Reading works, too.

Recording probably works.

Erasing 32k works

Erasing 4k does not work

Erasing doesn't work

And if you connect additional SPI devices, their settings affect the operation of memory.
This means that when I access the memory I have to change the settings for each device promptly.

When additional SPI devices are connected, the SPI settings have an effect on memory operation.
What if the devices are different?

When additional SPI devices are connected, the SPI settings have an effect on memory operation.
What if the devices are different?

It's in PROTEUS.

Moreover, the program makes one iteration and stops at one of the commands.