Cosa (chi) è Terminate and Stay Resident - definizione
COMPUTER PROGRAM THAT USES A SYSTEM CALL TO RETURN CONTROL TO THE OS, AS THOUGH THE PROGRAM HAS QUIT, BUT STAYS RESIDENT IN MEMORY SO IT CAN BE REACTIVATED BY A HARDWARE OR SOFTWARE INTERRUPT, IN ORDER TO WORK AROUND THE OS’S LACK OF MULTITASKING
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Terminate and Stay Resident
(TSR) A type of DOS utility which, once loaded, stays in
memory and can be reactivated by pressing a certain
combination of keys.
Terminate-and-stay-resident program
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.
Resident set size
COMPUTER PROCESS AND DATA IN RAM
Rsize; Resident Set Size; Resident set
In computing, resident set size (RSS) is the portion of memory occupied by a process that is held in main memory (RAM). The rest of the occupied memory exists in the swap space or file system, either because some parts of the occupied memory were paged out, or because some parts of the executable were never loaded.
Wikipedia
Terminate-and-stay-resident program
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.
Some TSRs are utility software that a computer user might call up several times a day, while working in another program, using a hotkey. Borland Sidekick was an early and popular example of this type. Others serve as device drivers for hardware that the operating system does not directly support.
