Have a look at http://www.winpicprog.co.uk which also uses the parallel port. You will need to build a new programmer to use the WinPicPro software but all the info you need is on that site.
Have a look at http://www.winpicprog.co.uk which also uses the parallel port. You will need to build a new programmer to use the WinPicPro software but all the info you need is on that site.
Thank you for your suggestion. I do not need to design and build a new circuitry but I need to adjust the values for the program to work with my device.
Currently WPP treats the device as it wasn't there. Do you see the problem's cause on the attached screenshots ?
The FPP programming software was created in 2001 and does not in its device list has the newer "A" types of PIC which require a different algorithm to program them. I have the feeling that Nigel's WinPicPro is a more updated or expanded version based on FPP judging by the hardware menu.
Since you have tried using WinPicPro but it does not work, you have no choice but to upgrade your hardware. Perhaps you can try searching on the NET for other successful programming arrangement using very few parts. Have a look on the following thread.
No, I've never heard of FPP - I suspect he showed screen shots from both programs - and WinPicProg far predates FPP, WinPicProg was the worlds first Windows based PIC programmer (long before MicroChip moved to Windows).
This programmer is to be used with another program than FPP; I used it with FPP and it worked. It is similar to DT's "Quick and Dirty". Additionally I don't know if it doesn't work at all. This is why I uploaded these two screenshots for you to understand what was entered/adjusted wrong.
No, I've never heard of FPP - I suspect he showed screen shots from both programs - and WinPicProg far predates FPP, WinPicProg was the worlds first Windows based PIC programmer (long before MicroChip moved to Windows).
The PIC16F628A can be programmed with any "Tait" programmer, if that microcontroller is supported by the software. A couple of suggestions:
1) use the 7406 inverting buffers or the 7407 non-inverting buffers, because they have high voltage open collector outputs;
2) update the original design by adding a resistor to pull PGM to ground.
I use this programmer: www.eeng.biz/ppp_e.htm with PIC16F628A, PIC16F88, PIC12F675 (Vpp = 12.7 V)