. . "IBM System/360 architecture" . "IBM System/360 architecture" . . "System/360 \\\"universal instruction set\\\" architecture" . "IBM System/360 series" . "IPL" . "System Reset" . "IBM System/360" . "''Initial Program Load''" . "status modifier" . "Initial Program Load" . "System/360" . "IBM System/360 architecture#LPSW" . "block multiplexor channel" . . "I/O channels" . "System/360 architecture" . . "truncated addressing" . "fetch protection" . "Selector Channel" . "Attention" . . . "360/370" . "Input/Output architecture" . . . "Interrupts on IBM System/360 architecture" .