by the link using a series of nodes. Simply place a node at every corner along the route that you want the link to take, and link each to the next one along the line. INTEGRATED CIRCUITS One of the components available is the integrated circuit. This is different from the other components in that various sizes are avaiable. When you create an integrated cirsuit (ie. click on Add with IC selected at the top of the screen), you must select the size that you require from a menu. Most commonly used sizes are offered. When you click on an IC to bring up the "Object" menu, note that you must click at the TOP of the chip. This must be within the top three terminals on each side, and within the main body of the chip (ie. not on the terminals themselves). If you click elsewhere, it will not register as being a click on the IC. When you link to an IC, the sheer number of terminals makes it impossible to list all of them on a single menu. Therefore you must first select the range into which the terminal you want falls, and then select the exact number on a further menu. For example, to link to pin 4, first select "1-5" and then "4". FILING YOUR SCHEMATICS The File menu is available from both the object and main menus. It has the following items: New - Wipe your current design from memory and start with a fresh page. Open - Load a saved design from disc. Save - Save the current design to disc with the current filename. SaveAs - Save the current design to disc with a new filename. Export - Save the design in a format readable by other programs. Name - Sets the text description given at the top of the screen. MOS - Give you a * prompt with which to access the operating system. Exit - Quit the program and return to BASIC. Cancel - Oops again! The Open and SaveAs options both ask you for a filename and then load/save using that filename. The Save facility does not ask you for a filename, but instead uses the last filename used for this design. For example, if you load a file using Open and then want to save a modified version, you can use Save to avoid typing the filename for a second time. This facility is like that used by most modern PC software. NB: Filenames can be a maximum of 7 characters to ensure DFS compatibility. They are entered via a 7 character text box, as with the component labels (use cursor keys to move left/right; Delete won't work) The Export facility is used if you want to use your schematic in a document, or program other than Advanced CAD. You should note that the files made by Open/Save/SaveAs are data files that are of no use to any program other than Advanced CAD. In contrast, the files made by Export are graphics files, which are useful to other programs, but useless to Advanced CAD. For your information, these are mode 4 screendumps. The MOS facility is useful if you need to communicate with the operating system for any reason. This is necessary to switch filing systems (eg. from DFS to ADFS or vice versa), or to switch directories. NB: DO NOT use this to access to cassette filing system. The tape buffer is used by this program, and consequently any tape activity will crash the software. At the top of the screen there is a box which initially contains "<Untitled>". This box is intended as a 15 character description of what the current schematic is. You can edit the text that it contains using "Name" on the File menu. MEMORY LIMIT The memory limit in Advanced CAD is fairly generous: Maximum 127 components per schematic (includes nodes). Maximum 255 links between components. EXAMPLE FILES Two example files are supplied on this EUG disc - they can be accessed using "Open" on the file menu. They are as follows: Amp - An OpAmp set up as a non-inverting amplifier. PLL - A phase locked loop set up to act as a 410x frequency multiplier. FUTURE DEVELOPMENTS I have a number of ideas for improvements which I could make to Advamced CAD, and it is my intention to release a second version in a few months time. Features may include automatically making links look neat (avoid cutting components), and a larger list of components. If I can find the memory (and the time to do it!) I may even consider some simple PCB layout facilities. The main limiting factor in this version was the memory available, and so I will have to convert the entire program into machine code to make these ideas possible. One feature which is clearly lacking is an "Undo Link" function. Once you have linked two components, the only way to undo your link is to delete one of the components and then make a new one in its place. This can be a bit tedious with ICs, and so I recommend frequent saving. The reason for this ommision is simply lack of memory, and so this is my first priority in any future version. If you have any comments/ideas, please do pass them onto me, either via EUG or if you have the internet, to dominic.ford@cwcom.net Dominic Ford
00000000 41 66 74 65 72 20 77 6f 72 6b 69 6e 67 20 6f 6e |After working on| 00000010 20 61 20 73 63 68 65 6d 61 74 69 63 20 66 6f 72 | a schematic for| 00000020 20 61 20 77 68 69 6c 65 2c 20 79 6f 75 20 6d 61 | a while, you ma| 00000030 79 20 66 69 6e 64 20 74 68 61 74 20 79 6f 75 20 |y find that you | 00000040 68 61 76 65 0d 70 6c 61 63 65 64 20 61 20 63 6f |have.placed a co| 00000050 6d 70 6f 6e 65 6e 74 20 69 6e 20 74 68 65 20 77 |mponent in the w| 00000060 72 6f 6e 67 20 70 6c 61 63 65 2e 20 54 68 65 72 |rong place. Ther| 00000070 65 20 6d 61 79 20 6e 6f 74 20 62 65 20 65 6e 6f |e may not be eno| 00000080 75 67 68 20 73 70 61 63 65 20 74 6f 0d 61 64 64 |ugh space to.add| 00000090 20 70 61 72 74 20 6f 66 20 74 68 65 20 73 63 68 | part of the sch| 000000a0 65 6d 61 74 69 63 2c 20 61 6e 64 20 69 6e 20 6f |ematic, and in o| 000000b0 72 64 65 72 20 74 6f 20 72 65 63 74 69 66 79 20 |rder to rectify | 000000c0 74 68 65 20 73 69 74 75 61 74 69 6f 6e 20 79 6f |the situation yo| 000000d0 75 20 6e 65 65 64 0d 74 6f 20 6d 6f 76 65 20 61 |u need.to move a| 000000e0 20 66 65 77 20 70 61 72 74 73 20 6f 75 74 20 6f | few parts out o| 000000f0 66 20 74 68 65 20 77 61 79 2c 20 6f 72 20 79 6f |f the way, or yo| 00000100 75 20 6d 61 79 20 6a 75 73 74 20 77 61 6e 74 20 |u may just want | 00000110 74 6f 20 74 69 64 79 20 74 68 69 6e 67 73 20 75 |to tidy things u| 00000120 70 0d 6e 65 61 74 6c 79 2e 20 54 68 69 73 20 69 |p.neatly. This i| 00000130 73 20 77 68 65 72 65 20 74 68 65 20 4d 4f 56 45 |s where the MOVE| 00000140 20 66 61 63 69 6c 69 74 79 20 63 6f 6d 65 73 20 | facility comes | 00000150 69 6e 20 75 73 65 66 75 6c 2e 20 43 6c 69 63 6b |in useful. Click| 00000160 20 6f 6e 20 74 68 65 0d 63 6f 6d 70 6f 6e 65 6e | on the.componen| 00000170 74 20 79 6f 75 20 77 61 6e 74 20 74 6f 20 6d 6f |t you want to mo| 00000180 76 65 2c 20 74 6f 20 62 72 69 6e 67 20 75 70 20 |ve, to bring up | 00000190 74 68 65 20 22 4f 62 6a 65 63 74 22 20 6d 65 6e |the "Object" men| 000001a0 75 2c 20 61 6e 64 20 73 65 6c 65 63 74 0d 22 4d |u, and select."M| 000001b0 6f 76 65 22 2e 20 54 68 65 20 73 74 61 74 75 73 |ove". The status| 000001c0 20 77 69 6c 6c 20 63 68 61 6e 67 65 20 74 6f 20 | will change to | 000001d0 22 4d 6f 76 69 6e 67 22 2c 20 61 6e 64 20 74 68 |"Moving", and th| 000001e0 65 20 63 75 72 73 6f 72 20 77 69 6c 6c 20 63 68 |e cursor will ch| 000001f0 61 6e 67 65 20 74 6f 0d 61 20 66 6c 61 73 68 69 |ange to.a flashi| 00000200 6e 67 20 73 71 75 61 72 65 2e 20 4d 6f 76 65 20 |ng square. Move | 00000210 74 68 69 73 20 73 71 75 61 72 65 20 74 6f 20 74 |this square to t| 00000220 68 65 20 6e 65 77 20 6c 6f 63 61 74 69 6f 6e 20 |he new location | 00000230 77 68 65 72 65 20 79 6f 75 20 77 61 6e 74 20 74 |where you want t| 00000240 6f 0d 70 75 74 20 74 68 65 20 63 6f 6d 70 6f 6e |o.put the compon| 00000250 65 6e 74 2c 20 61 6e 64 20 63 6c 69 63 6b 20 61 |ent, and click a| 00000260 67 61 69 6e 2e 20 54 68 65 20 70 61 72 74 20 77 |gain. The part w| 00000270 69 6c 6c 20 6e 6f 77 20 68 61 76 65 20 62 65 65 |ill now have bee| 00000280 6e 20 72 65 6c 6f 63 61 74 65 64 2c 0d 61 6e 64 |n relocated,.and| 00000290 20 61 6e 79 20 6c 69 6e 6b 73 20 61 75 74 6f 6d | any links autom| 000002a0 61 74 69 63 61 6c 6c 79 20 75 70 64 61 74 65 64 |atically updated| 000002b0 2e 0d 0d 49 66 20 79 6f 75 20 70 6c 61 63 65 20 |...If you place | 000002c0 61 20 63 6f 6d 70 6f 6e 65 6e 74 20 62 79 20 61 |a component by a| 000002d0 63 63 69 64 65 6e 74 2c 20 6f 72 20 77 61 6e 74 |ccident, or want| 000002e0 20 74 6f 20 72 65 6d 6f 76 65 20 6f 6e 65 20 61 | to remove one a| 000002f0 74 20 61 20 6c 61 74 65 72 0d 64 61 74 65 2c 20 |t a later.date, | 00000300 79 6f 75 20 63 61 6e 20 64 6f 20 73 6f 20 75 73 |you can do so us| 00000310 69 6e 67 20 74 68 65 20 22 44 65 6c 65 74 65 22 |ing the "Delete"| 00000320 20 66 75 6e 63 74 69 6f 6e 20 6f 6e 20 74 68 65 | function on the| 00000330 20 6f 62 6a 65 63 74 20 6d 65 6e 75 2e 20 54 68 | object menu. Th| 00000340 69 73 0d 77 69 6c 6c 20 72 65 6d 6f 76 65 20 74 |is.will remove t| 00000350 68 65 20 63 6f 6d 70 6f 6e 65 6e 74 20 61 6e 64 |he component and| 00000360 20 61 6e 79 20 6c 69 6e 6b 73 20 67 6f 69 6e 67 | any links going| 00000370 20 74 6f 20 69 74 2e 0d 0d 41 73 20 79 6f 75 72 | to it...As your| 00000380 20 64 65 73 69 67 6e 73 20 62 65 63 6f 6d 65 20 | designs become | 00000390 6d 6f 72 65 20 63 6f 6d 70 6c 65 78 2c 20 79 6f |more complex, yo| 000003a0 75 20 77 69 6c 6c 20 73 6f 6f 6e 20 66 69 6e 64 |u will soon find| 000003b0 20 74 68 61 74 20 74 68 65 20 6c 69 6e 6b 73 0d | that the links.| 000003c0 73 74 61 72 74 20 74 6f 20 6c 6f 6f 6b 20 75 6e |start to look un| 000003d0 74 69 64 79 2e 20 54 68 65 79 20 61 72 65 20 64 |tidy. They are d| 000003e0 72 61 77 6e 20 61 73 20 73 74 72 61 69 67 68 74 |rawn as straight| 000003f0 20 6c 69 6e 65 73 20 66 72 6f 6d 20 74 68 65 20 | lines from the | 00000400 74 77 6f 0d 74 65 72 6d 69 6e 61 6c 73 20 61 74 |two.terminals at| 00000410 20 65 61 63 68 20 65 6e 64 2c 20 72 65 67 61 72 | each end, regar| 00000420 64 6c 65 73 73 20 6f 66 20 77 68 61 74 20 6d 69 |dless of what mi| 00000430 67 68 74 20 6c 69 65 20 62 65 74 77 65 65 6e 20 |ght lie between | 00000440 74 68 65 6d 2e 20 54 68 69 73 20 63 61 6e 0d 63 |them. This can.c| 00000450 61 75 73 65 20 74 68 65 20 6c 69 6e 6b 73 20 74 |ause the links t| 00000460 6f 20 74 72 61 76 65 6c 20 64 69 61 67 6f 6e 61 |o travel diagona| 00000470 6c 6c 79 2c 20 77 68 69 63 68 20 6e 65 76 65 72 |lly, which never| 00000480 20 6c 6f 6f 6b 73 20 6e 65 61 74 2c 20 6f 72 20 | looks neat, or | 00000490 65 76 65 6e 0d 77 6f 72 73 65 20 74 6f 20 63 72 |even.worse to cr| 000004a0 6f 73 73 20 61 6e 6f 74 68 65 72 20 63 6f 6d 70 |oss another comp| 000004b0 6f 6e 65 6e 74 2e 20 41 20 73 69 6d 70 6c 65 20 |onent. A simple | 000004c0 73 6f 6c 75 74 69 6f 6e 20 69 73 20 74 6f 20 64 |solution is to d| 000004d0 65 66 69 6e 65 20 74 68 65 20 70 61 74 68 0d 74 |efine the path.t| 000004e0 61 6b 65 6e 20 62 79 20 74 68 65 20 6c 69 6e 6b |aken by the link| 000004f0 20 75 73 69 6e 67 20 61 20 73 65 72 69 65 73 20 | using a series | 00000500 6f 66 20 6e 6f 64 65 73 2e 20 53 69 6d 70 6c 79 |of nodes. Simply| 00000510 20 70 6c 61 63 65 20 61 20 6e 6f 64 65 20 61 74 | place a node at| 00000520 20 65 76 65 72 79 0d 63 6f 72 6e 65 72 20 61 6c | every.corner al| 00000530 6f 6e 67 20 74 68 65 20 72 6f 75 74 65 20 74 68 |ong the route th| 00000540 61 74 20 79 6f 75 20 77 61 6e 74 20 74 68 65 20 |at you want the | 00000550 6c 69 6e 6b 20 74 6f 20 74 61 6b 65 2c 20 61 6e |link to take, an| 00000560 64 20 6c 69 6e 6b 20 65 61 63 68 20 74 6f 0d 74 |d link each to.t| 00000570 68 65 20 6e 65 78 74 20 6f 6e 65 20 61 6c 6f 6e |he next one alon| 00000580 67 20 74 68 65 20 6c 69 6e 65 2e 20 20 20 20 20 |g the line. | 00000590 20 20 20 20 20 20 0d 0d 49 4e 54 45 47 52 41 54 | ..INTEGRAT| 000005a0 45 44 20 43 49 52 43 55 49 54 53 0d 0d 4f 6e 65 |ED CIRCUITS..One| 000005b0 20 6f 66 20 74 68 65 20 63 6f 6d 70 6f 6e 65 6e | of the componen| 000005c0 74 73 20 61 76 61 69 6c 61 62 6c 65 20 69 73 20 |ts available is | 000005d0 74 68 65 20 69 6e 74 65 67 72 61 74 65 64 20 63 |the integrated c| 000005e0 69 72 63 75 69 74 2e 20 54 68 69 73 20 69 73 0d |ircuit. This is.| 000005f0 64 69 66 66 65 72 65 6e 74 20 66 72 6f 6d 20 74 |different from t| 00000600 68 65 20 6f 74 68 65 72 20 63 6f 6d 70 6f 6e 65 |he other compone| 00000610 6e 74 73 20 69 6e 20 74 68 61 74 20 76 61 72 69 |nts in that vari| 00000620 6f 75 73 20 73 69 7a 65 73 20 61 72 65 20 61 76 |ous sizes are av| 00000630 61 69 61 62 6c 65 2e 0d 57 68 65 6e 20 79 6f 75 |aiable..When you| 00000640 20 63 72 65 61 74 65 20 61 6e 20 69 6e 74 65 67 | create an integ| 00000650 72 61 74 65 64 20 63 69 72 73 75 69 74 20 28 69 |rated cirsuit (i| 00000660 65 2e 20 63 6c 69 63 6b 20 6f 6e 20 41 64 64 20 |e. click on Add | 00000670 77 69 74 68 20 49 43 20 73 65 6c 65 63 74 65 64 |with IC selected| 00000680 0d 61 74 20 74 68 65 20 74 6f 70 20 6f 66 20 74 |.at the top of t| 00000690 68 65 20 73 63 72 65 65 6e 29 2c 20 79 6f 75 20 |he screen), you | 000006a0 6d 75 73 74 20 73 65 6c 65 63 74 20 74 68 65 20 |must select the | 000006b0 73 69 7a 65 20 74 68 61 74 20 79 6f 75 20 72 65 |size that you re| 000006c0 71 75 69 72 65 20 66 72 6f 6d 0d 61 20 6d 65 6e |quire from.a men| 000006d0 75 2e 20 4d 6f 73 74 20 63 6f 6d 6d 6f 6e 6c 79 |u. Most commonly| 000006e0 20 75 73 65 64 20 73 69 7a 65 73 20 61 72 65 20 | used sizes are | 000006f0 6f 66 66 65 72 65 64 2e 0d 0d 57 68 65 6e 20 79 |offered...When y| 00000700 6f 75 20 63 6c 69 63 6b 20 6f 6e 20 61 6e 20 49 |ou click on an I| 00000710 43 20 74 6f 20 62 72 69 6e 67 20 75 70 20 74 68 |C to bring up th| 00000720 65 20 22 4f 62 6a 65 63 74 22 20 6d 65 6e 75 2c |e "Object" menu,| 00000730 20 6e 6f 74 65 20 74 68 61 74 20 79 6f 75 20 6d | note that you m| 00000740 75 73 74 0d 63 6c 69 63 6b 20 61 74 20 74 68 65 |ust.click at the| 00000750 20 54 4f 50 20 6f 66 20 74 68 65 20 63 68 69 70 | TOP of the chip| 00000760 2e 20 54 68 69 73 20 6d 75 73 74 20 62 65 20 77 |. This must be w| 00000770 69 74 68 69 6e 20 74 68 65 20 74 6f 70 20 74 68 |ithin the top th| 00000780 72 65 65 20 74 65 72 6d 69 6e 61 6c 73 0d 6f 6e |ree terminals.on| 00000790 20 65 61 63 68 20 73 69 64 65 2c 20 61 6e 64 20 | each side, and | 000007a0 77 69 74 68 69 6e 20 74 68 65 20 6d 61 69 6e 20 |within the main | 000007b0 62 6f 64 79 20 6f 66 20 74 68 65 20 63 68 69 70 |body of the chip| 000007c0 20 28 69 65 2e 20 6e 6f 74 20 6f 6e 20 74 68 65 | (ie. not on the| 000007d0 0d 74 65 72 6d 69 6e 61 6c 73 20 74 68 65 6d 73 |.terminals thems| 000007e0 65 6c 76 65 73 29 2e 20 49 66 20 79 6f 75 20 63 |elves). If you c| 000007f0 6c 69 63 6b 20 65 6c 73 65 77 68 65 72 65 2c 20 |lick elsewhere, | 00000800 69 74 20 77 69 6c 6c 20 6e 6f 74 20 72 65 67 69 |it will not regi| 00000810 73 74 65 72 20 61 73 0d 62 65 69 6e 67 20 61 20 |ster as.being a | 00000820 63 6c 69 63 6b 20 6f 6e 20 74 68 65 20 49 43 2e |click on the IC.| 00000830 0d 0d 57 68 65 6e 20 79 6f 75 20 6c 69 6e 6b 20 |..When you link | 00000840 74 6f 20 61 6e 20 49 43 2c 20 74 68 65 20 73 68 |to an IC, the sh| 00000850 65 65 72 20 6e 75 6d 62 65 72 20 6f 66 20 74 65 |eer number of te| 00000860 72 6d 69 6e 61 6c 73 20 6d 61 6b 65 73 20 69 74 |rminals makes it| 00000870 20 69 6d 70 6f 73 73 69 62 6c 65 0d 74 6f 20 6c | impossible.to l| 00000880 69 73 74 20 61 6c 6c 20 6f 66 20 74 68 65 6d 20 |ist all of them | 00000890 6f 6e 20 61 20 73 69 6e 67 6c 65 20 6d 65 6e 75 |on a single menu| 000008a0 2e 20 54 68 65 72 65 66 6f 72 65 20 79 6f 75 20 |. Therefore you | 000008b0 6d 75 73 74 20 66 69 72 73 74 20 73 65 6c 65 63 |must first selec| 000008c0 74 20 74 68 65 0d 72 61 6e 67 65 20 69 6e 74 6f |t the.range into| 000008d0 20 77 68 69 63 68 20 74 68 65 20 74 65 72 6d 69 | which the termi| 000008e0 6e 61 6c 20 79 6f 75 20 77 61 6e 74 20 66 61 6c |nal you want fal| 000008f0 6c 73 2c 20 61 6e 64 20 74 68 65 6e 20 73 65 6c |ls, and then sel| 00000900 65 63 74 20 74 68 65 20 65 78 61 63 74 0d 6e 75 |ect the exact.nu| 00000910 6d 62 65 72 20 6f 6e 20 61 20 66 75 72 74 68 65 |mber on a furthe| 00000920 72 20 6d 65 6e 75 2e 20 46 6f 72 20 65 78 61 6d |r menu. For exam| 00000930 70 6c 65 2c 20 74 6f 20 6c 69 6e 6b 20 74 6f 20 |ple, to link to | 00000940 70 69 6e 20 34 2c 20 66 69 72 73 74 20 73 65 6c |pin 4, first sel| 00000950 65 63 74 0d 22 31 2d 35 22 20 61 6e 64 20 74 68 |ect."1-5" and th| 00000960 65 6e 20 22 34 22 2e 0d 0d 46 49 4c 49 4e 47 20 |en "4"...FILING | 00000970 59 4f 55 52 20 53 43 48 45 4d 41 54 49 43 53 0d |YOUR SCHEMATICS.| 00000980 0d 54 68 65 20 46 69 6c 65 20 6d 65 6e 75 20 69 |.The File menu i| 00000990 73 20 61 76 61 69 6c 61 62 6c 65 20 66 72 6f 6d |s available from| 000009a0 20 62 6f 74 68 20 74 68 65 20 6f 62 6a 65 63 74 | both the object| 000009b0 20 61 6e 64 20 6d 61 69 6e 20 6d 65 6e 75 73 2e | and main menus.| 000009c0 20 49 74 20 68 61 73 20 74 68 65 0d 66 6f 6c 6c | It has the.foll| 000009d0 6f 77 69 6e 67 20 69 74 65 6d 73 3a 0d 0d 4e 65 |owing items:..Ne| 000009e0 77 20 2d 20 57 69 70 65 20 79 6f 75 72 20 63 75 |w - Wipe your cu| 000009f0 72 72 65 6e 74 20 64 65 73 69 67 6e 20 66 72 6f |rrent design fro| 00000a00 6d 20 6d 65 6d 6f 72 79 20 61 6e 64 20 73 74 61 |m memory and sta| 00000a10 72 74 20 77 69 74 68 20 61 20 66 72 65 73 68 20 |rt with a fresh | 00000a20 70 61 67 65 2e 0d 4f 70 65 6e 20 2d 20 4c 6f 61 |page..Open - Loa| 00000a30 64 20 61 20 73 61 76 65 64 20 64 65 73 69 67 6e |d a saved design| 00000a40 20 66 72 6f 6d 20 64 69 73 63 2e 0d 53 61 76 65 | from disc..Save| 00000a50 20 2d 20 53 61 76 65 20 74 68 65 20 63 75 72 72 | - Save the curr| 00000a60 65 6e 74 20 64 65 73 69 67 6e 20 74 6f 20 64 69 |ent design to di| 00000a70 73 63 20 77 69 74 68 20 74 68 65 20 63 75 72 72 |sc with the curr| 00000a80 65 6e 74 20 66 69 6c 65 6e 61 6d 65 2e 0d 53 61 |ent filename..Sa| 00000a90 76 65 41 73 20 2d 20 53 61 76 65 20 74 68 65 20 |veAs - Save the | 00000aa0 63 75 72 72 65 6e 74 20 64 65 73 69 67 6e 20 74 |current design t| 00000ab0 6f 20 64 69 73 63 20 77 69 74 68 20 61 20 6e 65 |o disc with a ne| 00000ac0 77 20 66 69 6c 65 6e 61 6d 65 2e 0d 45 78 70 6f |w filename..Expo| 00000ad0 72 74 20 2d 20 53 61 76 65 20 74 68 65 20 64 65 |rt - Save the de| 00000ae0 73 69 67 6e 20 69 6e 20 61 20 66 6f 72 6d 61 74 |sign in a format| 00000af0 20 72 65 61 64 61 62 6c 65 20 62 79 20 6f 74 68 | readable by oth| 00000b00 65 72 20 70 72 6f 67 72 61 6d 73 2e 0d 4e 61 6d |er programs..Nam| 00000b10 65 20 2d 20 53 65 74 73 20 74 68 65 20 74 65 78 |e - Sets the tex| 00000b20 74 20 64 65 73 63 72 69 70 74 69 6f 6e 20 67 69 |t description gi| 00000b30 76 65 6e 20 61 74 20 74 68 65 20 74 6f 70 20 6f |ven at the top o| 00000b40 66 20 74 68 65 20 73 63 72 65 65 6e 2e 0d 4d 4f |f the screen..MO| 00000b50 53 20 2d 20 47 69 76 65 20 79 6f 75 20 61 20 2a |S - Give you a *| 00000b60 20 70 72 6f 6d 70 74 20 77 69 74 68 20 77 68 69 | prompt with whi| 00000b70 63 68 20 74 6f 20 61 63 63 65 73 73 20 74 68 65 |ch to access the| 00000b80 20 6f 70 65 72 61 74 69 6e 67 20 73 79 73 74 65 | operating syste| 00000b90 6d 2e 0d 45 78 69 74 20 2d 20 51 75 69 74 20 74 |m..Exit - Quit t| 00000ba0 68 65 20 70 72 6f 67 72 61 6d 20 61 6e 64 20 72 |he program and r| 00000bb0 65 74 75 72 6e 20 74 6f 20 42 41 53 49 43 2e 0d |eturn to BASIC..| 00000bc0 43 61 6e 63 65 6c 20 2d 20 4f 6f 70 73 20 61 67 |Cancel - Oops ag| 00000bd0 61 69 6e 21 0d 0d 54 68 65 20 4f 70 65 6e 20 61 |ain!..The Open a| 00000be0 6e 64 20 53 61 76 65 41 73 20 6f 70 74 69 6f 6e |nd SaveAs option| 00000bf0 73 20 62 6f 74 68 20 61 73 6b 20 79 6f 75 20 66 |s both ask you f| 00000c00 6f 72 20 61 20 66 69 6c 65 6e 61 6d 65 20 61 6e |or a filename an| 00000c10 64 20 74 68 65 6e 20 6c 6f 61 64 2f 73 61 76 65 |d then load/save| 00000c20 0d 75 73 69 6e 67 20 74 68 61 74 20 66 69 6c 65 |.using that file| 00000c30 6e 61 6d 65 2e 20 54 68 65 20 53 61 76 65 20 66 |name. The Save f| 00000c40 61 63 69 6c 69 74 79 20 64 6f 65 73 20 6e 6f 74 |acility does not| 00000c50 20 61 73 6b 20 79 6f 75 20 66 6f 72 20 61 20 66 | ask you for a f| 00000c60 69 6c 65 6e 61 6d 65 2c 0d 62 75 74 20 69 6e 73 |ilename,.but ins| 00000c70 74 65 61 64 20 75 73 65 73 20 74 68 65 20 6c 61 |tead uses the la| 00000c80 73 74 20 66 69 6c 65 6e 61 6d 65 20 75 73 65 64 |st filename used| 00000c90 20 66 6f 72 20 74 68 69 73 20 64 65 73 69 67 6e | for this design| 00000ca0 2e 20 46 6f 72 20 65 78 61 6d 70 6c 65 2c 20 69 |. For example, i| 00000cb0 66 0d 79 6f 75 20 6c 6f 61 64 20 61 20 66 69 6c |f.you load a fil| 00000cc0 65 20 75 73 69 6e 67 20 4f 70 65 6e 20 61 6e 64 |e using Open and| 00000cd0 20 74 68 65 6e 20 77 61 6e 74 20 74 6f 20 73 61 | then want to sa| 00000ce0 76 65 20 61 20 6d 6f 64 69 66 69 65 64 20 76 65 |ve a modified ve| 00000cf0 72 73 69 6f 6e 2c 20 79 6f 75 0d 63 61 6e 20 75 |rsion, you.can u| 00000d00 73 65 20 53 61 76 65 20 74 6f 20 61 76 6f 69 64 |se Save to avoid| 00000d10 20 74 79 70 69 6e 67 20 74 68 65 20 66 69 6c 65 | typing the file| 00000d20 6e 61 6d 65 20 66 6f 72 20 61 20 73 65 63 6f 6e |name for a secon| 00000d30 64 20 74 69 6d 65 2e 20 54 68 69 73 20 66 61 63 |d time. This fac| 00000d40 69 6c 69 74 79 0d 69 73 20 6c 69 6b 65 20 74 68 |ility.is like th| 00000d50 61 74 20 75 73 65 64 20 62 79 20 6d 6f 73 74 20 |at used by most | 00000d60 6d 6f 64 65 72 6e 20 50 43 20 73 6f 66 74 77 61 |modern PC softwa| 00000d70 72 65 2e 20 20 20 20 20 20 20 20 20 20 20 20 20 |re. | 00000d80 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000d90 0d 0d 4e 42 3a 20 46 69 6c 65 6e 61 6d 65 73 20 |..NB: Filenames | 00000da0 63 61 6e 20 62 65 20 61 20 6d 61 78 69 6d 75 6d |can be a maximum| 00000db0 20 6f 66 20 37 20 63 68 61 72 61 63 74 65 72 73 | of 7 characters| 00000dc0 20 74 6f 20 65 6e 73 75 72 65 20 44 46 53 0d 63 | to ensure DFS.c| 00000dd0 6f 6d 70 61 74 69 62 69 6c 69 74 79 2e 20 54 68 |ompatibility. Th| 00000de0 65 79 20 61 72 65 20 65 6e 74 65 72 65 64 20 76 |ey are entered v| 00000df0 69 61 20 61 20 37 20 63 68 61 72 61 63 74 65 72 |ia a 7 character| 00000e00 20 74 65 78 74 20 62 6f 78 2c 20 61 73 20 77 69 | text box, as wi| 00000e10 74 68 20 74 68 65 0d 63 6f 6d 70 6f 6e 65 6e 74 |th the.component| 00000e20 20 6c 61 62 65 6c 73 20 28 75 73 65 20 63 75 72 | labels (use cur| 00000e30 73 6f 72 20 6b 65 79 73 20 74 6f 20 6d 6f 76 65 |sor keys to move| 00000e40 20 6c 65 66 74 2f 72 69 67 68 74 3b 20 44 65 6c | left/right; Del| 00000e50 65 74 65 20 77 6f 6e 27 74 20 77 6f 72 6b 29 0d |ete won't work).| 00000e60 0d 54 68 65 20 45 78 70 6f 72 74 20 66 61 63 69 |.The Export faci| 00000e70 6c 69 74 79 20 69 73 20 75 73 65 64 20 69 66 20 |lity is used if | 00000e80 79 6f 75 20 77 61 6e 74 20 74 6f 20 75 73 65 20 |you want to use | 00000e90 79 6f 75 72 20 73 63 68 65 6d 61 74 69 63 20 69 |your schematic i| 00000ea0 6e 20 61 0d 64 6f 63 75 6d 65 6e 74 2c 20 6f 72 |n a.document, or| 00000eb0 20 70 72 6f 67 72 61 6d 20 6f 74 68 65 72 20 74 | program other t| 00000ec0 68 61 6e 20 41 64 76 61 6e 63 65 64 20 43 41 44 |han Advanced CAD| 00000ed0 2e 20 59 6f 75 20 73 68 6f 75 6c 64 20 6e 6f 74 |. 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The | 00001770 72 65 61 73 6f 6e 20 66 6f 72 0d 74 68 69 73 20 |reason for.this | 00001780 6f 6d 6d 69 73 69 6f 6e 20 69 73 20 73 69 6d 70 |ommision is simp| 00001790 6c 79 20 6c 61 63 6b 20 6f 66 20 6d 65 6d 6f 72 |ly lack of memor| 000017a0 79 2c 20 61 6e 64 20 73 6f 20 74 68 69 73 20 69 |y, and so this i| 000017b0 73 20 6d 79 20 66 69 72 73 74 20 70 72 69 6f 72 |s my first prior| 000017c0 69 74 79 0d 69 6e 20 61 6e 79 20 66 75 74 75 72 |ity.in any futur| 000017d0 65 20 76 65 72 73 69 6f 6e 2e 0d 0d 49 66 20 79 |e version...If y| 000017e0 6f 75 20 68 61 76 65 20 61 6e 79 20 63 6f 6d 6d |ou have any comm| 000017f0 65 6e 74 73 2f 69 64 65 61 73 2c 20 70 6c 65 61 |ents/ideas, plea| 00001800 73 65 20 64 6f 20 70 61 73 73 20 74 68 65 6d 20 |se do pass them | 00001810 6f 6e 74 6f 20 6d 65 2c 20 65 69 74 68 65 72 20 |onto me, either | 00001820 76 69 61 0d 45 55 47 20 6f 72 20 69 66 20 79 6f |via.EUG or if yo| 00001830 75 20 68 61 76 65 20 74 68 65 20 69 6e 74 65 72 |u have the inter| 00001840 6e 65 74 2c 20 74 6f 20 64 6f 6d 69 6e 69 63 2e |net, to dominic.| 00001850 66 6f 72 64 40 63 77 63 6f 6d 2e 6e 65 74 0d 0d |ford@cwcom.net..| 00001860 44 6f 6d 69 6e 69 63 20 46 6f 72 64 0d |Dominic Ford.| 0000186d
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