I got an error when writing because of the missing () in line 226 of pxdisk_mega.ino.

[RN-NOMATAN373]

Operation was confirmed with Arduino UNO R4.
Thank you for providing this very useful software.
I got an error when writing because of the missing () in line 226 of pxdisk_mega.ino.

Before fix
File dsk = SD.open(diskNames[device], O_READ | O_WRITE | O_CREAT);

After modification
File dsk = SD.open(diskNames[device], (O_READ | O_WRITE | O_CREAT));

Now it works.
Note that I can successfully create a text file to the A: drive using PIP.COM in PX4UTILS.IMG mounted on D:, though,
PIP A:HELLO.TXT=CON:.

For other drives (D:E:F:G:)
PIP E:HELLO.TXT=CON:
the following message appears and an error occurs.
BDOS ERR ON G: BAD SECTOR

The model is PX-4.
Thank you.

Translated with DeepL.com (free version)

[electrickery]

Hi RN-NOMATAN373,

On the ()'s; This could mean not all c++ compilers are created equal. I guess some extra parentheses are not harmful here. I test some more and then add it to the repo.

On the PIP scenario; the emulator doesn't like it when a file is created and kept open. I will try and see what a real TF-20 does in this case, but not really soon :-).

Greetings,
Fred Jan