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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Autodata 3.40 is a time capsule. For the right era of cars, it is still perfect. Just don't expect it to behave like a modern app—because in the world of garage tools, "vintage" usually means "bulletproof."
Buy a cheap refurbished laptop ($100), install Windows 10 32-bit (or Windows XP), turn off WiFi, and use that as your dedicated legacy Autodata machine. Keep it plugged in near your diagnostic station. Autodata 3.40 Windows 10
One version that still sparks heated debate in forums and workshop groups is . Was it the peak of the offline era? Possibly. Is it still usable today on modern hardware running Windows 10 ? The answer is a qualified yes —but it comes with a few speed bumps. Autodata 3
Keeping the Classics Alive: Running Autodata 3.40 on Windows 10 Date: October 26, 2023 Category: Workshop Tech / Legacy Software Keep it plugged in near your diagnostic station
Here is everything you need to know about resurrecting Autodata 3.40 on a Windows 10 machine. Autodata 3.40 is often cited as the last truly "stable" offline build before the company pivoted heavily toward online subscription models (Autodata Online). It covers a sweet spot of vehicle manufacturing years—roughly the mid-90s to the early 2010s. For garages working on older European and Asian models, this version still holds invaluable timing belt diagrams, torque specs, and fault code charts that newer cloud-based systems sometimes drop for "legacy" vehicles. The Windows 10 Compatibility Challenge Here is the reality: Autodata 3.40 was built for Windows 98, 2000, and XP. It uses an older database driver (usually Microsoft Jet or FoxPro linkages) and a copy-protection system that expects CD-ROM drives and specific registry paths.
Have you gotten Autodata 3.40 working on Windows 11? Let us know in the comments below.
If you have been in the automotive repair industry for more than a decade, the name brings back a wave of nostalgia. Before the era of cloud subscriptions and pay-per-view wiring diagrams, Autodata’s CD-ROM based software was the gold standard for technical specifications.
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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 Â
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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Autodata 3.40 is a time capsule. For the right era of cars, it is still perfect. Just don't expect it to behave like a modern app—because in the world of garage tools, "vintage" usually means "bulletproof."
Buy a cheap refurbished laptop ($100), install Windows 10 32-bit (or Windows XP), turn off WiFi, and use that as your dedicated legacy Autodata machine. Keep it plugged in near your diagnostic station.
One version that still sparks heated debate in forums and workshop groups is . Was it the peak of the offline era? Possibly. Is it still usable today on modern hardware running Windows 10 ? The answer is a qualified yes —but it comes with a few speed bumps.
Keeping the Classics Alive: Running Autodata 3.40 on Windows 10 Date: October 26, 2023 Category: Workshop Tech / Legacy Software
Here is everything you need to know about resurrecting Autodata 3.40 on a Windows 10 machine. Autodata 3.40 is often cited as the last truly "stable" offline build before the company pivoted heavily toward online subscription models (Autodata Online). It covers a sweet spot of vehicle manufacturing years—roughly the mid-90s to the early 2010s. For garages working on older European and Asian models, this version still holds invaluable timing belt diagrams, torque specs, and fault code charts that newer cloud-based systems sometimes drop for "legacy" vehicles. The Windows 10 Compatibility Challenge Here is the reality: Autodata 3.40 was built for Windows 98, 2000, and XP. It uses an older database driver (usually Microsoft Jet or FoxPro linkages) and a copy-protection system that expects CD-ROM drives and specific registry paths.
Have you gotten Autodata 3.40 working on Windows 11? Let us know in the comments below.
If you have been in the automotive repair industry for more than a decade, the name brings back a wave of nostalgia. Before the era of cloud subscriptions and pay-per-view wiring diagrams, Autodata’s CD-ROM based software was the gold standard for technical specifications.