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- DOCUMENT FILE FOR PCBTODXF.EXE Version 2.01
-
- (c) 1991 PROTEL TECHNOLOGY PTY LTD
-
-
-
- This program converts an AUTOTRAX PCB file to the AUTOCAD Drawing
- Interchange file (DXF) format.
-
- Because of the space intensive nature of the DXF format, the program
- generates either "draft" mode or "full" mode output.
-
- Running PCBtoDXF.
-
-
- Type PCBtoDXF
-
- The following will appear
-
- AUTOTRAX FILE to AUTOCAD FILE PROGRAM Version 2.01
- ---------------------------------------------------
-
- Copyright (c) 1988,1991 Protel Technology Pty. Ltd.
-
- Input File Name >
-
- Enter the AUTOTRAX PCB file name (the extension will be forced to .PCB)
-
- Output File Name >
-
- Enter the DXF output file name.(the extension will be forced to .DXF)
-
- If the output file already exists, then you will be asked to confirm
- overwriting it.
-
- Output File SOMEFILE.DXF Exists, Overwrite Y/N >
-
- Press the Y or N key.
-
- You can also supply these filenames from the command line, but the
- overwrite prompt will still appear.
-
- If you supply incorrect number of command line parameters then the
- following help message will appear.
-
- Correct Command Line Usage
- PCBtoDXF <AUTOTRAX File Name> <DXF File Name>
-
- For Example
- PCBtoDXF DEMO TEST
- Will Generate The File TEST.DXF
- If No File Names Are Supplied, The Program Will Prompt For Them.
-
-
- If the input file is not found, then the following message will appear
- and you will be returned to the DOS prompt.
-
- Input File Not Found. PCBtoDXF Program Aborted
-
- Otherwise the following message will be displayed
-
- Do You Want Full Quality Output in the DXF file (Big File)
- Y:es, Full Quality
- N:o, Generate Only Draft Quality
-
- Press the Y or N key to continue. The following message will appear and
- the DXF file will be generated.
-
- Processing SOMEFILE.PCB
-
- The sizes of the DXF file will vary dramatically depending on the
- contents of the PCB file, but as a rough guide, the draft mode DXF file
- will be 3 to 4 times the size of the PCB file, and the full mode DXF
- file will be 8 to 12 times the size of the PCB file.
-
-
-
-
- Notes on storage of data in the DXF file
- ----------------------------------------
-
- The program will place all of the PCB data from all PCB layers onto
- equivilent AutoCAD layers. To keep the space to a minimum, single letter
- layer designators are used.
-
-
- Top Layer T
- Mid Layer 1 1
- Mid Layer 2 2
- Mid Layer 3 3
- Mid Layer 4 4
- Bottom Layer B
- Top Overlay O
- Bottom Overlay M
- Ground Layer G
- Power Layer P
- Board Layer D
- Keep-Out Layer K
- Multi-Layer U
-
- All items (both free and component primitives) are saved as individual
- entities in the DXF file.
-
-
- Tracks
- In draft mode, tracks are stored as simple lines.
- In full mode, tracks are stored as a single poly-line with a solid
- circle on each end. Each solid circle consists of two 180 degree
- polyarcs.
-
- Round Pads and Vias
- In draft mode, round pads and vias are stored as simple circles.
- In full mode they are stored as two 180 degree polyarcs.
-
- Round Rectangular Pads
- In Draft mode, these consist of two simple arcs, with two simple lines.
- In Full mode rounded rectangular pads are stored in the same way as
- tracks.
-
- Rectangular Pads and Fills
- These are always drawn as solid fills. Although this is inconsistant,
- (ie fills are solid when all others are wire-frame), the storage
- requirements for rectangular solids are less than for 4 lines. If you
- wish to display a draft mode DXF file as all wire-frame (ie including
- area-fills), then use the AutoCAD FILL command to display SOLIDS as
- wire-frames.
-
- Octagonal Pads
- In Draft mode these are stored as eight lines.
- In full mode, they are stored as three horizontally oriented AutoCAD
- solids.
-
- Targets
- In draft mode, stored as 2 lines and 2 arcs.
- In full mode, stored as 2 polylines and 2 polyarcs.
-
- Moires
- Stored as either arcs in draft mode or polyarcs in full mode.
-
- Text
- Always stored as scaled and rotated AutoCAD text using the default
- AutoCAD font. Line thickness is always 1 pixel.
-
- Arcs
- In draft mode, stored as a single AutoCAD arc.
- In full mode stored as 1 or 2 polyarcs (since polyarcs can only be 180
- degrees max).
-
-
- (rev 3.91)
- (end)