China DOS Union

I'm on a batch of HP 7380 machines today.

DOS system.

Directly load the mouse driver with mouse.
The mouse is displayed, but it can't be used.

I found that after loading the mouse driver, shake the mouse. Only after reloading can it be used.
For example:
//Load mouse driver
mouse
//Use edit
edit
//Shake the mouse. Although nothing is displayed at this time, the work must be done
//Exit edit
//Use edit again
edit
//At this time, you will magically find that the mouse can be used.

Just did a test just now.
Magical steps:
//Load mouse driver (constantly shaking the mouse)
mouse
//Use edit
edit
//At this time you will magically find that the mouse can be used.

Today, a large-scale test was carried out. Some parts of the mouse driver can be used when loaded. Some parts cannot be used. The ones that cannot be used might work again in the next boot. Just one word. Dizzy. This problem won't be solved. It's like this.