Enhanced/Dual Powered
Willem EPROM Programmer
User Guide Â
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Main Board / Cables
Main Board PCB3.5
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Main Board PCB4E
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Main Board PCB5.0
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Main Board PCB5.5C
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Parallel Data Cable (Printer extension cable, with male-female 25 pin connector, and pin to pin through) |
A-A type USB cable(for power) |
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Optional Items:
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ATMELÂ 89 Adapter |
ATMEL PLCC 44 Adapter |
TSOP 48 Adapter |
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FWH/HUB PLCC32Adapter |
PLCC32 Adapter |
SOIC Adapter(Simplified) |
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On-Board |
On-Board |
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AC or DC Power Adapter (9V or 12V, 200mA) |
SOIC Adapter(Professional) |
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: TurboCAD has historically been the primary software capable of opening or importing
Legacy files often had limited color palettes or complex layer structures. The new converter provides smarter mapping, ensuring layers, colors, and line weights are preserved according to modern standards, or mapped to a standard template. How to Convert DW2 to DWG (Step-by-Step)
For the lone architect opening a floppy disk for a heritage home, or the engineering firm bidding on a 1992 refinery retrofit, this tool is indispensable. The new update removes the frustrations of text corruption, slow speeds, and crashes. dw2 to dwg converter updated
The Ultimate Guide to DW2 to DWG Conversion: Updated Methods and Tools
: The most reliable way to convert DW2 is often through the TurboCAD user community or the software itself, which can export legacy formats directly to DWG. : TurboCAD has historically been the primary software
The Ultimate Guide: DW2 to DWG Converter Updated for 2026 If you are working with legacy architectural or mechanical drawings, you may have encountered the file extension. This format was primarily used by DesignCAD (specifically versions like DesignCAD 2D Version 8) developed by IMSI/Design. However, as industry standards have shifted toward Autodesk's DWG format, converting these older files has become a necessity for modern collaboration.
The updated converter runs natively on Windows 11, macOS (via Wine-free binary), and even Linux. No more virtual machines or legacy emulators. The new update removes the frustrations of text
In the evolving world of Computer-Aided Design (CAD), interoperability is crucial. While Autodesk's DWG format is the industry standard for 2D and 3D design, many engineers, architects, and manufacturers still encounter legacy files, specifically the . These older files, often originating from archaic CAD systems or specific plotter formats, can create significant bottlenecks when trying to integrate them into modern software like AutoCAD or SolidWorks.
: This maintains complex 3D geometry and layer structures that generic online converters might lose. 3. Professional Third-Party Converters
Existing users can download the update directly via the menu within the application. For new users, a trial version featuring the updated engine is available on our official downloads page.
: This software also supports DesignCAD drawings and can be used for conversion. Third-Party & Alternative Solutions
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Hardware Installation & Configuration
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Installation Steps
         (Note: the LPT port of PC MUST set to ECP or ECP+EPP during BIOS setup. To enter the BIOS setting mode, you need press "Del" key or "F1" key during the computer selftest, which is the moment of computer just power up.)  Software Version To Use | |||
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         The software interface:  | |||
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 Hardware
Check  | |||
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 PCB3.5/PCB4E
PCB5.0
PCB5.5C
Note: the Vcc setting jumper only has effect when you are using AC adaptor as power source. For the USB power only 5V Vcc is available. For the PCB5.5C, set DIP steps: 1. press DIP Set button twice to check current DIP bit position. Then set it again for ON or OFF. 2. press DIP Bit shift button to shift the DIP bit position to where need to set. And then press DIP Set button twice to check current DIP bit position. Then set it again for ON or OFF. 3. Repeat those steps till all DIP bit ae set same as software indicated. For PCB5.5C voltage and Special chip selection: 1. Put back the safety jumper. 2. Press the voltage button and hold for 1 second, the voltage LED should move to next. Repeat till desired voltage LED light up. 3. Press the chip selection button and hold for 1 second, the chip LED should move to next. Repeat till desired LED light up. 4. Remove the safety jumper to lock the selected voltage and chip selection DIP Switch (PCB3.5, PCB5.0)
When programming one chip, follow the program prompt to set DIP switch .  |
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: TurboCAD has historically been the primary software capable of opening or importing
Legacy files often had limited color palettes or complex layer structures. The new converter provides smarter mapping, ensuring layers, colors, and line weights are preserved according to modern standards, or mapped to a standard template. How to Convert DW2 to DWG (Step-by-Step)
For the lone architect opening a floppy disk for a heritage home, or the engineering firm bidding on a 1992 refinery retrofit, this tool is indispensable. The new update removes the frustrations of text corruption, slow speeds, and crashes.
The Ultimate Guide to DW2 to DWG Conversion: Updated Methods and Tools
: The most reliable way to convert DW2 is often through the TurboCAD user community or the software itself, which can export legacy formats directly to DWG.
The Ultimate Guide: DW2 to DWG Converter Updated for 2026 If you are working with legacy architectural or mechanical drawings, you may have encountered the file extension. This format was primarily used by DesignCAD (specifically versions like DesignCAD 2D Version 8) developed by IMSI/Design. However, as industry standards have shifted toward Autodesk's DWG format, converting these older files has become a necessity for modern collaboration.
The updated converter runs natively on Windows 11, macOS (via Wine-free binary), and even Linux. No more virtual machines or legacy emulators.
In the evolving world of Computer-Aided Design (CAD), interoperability is crucial. While Autodesk's DWG format is the industry standard for 2D and 3D design, many engineers, architects, and manufacturers still encounter legacy files, specifically the . These older files, often originating from archaic CAD systems or specific plotter formats, can create significant bottlenecks when trying to integrate them into modern software like AutoCAD or SolidWorks.
: This maintains complex 3D geometry and layer structures that generic online converters might lose. 3. Professional Third-Party Converters
Existing users can download the update directly via the menu within the application. For new users, a trial version featuring the updated engine is available on our official downloads page.
: This software also supports DesignCAD drawings and can be used for conversion. Third-Party & Alternative Solutions
 
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