Home » Personal collection » Acorn ADFS disks » Greaseweazled » dfs_box04_disk02b_eug_scripts.adf » CAD/CADNew/I2
CAD/CADNew/I2
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/I2 |
| Read OK: | ✔ |
| File size: | 13E7 bytes |
| Load address: | 0000 |
| Exec address: | FFFFFFFF |
File contents
After working on a schematic for a while, you may find that you have placed a component in the wrong place. There is not 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. 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. 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. 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 20 70 6c 61 63 65 64 20 61 0d 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 69 73 20 6e 6f 74 20 65 6e 6f 75 67 68 20 |e is not enough | 00000080 73 70 61 63 65 20 74 6f 20 61 64 64 20 70 61 72 |space to add par| 00000090 74 20 6f 66 20 74 68 65 0d 73 63 68 65 6d 61 74 |t of the.schemat| 000000a0 69 63 2c 20 61 6e 64 20 69 6e 20 6f 72 64 65 72 |ic, and in order| 000000b0 20 74 6f 20 72 65 63 74 69 66 79 20 74 68 65 20 | to rectify the | 000000c0 73 69 74 75 61 74 69 6f 6e 20 79 6f 75 20 6e 65 |situation you ne| 000000d0 65 64 20 74 6f 20 6d 6f 76 65 20 61 20 66 65 77 |ed to move a few| 000000e0 20 70 61 72 74 73 0d 6f 75 74 20 6f 66 20 74 68 | parts.out of th| 000000f0 65 20 77 61 79 2e 20 54 68 69 73 20 69 73 20 77 |e way. This is w| 00000100 68 65 72 65 20 74 68 65 20 4d 4f 56 45 20 66 61 |here the MOVE fa| 00000110 63 69 6c 69 74 79 20 63 6f 6d 65 73 20 69 6e 20 |cility comes in | 00000120 75 73 65 66 75 6c 2e 20 43 6c 69 63 6b 20 6f 6e |useful. Click on| 00000130 20 74 68 65 0d 63 6f 6d 70 6f 6e 65 6e 74 20 79 | the.component y| 00000140 6f 75 20 77 61 6e 74 20 74 6f 20 6d 6f 76 65 2c |ou want to move,| 00000150 20 74 6f 20 62 72 69 6e 67 20 75 70 20 74 68 65 | to bring up the| 00000160 20 22 4f 62 6a 65 63 74 22 20 6d 65 6e 75 2c 20 | "Object" menu, | 00000170 61 6e 64 20 73 65 6c 65 63 74 20 22 4d 6f 76 65 |and select "Move| 00000180 22 2e 0d 54 68 65 20 73 74 61 74 75 73 20 77 69 |"..The status wi| 00000190 6c 6c 20 63 68 61 6e 67 65 20 74 6f 20 22 4d 6f |ll change to "Mo| 000001a0 76 69 6e 67 22 2c 20 61 6e 64 20 74 68 65 20 63 |ving", and the c| 000001b0 75 72 73 6f 72 20 77 69 6c 6c 20 63 68 61 6e 67 |ursor will chang| 000001c0 65 20 74 6f 20 61 20 66 6c 61 73 68 69 6e 67 0d |e to a flashing.| 000001d0 73 71 75 61 72 65 2e 20 4d 6f 76 65 20 74 68 69 |square. Move thi| 000001e0 73 20 73 71 75 61 72 65 20 74 6f 20 74 68 65 20 |s square to the | 000001f0 6e 65 77 20 6c 6f 63 61 74 69 6f 6e 20 77 68 65 |new location whe| 00000200 72 65 20 79 6f 75 20 77 61 6e 74 20 74 6f 20 70 |re you want to p| 00000210 75 74 20 74 68 65 0d 63 6f 6d 70 6f 6e 65 6e 74 |ut the.component| 00000220 2c 20 61 6e 64 20 63 6c 69 63 6b 20 61 67 61 69 |, and click agai| 00000230 6e 2e 20 54 68 65 20 70 61 72 74 20 77 69 6c 6c |n. The part will| 00000240 20 6e 6f 77 20 68 61 76 65 20 62 65 65 6e 20 72 | now have been r| 00000250 65 6c 6f 63 61 74 65 64 2c 20 61 6e 64 20 61 6e |elocated, and an| 00000260 79 0d 6c 69 6e 6b 73 20 61 75 74 6f 6d 61 74 69 |y.links automati| 00000270 63 61 6c 6c 79 20 75 70 64 61 74 65 64 2e 0d 0d |cally updated...| 00000280 49 66 20 79 6f 75 20 70 6c 61 63 65 20 61 20 63 |If you place a c| 00000290 6f 6d 70 6f 6e 65 6e 74 20 62 79 20 61 63 63 69 |omponent by acci| 000002a0 64 65 6e 74 2c 20 6f 72 20 77 61 6e 74 20 74 6f |dent, or want to| 000002b0 20 72 65 6d 6f 76 65 20 6f 6e 65 20 61 74 20 61 | remove one at a| 000002c0 20 6c 61 74 65 72 20 64 61 74 65 2c 0d 79 6f 75 | later date,.you| 000002d0 20 63 61 6e 20 64 6f 20 73 6f 20 75 73 69 6e 67 | can do so using| 000002e0 20 74 68 65 20 22 44 65 6c 65 74 65 22 20 66 75 | the "Delete" fu| 000002f0 6e 63 74 69 6f 6e 20 6f 6e 20 74 68 65 20 6f 62 |nction on the ob| 00000300 6a 65 63 74 20 6d 65 6e 75 2e 20 54 68 69 73 20 |ject menu. This | 00000310 77 69 6c 6c 20 72 65 6d 6f 76 65 0d 74 68 65 20 |will remove.the | 00000320 63 6f 6d 70 6f 6e 65 6e 74 20 61 6e 64 20 61 6e |component and an| 00000330 79 20 6c 69 6e 6b 73 20 67 6f 69 6e 67 20 74 6f |y links going to| 00000340 20 69 74 2e 0d 0d 41 73 20 79 6f 75 72 20 64 65 | it...As your de| 00000350 73 69 67 6e 73 20 62 65 63 6f 6d 65 20 6d 6f 72 |signs become mor| 00000360 65 20 63 6f 6d 70 6c 65 78 2c 20 79 6f 75 20 77 |e complex, you w| 00000370 69 6c 6c 20 73 6f 6f 6e 20 66 69 6e 64 20 74 68 |ill soon find th| 00000380 61 74 20 74 68 65 20 6c 69 6e 6b 73 20 73 74 61 |at the links sta| 00000390 72 74 20 74 6f 0d 6c 6f 6f 6b 20 75 6e 74 69 64 |rt to.look untid| 000003a0 79 2e 20 54 68 65 79 20 61 72 65 20 64 72 61 77 |y. They are draw| 000003b0 6e 20 61 73 20 73 74 72 61 69 67 68 74 20 6c 69 |n as straight li| 000003c0 6e 65 73 20 66 72 6f 6d 20 74 68 65 20 74 77 6f |nes from the two| 000003d0 20 74 65 72 6d 69 6e 61 6c 73 20 61 74 20 65 61 | terminals at ea| 000003e0 63 68 0d 65 6e 64 2c 20 72 65 67 61 72 64 6c 65 |ch.end, regardle| 000003f0 73 73 20 6f 66 20 77 68 61 74 20 6d 69 67 68 74 |ss of what might| 00000400 20 6c 69 65 20 62 65 74 77 65 65 6e 20 74 68 65 | lie between the| 00000410 6d 2e 20 54 68 69 73 20 63 61 6e 20 63 61 75 73 |m. This can caus| 00000420 65 20 74 68 65 20 6c 69 6e 6b 73 20 74 6f 0d 74 |e the links to.t| 00000430 72 61 76 65 6c 20 64 69 61 67 6f 6e 61 6c 6c 79 |ravel diagonally| 00000440 2c 20 77 68 69 63 68 20 6e 65 76 65 72 20 6c 6f |, which never lo| 00000450 6f 6b 73 20 6e 65 61 74 2c 20 6f 72 20 65 76 65 |oks neat, or eve| 00000460 6e 20 77 6f 72 73 65 20 74 6f 20 63 72 6f 73 73 |n worse to cross| 00000470 20 61 6e 6f 74 68 65 72 0d 63 6f 6d 70 6f 6e 65 | another.compone| 00000480 6e 74 2e 20 41 20 73 69 6d 70 6c 65 20 73 6f 6c |nt. A simple sol| 00000490 75 74 69 6f 6e 20 69 73 20 74 6f 20 64 65 66 69 |ution is to defi| 000004a0 6e 65 20 74 68 65 20 70 61 74 68 20 74 61 6b 65 |ne the path take| 000004b0 6e 20 62 79 20 74 68 65 20 6c 69 6e 6b 20 75 73 |n by the link us| 000004c0 69 6e 67 20 61 0d 73 65 72 69 65 73 20 6f 66 20 |ing a.series of | 000004d0 6e 6f 64 65 73 2e 20 53 69 6d 70 6c 79 20 70 6c |nodes. Simply pl| 000004e0 61 63 65 20 61 20 6e 6f 64 65 20 61 74 20 65 76 |ace a node at ev| 000004f0 65 72 79 20 63 6f 72 6e 65 72 20 61 6c 6f 6e 67 |ery corner along| 00000500 20 74 68 65 20 72 6f 75 74 65 20 74 68 61 74 20 | the route that | 00000510 79 6f 75 0d 77 61 6e 74 20 74 68 65 20 6c 69 6e |you.want the lin| 00000520 6b 20 74 6f 20 74 61 6b 65 2c 20 61 6e 64 20 6c |k to take, and l| 00000530 69 6e 6b 20 65 61 63 68 20 74 6f 20 74 68 65 20 |ink each to the | 00000540 6e 65 78 74 20 6f 6e 65 20 61 6c 6f 6e 67 20 74 |next one along t| 00000550 68 65 20 6c 69 6e 65 2e 20 20 20 20 20 20 20 20 |he line. | 00000560 20 20 20 0d 0d 46 49 4c 49 4e 47 20 59 4f 55 52 | ..FILING YOUR| 00000570 20 53 43 48 45 4d 41 54 49 43 53 0d 0d 54 68 65 | SCHEMATICS..The| 00000580 20 46 69 6c 65 20 6d 65 6e 75 20 69 73 20 61 76 | File menu is av| 00000590 61 69 6c 61 62 6c 65 20 66 72 6f 6d 20 62 6f 74 |ailable from bot| 000005a0 68 20 74 68 65 20 6f 62 6a 65 63 74 20 61 6e 64 |h the object and| 000005b0 20 6d 61 69 6e 20 6d 65 6e 75 73 2e 20 49 74 20 | main menus. It | 000005c0 68 61 73 20 74 68 65 0d 66 6f 6c 6c 6f 77 69 6e |has the.followin| 000005d0 67 20 69 74 65 6d 73 3a 0d 0d 4e 65 77 20 2d 20 |g items:..New - | 000005e0 57 69 70 65 20 79 6f 75 72 20 63 75 72 72 65 6e |Wipe your curren| 000005f0 74 20 64 65 73 69 67 6e 20 66 72 6f 6d 20 6d 65 |t design from me| 00000600 6d 6f 72 79 20 61 6e 64 20 73 74 61 72 74 20 77 |mory and start w| 00000610 69 74 68 20 61 20 66 72 65 73 68 20 70 61 67 65 |ith a fresh page| 00000620 2e 0d 4f 70 65 6e 20 2d 20 4c 6f 61 64 20 61 20 |..Open - Load a | 00000630 73 61 76 65 64 20 64 65 73 69 67 6e 20 66 72 6f |saved design fro| 00000640 6d 20 64 69 73 63 2e 0d 53 61 76 65 20 2d 20 53 |m disc..Save - S| 00000650 61 76 65 20 74 68 65 20 63 75 72 72 65 6e 74 20 |ave the current | 00000660 64 65 73 69 67 6e 20 74 6f 20 64 69 73 63 20 77 |design to disc w| 00000670 69 74 68 20 74 68 65 20 63 75 72 72 65 6e 74 20 |ith the current | 00000680 66 69 6c 65 6e 61 6d 65 2e 0d 53 61 76 65 41 73 |filename..SaveAs| 00000690 20 2d 20 53 61 76 65 20 74 68 65 20 63 75 72 72 | - Save the curr| 000006a0 65 6e 74 20 64 65 73 69 67 6e 20 74 6f 20 64 69 |ent design to di| 000006b0 73 63 20 77 69 74 68 20 61 20 6e 65 77 20 66 69 |sc with a new fi| 000006c0 6c 65 6e 61 6d 65 2e 0d 45 78 70 6f 72 74 20 2d |lename..Export -| 000006d0 20 53 61 76 65 20 74 68 65 20 64 65 73 69 67 6e | Save the design| 000006e0 20 69 6e 20 61 20 66 6f 72 6d 61 74 20 72 65 61 | in a format rea| 000006f0 64 61 62 6c 65 20 62 79 20 6f 74 68 65 72 20 70 |dable by other p| 00000700 72 6f 67 72 61 6d 73 2e 0d 4e 61 6d 65 20 2d 20 |rograms..Name - | 00000710 53 65 74 73 20 74 68 65 20 74 65 78 74 20 64 65 |Sets the text de| 00000720 73 63 72 69 70 74 69 6f 6e 20 67 69 76 65 6e 20 |scription given | 00000730 61 74 20 74 68 65 20 74 6f 70 20 6f 66 20 74 68 |at the top of th| 00000740 65 20 73 63 72 65 65 6e 2e 0d 4d 4f 53 20 2d 20 |e screen..MOS - | 00000750 47 69 76 65 20 79 6f 75 20 61 20 2a 20 70 72 6f |Give you a * pro| 00000760 6d 70 74 20 77 69 74 68 20 77 68 69 63 68 20 74 |mpt with which t| 00000770 6f 20 61 63 63 65 73 73 20 74 68 65 20 6f 70 65 |o access the ope| 00000780 72 61 74 69 6e 67 20 73 79 73 74 65 6d 2e 0d 45 |rating system..E| 00000790 78 69 74 20 2d 20 51 75 69 74 20 74 68 65 20 70 |xit - Quit the p| 000007a0 72 6f 67 72 61 6d 20 61 6e 64 20 72 65 74 75 72 |rogram and retur| 000007b0 6e 20 74 6f 20 42 41 53 49 43 2e 0d 43 61 6e 63 |n to BASIC..Canc| 000007c0 65 6c 20 2d 20 4f 6f 70 73 20 61 67 61 69 6e 21 |el - Oops again!| 000007d0 0d 0d 54 68 65 20 4f 70 65 6e 20 61 6e 64 20 53 |..The Open and S| 000007e0 61 76 65 41 73 20 6f 70 74 69 6f 6e 73 20 62 6f |aveAs options bo| 000007f0 74 68 20 61 73 6b 20 79 6f 75 20 66 6f 72 20 61 |th ask you for a| 00000800 20 66 69 6c 65 6e 61 6d 65 20 61 6e 64 20 74 68 | filename and th| 00000810 65 6e 20 6c 6f 61 64 2f 73 61 76 65 0d 75 73 69 |en load/save.usi| 00000820 6e 67 20 74 68 61 74 20 66 69 6c 65 6e 61 6d 65 |ng that filename| 00000830 2e 20 54 68 65 20 53 61 76 65 20 66 61 63 69 6c |. The Save facil| 00000840 69 74 79 20 64 6f 65 73 20 6e 6f 74 20 61 73 6b |ity does not ask| 00000850 20 79 6f 75 20 66 6f 72 20 61 20 66 69 6c 65 6e | you for a filen| 00000860 61 6d 65 2c 20 62 75 74 0d 69 6e 73 74 65 61 64 |ame, but.instead| 00000870 20 75 73 65 73 20 74 68 65 20 6c 61 73 74 20 66 | uses the last f| 00000880 69 6c 65 6e 61 6d 65 20 75 73 65 64 20 66 6f 72 |ilename used for| 00000890 20 74 68 69 73 20 64 65 73 69 67 6e 2e 20 46 6f | this design. Fo| 000008a0 72 20 65 78 61 6d 70 6c 65 2c 20 69 66 20 79 6f |r example, if yo| 000008b0 75 20 6c 6f 61 64 0d 61 20 66 69 6c 65 20 75 73 |u load.a file us| 000008c0 69 6e 67 20 4f 70 65 6e 20 61 6e 64 20 74 68 65 |ing Open and the| 000008d0 6e 20 77 61 6e 74 20 74 6f 20 73 61 76 65 20 61 |n want to save a| 000008e0 20 6d 6f 64 69 66 69 65 64 20 76 65 72 73 69 6f | modified versio| 000008f0 6e 2c 20 79 6f 75 20 63 61 6e 20 75 73 65 20 53 |n, you can use S| 00000900 61 76 65 0d 74 6f 20 61 76 6f 69 64 20 74 79 70 |ave.to avoid typ| 00000910 69 6e 67 20 74 68 65 20 66 69 6c 65 6e 61 6d 65 |ing the filename| 00000920 20 66 6f 72 20 61 20 73 65 63 6f 6e 64 20 74 69 | for a second ti| 00000930 6d 65 2e 20 54 68 69 73 20 66 61 63 69 6c 69 74 |me. This facilit| 00000940 79 20 69 73 20 6c 69 6b 65 20 74 68 61 74 20 75 |y is like that u| 00000950 73 65 64 0d 62 79 20 6d 6f 73 74 20 6d 6f 64 65 |sed.by most mode| 00000960 72 6e 20 50 43 20 73 6f 66 74 77 61 72 65 2e 20 |rn PC software. | 00000970 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000980 20 20 20 20 20 20 20 20 20 20 20 20 0d 0d 4e 42 | ..NB| 00000990 3a 20 46 69 6c 65 6e 61 6d 65 73 20 63 61 6e 20 |: Filenames can | 000009a0 62 65 20 61 20 6d 61 78 69 6d 75 6d 20 6f 66 20 |be a maximum of | 000009b0 37 20 63 68 61 72 61 63 74 65 72 73 20 74 6f 20 |7 characters to | 000009c0 65 6e 73 75 72 65 20 44 46 53 20 63 6f 6d 70 61 |ensure DFS compa| 000009d0 74 69 62 69 6c 69 74 79 2e 0d 0d 54 68 65 20 45 |tibility...The E| 000009e0 78 70 6f 72 74 20 66 61 63 69 6c 69 74 79 20 69 |xport facility i| 000009f0 73 20 75 73 65 64 20 69 66 20 79 6f 75 20 77 61 |s used if you wa| 00000a00 6e 74 20 74 6f 20 75 73 65 20 79 6f 75 72 20 73 |nt to use your s| 00000a10 63 68 65 6d 61 74 69 63 20 69 6e 20 61 20 64 6f |chematic in a do| 00000a20 63 75 6d 65 6e 74 2c 20 6f 72 0d 70 72 6f 67 72 |cument, or.progr| 00000a30 61 6d 20 6f 74 68 65 72 20 74 68 61 6e 20 41 64 |am other than Ad| 00000a40 76 61 6e 63 65 64 20 43 41 44 2e 20 59 6f 75 20 |vanced CAD. You | 00000a50 73 68 6f 75 6c 64 20 6e 6f 74 65 20 74 68 61 74 |should note that| 00000a60 20 74 68 65 20 66 69 6c 65 73 20 6d 61 64 65 20 | the files made | 00000a70 62 79 0d 4f 70 65 6e 2f 53 61 76 65 2f 53 61 76 |by.Open/Save/Sav| 00000a80 65 41 73 20 61 72 65 20 64 61 74 61 20 66 69 6c |eAs are data fil| 00000a90 65 73 20 74 68 61 74 20 61 72 65 20 6f 66 20 6e |es that are of n| 00000aa0 6f 20 75 73 65 20 74 6f 20 61 6e 79 20 70 72 6f |o use to any pro| 00000ab0 67 72 61 6d 20 6f 74 68 65 72 20 74 68 61 6e 0d |gram other than.| 00000ac0 41 64 76 61 6e 63 65 64 20 43 41 44 2e 20 49 6e |Advanced CAD. In| 00000ad0 20 63 6f 6e 74 72 61 73 74 2c 20 74 68 65 20 66 | contrast, the f| 00000ae0 69 6c 65 73 20 6d 61 64 65 20 62 79 20 45 78 70 |iles made by Exp| 00000af0 6f 72 74 20 61 72 65 20 67 72 61 70 68 69 63 73 |ort are graphics| 00000b00 20 66 69 6c 65 73 2c 20 77 68 69 63 68 0d 61 72 | files, which.ar| 00000b10 65 20 75 73 65 66 75 6c 20 74 6f 20 6f 74 68 65 |e useful to othe| 00000b20 72 20 70 72 6f 67 72 61 6d 73 2c 20 62 75 74 20 |r programs, but | 00000b30 75 73 65 6c 65 73 73 20 74 6f 20 41 64 76 61 6e |useless to Advan| 00000b40 63 65 64 20 43 41 44 2e 20 46 6f 72 20 79 6f 75 |ced CAD. For you| 00000b50 72 0d 69 6e 66 6f 72 6d 61 74 69 6f 6e 2c 20 74 |r.information, t| 00000b60 68 65 73 65 20 61 72 65 20 6d 6f 64 65 20 34 20 |hese are mode 4 | 00000b70 73 63 72 65 65 6e 64 75 6d 70 73 2e 0d 0d 54 68 |screendumps...Th| 00000b80 65 20 4d 4f 53 20 66 61 63 69 6c 69 74 79 20 69 |e MOS facility i| 00000b90 73 20 75 73 65 66 75 6c 20 69 66 20 79 6f 75 20 |s useful if you | 00000ba0 6e 65 65 64 20 74 6f 20 63 6f 6d 6d 75 6e 69 63 |need to communic| 00000bb0 61 74 65 20 77 69 74 68 20 74 68 65 20 6f 70 65 |ate with the ope| 00000bc0 72 61 74 69 6e 67 20 73 79 73 74 65 6d 0d 66 6f |rating system.fo| 00000bd0 72 20 61 6e 79 20 72 65 61 73 6f 6e 2e 20 54 68 |r any reason. Th| 00000be0 69 73 20 69 73 20 6e 65 63 65 73 73 61 72 79 20 |is is necessary | 00000bf0 74 6f 20 73 77 69 74 63 68 20 66 69 6c 69 6e 67 |to switch filing| 00000c00 20 73 79 73 74 65 6d 73 20 28 65 67 2e 20 66 72 | systems (eg. fr| 00000c10 6f 6d 20 44 46 53 20 74 6f 0d 41 44 46 53 20 6f |om DFS to.ADFS o| 00000c20 72 20 76 69 63 65 20 76 65 72 73 61 29 2c 20 6f |r vice versa), o| 00000c30 72 20 74 6f 20 73 77 69 74 63 68 20 64 69 72 65 |r to switch dire| 00000c40 63 74 6f 72 69 65 73 2e 20 20 20 20 20 20 20 20 |ctories. | 00000c50 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000c60 20 20 20 20 20 20 20 20 20 0d 0d 4e 42 3a 20 44 | ..NB: D| 00000c70 4f 20 4e 4f 54 20 75 73 65 20 74 68 69 73 20 74 |O NOT use this t| 00000c80 6f 20 61 63 63 65 73 73 20 74 6f 20 63 61 73 73 |o access to cass| 00000c90 65 74 74 65 20 66 69 6c 69 6e 67 20 73 79 73 74 |ette filing syst| 00000ca0 65 6d 2e 20 54 68 65 20 74 61 70 65 20 62 75 66 |em. The tape buf| 00000cb0 66 65 72 20 69 73 0d 75 73 65 64 20 62 79 20 74 |fer is.used by t| 00000cc0 68 69 73 20 70 72 6f 67 72 61 6d 2c 20 61 6e 64 |his program, and| 00000cd0 20 63 6f 6e 73 65 71 75 65 6e 74 6c 79 20 61 6e | consequently an| 00000ce0 79 20 74 61 70 65 20 61 63 74 69 76 69 74 79 20 |y tape activity | 00000cf0 77 69 6c 6c 20 63 72 61 73 68 20 74 68 65 0d 73 |will crash the.s| 00000d00 6f 66 74 77 61 72 65 2e 0d 0d 41 74 20 74 68 65 |oftware...At the| 00000d10 20 74 6f 70 20 6f 66 20 74 68 65 20 73 63 72 65 | top of the scre| 00000d20 65 6e 20 74 68 65 72 65 20 69 73 20 61 20 62 6f |en there is a bo| 00000d30 78 20 77 68 69 63 68 20 69 6e 69 74 69 61 6c 6c |x which initiall| 00000d40 79 20 63 6f 6e 74 61 69 6e 73 20 22 3c 55 6e 74 |y contains "<Unt| 00000d50 69 74 6c 65 64 3e 22 2e 0d 54 68 69 73 20 62 6f |itled>"..This bo| 00000d60 78 20 69 73 20 69 6e 74 65 6e 64 65 64 20 61 73 |x is intended as| 00000d70 20 61 20 31 35 20 63 68 61 72 61 63 74 65 72 20 | a 15 character | 00000d80 64 65 73 63 72 69 70 74 69 6f 6e 20 6f 66 20 77 |description of w| 00000d90 68 61 74 20 74 68 65 20 63 75 72 72 65 6e 74 0d |hat the current.| 00000da0 73 63 68 65 6d 61 74 69 63 20 69 73 2e 20 59 6f |schematic is. Yo| 00000db0 75 20 63 61 6e 20 65 64 69 74 20 74 68 65 20 74 |u can edit the t| 00000dc0 65 78 74 20 74 68 61 74 20 69 74 20 63 6f 6e 74 |ext that it cont| 00000dd0 61 69 6e 73 20 75 73 69 6e 67 20 22 4e 61 6d 65 |ains using "Name| 00000de0 22 20 6f 6e 20 74 68 65 20 46 69 6c 65 0d 6d 65 |" on the File.me| 00000df0 6e 75 2e 0d 0d 4d 45 4d 4f 52 59 20 4c 49 4d 49 |nu...MEMORY LIMI| 00000e00 54 0d 0d 54 68 65 20 6d 65 6d 6f 72 79 20 6c 69 |T..The memory li| 00000e10 6d 69 74 20 69 6e 20 41 64 76 61 6e 63 65 64 20 |mit in Advanced | 00000e20 43 41 44 20 69 73 20 66 61 69 72 6c 79 20 67 65 |CAD is fairly ge| 00000e30 6e 65 72 6f 75 73 3a 0d 0d 4d 61 78 69 6d 75 6d |nerous:..Maximum| 00000e40 20 31 32 37 20 63 6f 6d 70 6f 6e 65 6e 74 73 20 | 127 components | 00000e50 70 65 72 20 73 63 68 65 6d 61 74 69 63 20 28 69 |per schematic (i| 00000e60 6e 63 6c 75 64 65 73 20 6e 6f 64 65 73 29 2e 0d |ncludes nodes)..| 00000e70 4d 61 78 69 6d 75 6d 20 32 35 35 20 6c 69 6e 6b |Maximum 255 link| 00000e80 73 20 62 65 74 77 65 65 6e 20 63 6f 6d 70 6f 6e |s between compon| 00000e90 65 6e 74 73 2e 0d 0d 45 58 41 4d 50 4c 45 20 46 |ents...EXAMPLE F| 00000ea0 49 4c 45 53 0d 0d 54 77 6f 20 65 78 61 6d 70 6c |ILES..Two exampl| 00000eb0 65 20 66 69 6c 65 73 20 61 72 65 20 73 75 70 70 |e files are supp| 00000ec0 6c 69 65 64 20 6f 6e 20 74 68 69 73 20 45 55 47 |lied on this EUG| 00000ed0 20 64 69 73 63 20 2d 20 74 68 65 79 20 63 61 6e | disc - they can| 00000ee0 20 62 65 20 61 63 63 65 73 73 65 64 20 75 73 69 | be accessed usi| 00000ef0 6e 67 0d 22 4f 70 65 6e 22 20 6f 6e 20 74 68 65 |ng."Open" on the| 00000f00 20 66 69 6c 65 20 6d 65 6e 75 2e 20 54 68 65 79 | file menu. They| 00000f10 20 61 72 65 20 61 73 20 66 6f 6c 6c 6f 77 73 3a | are as follows:| 00000f20 0d 0d 41 6d 70 20 2d 20 41 6e 20 4f 70 41 6d 70 |..Amp - An OpAmp| 00000f30 20 73 65 74 20 75 70 20 61 73 20 61 20 6e 6f 6e | set up as a non| 00000f40 2d 69 6e 76 65 72 74 69 6e 67 20 61 6d 70 6c 69 |-inverting ampli| 00000f50 66 69 65 72 2e 0d 50 4c 4c 20 2d 20 41 20 70 68 |fier..PLL - A ph| 00000f60 61 73 65 20 6c 6f 63 6b 65 64 20 6c 6f 6f 70 20 |ase locked loop | 00000f70 73 65 74 20 75 70 20 74 6f 20 61 63 74 20 61 73 |set up to act as| 00000f80 20 61 20 34 31 30 78 20 66 72 65 71 75 65 6e 63 | a 410x frequenc| 00000f90 79 20 6d 75 6c 74 69 70 6c 69 65 72 2e 0d 0d 46 |y multiplier...F| 00000fa0 55 54 55 52 45 20 44 45 56 45 4c 4f 50 4d 45 4e |UTURE DEVELOPMEN| 00000fb0 54 53 0d 0d 49 20 68 61 76 65 20 61 20 6e 75 6d |TS..I have a num| 00000fc0 62 65 72 20 6f 66 20 69 64 65 61 73 20 66 6f 72 |ber of ideas for| 00000fd0 20 69 6d 70 72 6f 76 65 6d 65 6e 74 73 20 77 68 | improvements wh| 00000fe0 69 63 68 20 49 20 63 6f 75 6c 64 20 6d 61 6b 65 |ich I could make| 00000ff0 20 74 6f 20 41 64 76 61 6d 63 65 64 20 43 41 44 | to Advamced CAD| 00001000 2c 0d 61 6e 64 20 69 74 20 69 73 20 6d 79 20 69 |,.and it is my i| 00001010 6e 74 65 6e 74 69 6f 6e 20 74 6f 20 72 65 6c 65 |ntention to rele| 00001020 61 73 65 20 61 20 73 65 63 6f 6e 64 20 76 65 72 |ase a second ver| 00001030 73 69 6f 6e 20 69 6e 20 61 20 66 65 77 20 6d 6f |sion in a few mo| 00001040 6e 74 68 73 20 74 69 6d 65 2e 0d 46 65 61 74 75 |nths time..Featu| 00001050 72 65 73 20 6d 61 79 20 69 6e 63 6c 75 64 65 20 |res may include | 00001060 61 75 74 6f 6d 61 74 69 63 61 6c 6c 79 20 6d 61 |automatically ma| 00001070 6b 69 6e 67 20 6c 69 6e 6b 73 20 6c 6f 6f 6b 20 |king links look | 00001080 6e 65 61 74 20 28 61 76 6f 69 64 20 63 75 74 74 |neat (avoid cutt| 00001090 69 6e 67 0d 63 6f 6d 70 6f 6e 65 6e 74 73 29 2c |ing.components),| 000010a0 20 61 6e 64 20 61 20 6c 61 72 67 65 72 20 6c 69 | and a larger li| 000010b0 73 74 20 6f 66 20 63 6f 6d 70 6f 6e 65 6e 74 73 |st of components| 000010c0 2e 20 49 66 20 49 20 63 61 6e 20 66 69 6e 64 20 |. If I can find | 000010d0 74 68 65 20 6d 65 6d 6f 72 79 20 28 61 6e 64 20 |the memory (and | 000010e0 74 68 65 0d 74 69 6d 65 20 74 6f 20 64 6f 20 69 |the.time to do i| 000010f0 74 21 29 20 49 20 6d 61 79 20 65 76 65 6e 20 63 |t!) I may even c| 00001100 6f 6e 73 69 64 65 72 20 73 6f 6d 65 20 73 69 6d |onsider some sim| 00001110 70 6c 65 20 50 43 42 20 6c 61 79 6f 75 74 20 66 |ple PCB layout f| 00001120 61 63 69 6c 69 74 69 65 73 2e 20 54 68 65 20 6d |acilities. The m| 00001130 61 69 6e 0d 6c 69 6d 69 74 69 6e 67 20 66 61 63 |ain.limiting fac| 00001140 74 6f 72 20 69 6e 20 74 68 69 73 20 76 65 72 73 |tor in this vers| 00001150 69 6f 6e 20 77 61 73 20 74 68 65 20 6d 65 6d 6f |ion was the memo| 00001160 72 79 20 61 76 61 69 6c 61 62 6c 65 2c 20 61 6e |ry available, an| 00001170 64 20 73 6f 20 49 20 77 69 6c 6c 20 68 61 76 65 |d so I will have| 00001180 20 74 6f 0d 63 6f 6e 76 65 72 74 20 74 68 65 20 | to.convert the | 00001190 65 6e 74 69 72 65 20 70 72 6f 67 72 61 6d 20 69 |entire program i| 000011a0 6e 74 6f 20 6d 61 63 68 69 6e 65 20 63 6f 64 65 |nto machine code| 000011b0 20 74 6f 20 6d 61 6b 65 20 74 68 65 73 65 20 69 | to make these i| 000011c0 64 65 61 73 20 70 6f 73 73 69 62 6c 65 2e 0d 0d |deas possible...| 000011d0 4f 6e 65 20 66 65 61 74 75 72 65 20 77 68 69 63 |One feature whic| 000011e0 68 20 69 73 20 63 6c 65 61 72 6c 79 20 6c 61 63 |h is clearly lac| 000011f0 6b 69 6e 67 20 69 73 20 61 6e 20 22 55 6e 64 6f |king is an "Undo| 00001200 20 4c 69 6e 6b 22 20 66 75 6e 63 74 69 6f 6e 2e | Link" function.| 00001210 20 4f 6e 63 65 20 79 6f 75 20 68 61 76 65 0d 6c | Once you have.l| 00001220 69 6e 6b 65 64 20 74 77 6f 20 63 6f 6d 70 6f 6e |inked two compon| 00001230 65 6e 74 73 2c 20 74 68 65 20 6f 6e 6c 79 20 77 |ents, the only w| 00001240 61 79 20 74 6f 20 75 6e 64 6f 20 79 6f 75 72 20 |ay to undo your | 00001250 6c 69 6e 6b 20 69 73 20 74 6f 20 64 65 6c 65 74 |link is to delet| 00001260 65 20 6f 6e 65 20 6f 66 20 74 68 65 0d 63 6f 6d |e one of the.com| 00001270 70 6f 6e 65 6e 74 73 20 61 6e 64 20 74 68 65 6e |ponents and then| 00001280 20 6d 61 6b 65 20 61 20 6e 65 77 20 6f 6e 65 20 | make a new one | 00001290 69 6e 20 69 74 73 20 70 6c 61 63 65 2e 20 54 68 |in its place. Th| 000012a0 69 73 20 63 61 6e 20 62 65 20 61 20 62 69 74 20 |is can be a bit | 000012b0 74 65 64 69 6f 75 73 0d 77 69 74 68 20 49 43 73 |tedious.with ICs| 000012c0 2c 20 61 6e 64 20 73 6f 20 49 20 72 65 63 6f 6d |, and so I recom| 000012d0 6d 65 6e 64 20 66 72 65 71 75 65 6e 74 20 73 61 |mend frequent sa| 000012e0 76 69 6e 67 2e 20 54 68 65 20 72 65 61 73 6f 6e |ving. 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CAD/CADNew/I2.m0
CAD/CADNew/I2.m1
CAD/CADNew/I2.m2
CAD/CADNew/I2.m4
CAD/CADNew/I2.m5
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