Hi,
On my 386 laptop, I was using an SD card to parallel port adapter
(https://github.com/nilseuropa/sdpp)
It worked really well.
But for some reason the SDPP has stopped working - it seemed to happen after I used an OPL2LPT on the machine.

The OPL2LPT works fine still, I can print fine from the parallel port.
CheckIT sees the parallel port (but it does also see the non-working serial port - The serial port on the laptop doesn't work but that predates all of this)

The SDPP adapter still works on my 486 and pentium 3 machines - I have used the same boot floppy to boot all 3 machines to make sure it wasnt a driver or config conflict.

The BIOS has no settings for the parallel port - I have tried disabling the serial port in the bios just in case but that doesnt do anything.

I have tried different SD cards but again to no avail - they work fine in the 486 and P3 but not the 386.

It is really annoying as the 386 has no other easy way to transfer files other than the floppy drive - and the SDPP did work fine!

Can anyone point me in the direction of how to troubleshoot this further or how I do a detailed test of the parallel port? I'd understand if the whole port didnt work, but it just seems very odd that it is just ths SDPP that fails.

(The SDPP is USB powerered so it isnt a power issue from the parallel port)

Thanks!