Look for the largest chip. If you see an ATMEGA or PIC16F877A , you likely need the "Willem USB v0.x" software. If you only see logic gates (74HC244, 74HC373) and a DB25 parallel connector, you need the classic "Willem EPROM v0.97g" or "v0.98d" software.
Create a dedicated folder directly on your main drive (e.g., C:\Willem ). Willem Pcb50b Software Download
If using an external PCI/PCIe LPT card, open , locate your LPT port, and note down its hex address (e.g., 378 , 278 , or custom addresses like E010 ). Step 3: Configure the Software Interface Launch the Willem software. Navigate to the Help or Hardware Test menu. Look for the largest chip
Perform a hardware test to ensure communication between the PC and the programmer is functional. 🎛️ Configuring Willem PCB5.0B Jumper Switches Create a dedicated folder directly on your main drive (e