> A terminate-and-stay-resident program (commonly TSR) is a computer program running under DOS that uses a system call to return control to DOS as though it has finished, but remains in computer memory so it can be reactivated later. This technique partially overcame DOS's limitation of executing only one program, or task, at a time. TSRs are used only in DOS, not in Windows.
Which still leaves the question what the purpose of loading a TSR in the Windows virtual machine but not in others would be.
dcrazy 16 hours ago [-]
I love Raymond’s periodic peeks into how Windows/386 and later were not just shells atop DOS shells, as they are often derided.
> A terminate-and-stay-resident program (commonly TSR) is a computer program running under DOS that uses a system call to return control to DOS as though it has finished, but remains in computer memory so it can be reactivated later. This technique partially overcame DOS's limitation of executing only one program, or task, at a time. TSRs are used only in DOS, not in Windows.
Which still leaves the question what the purpose of loading a TSR in the Windows virtual machine but not in others would be.