Amiga: https://wiki.amigaos.net/wiki/Introduction_to_Exec https://wiki.amigaos.net/wiki/Introduction_to_Exec > The Multitasking Executive, better known as Exec

Amiga: https://wiki.amigaos.net/wiki/Introduction_to_Exec https://wiki.amigaos.net/wiki/Introduction_to_Exec > The Multitasking Executive, better known as Exec, is the heart of the Amiga's operating system. > All other systems in the Amiga rely on it to control multitasking, to manage the message-based interprocess communications system, and to arbitrate access to system resources.