Operating System (OS)
The Storage-to-Storage instructions

have both their operands in the main store.
None of these
which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, expect in the case of store operation when it is also
All of these
which perform indicated operations on two fast registers of the machine and have the result in one of the registers

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Operating System (OS)
The CPU, after receiving an interrupt from an I/O device

branches off to the interrupt service routine after completion of the current instruction
halts for a predetermined time
branches off to the interrupt service routine immediately
hands over control of address bus and data bus to the interrupting device
None of these

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Operating System (OS)
System generation:

requires extensive tools to be understandable
varies in difficulty between systems
None of these
is always very difficult
is always quite simple

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