The a field is used to identify all except
which of the following registers?
1. Stack pointer
Basic load, store, replace, and simple
mathematical operations are performed
using what instruction format?
Format II instructions perform all except
which of the following types of operations?
2. I/O commands
3. Single precision mathematics
4. Program sequence control jumps
What is the maximum value of a
subfunction code of(a) two bits and (b)
1. (a) 2 (b) 3
2. (a) 2 (b) 7
3. (a) 3 (b) 5
4. (a) 3 (b) 7
Formats IV-A and IV-B are half-word
instructions and two of them may be stored
in one memory word. Which of the
following methods is used to keep track of
upper/lower instruction execution?
1. Active status register
2. Indirect addressing mode
3. Monitor clock
For operations such as setting, clearing, or
testing an individual bit, what instruction
format is used?
For single- and double-precision floating-
point math operations, what instruction
format would be used?
2 . II
3 . I II
Which of the following are types of
1. Direct and indirect only
2. Extended, immediate, and implicit
3. Indexed and relative only
4. Direct, indirect, extended, immediate,
implicit, indexed, and relative
In which addressing mode is the operand
itself contained in the instruction?
An instruction in which no operand address
needs to be specified because the operation
code contains all the information needed
uses what addressing mode?