Answer the following statements true (T) or false (F)

1. On a traditional IBM mainframe, when an I/O operation is finished, the channel signals
the main processor and reports its status to the operating system through the channel
status word or CSW.
2. On a traditional IBM mainframe, the signal that flashes from a channel to the processor is
called an interrupt.
3. A traditional IBM mainframe’s hardware responds to an interrupt signal by switching
PSWs.
4. On a traditional IBM mainframe, the old PSW is the special register that holds the address of the next instruction to be executed.
5. On a traditional IBM mainframe, the old PSW is located in a special register.

1. T
2. T
3. T
4. F
5. F