Книга: Introduction to Microprocessors and Microcontrollers

Quiz time 13

In each case, choose the best option.

1 The maximum number of instructions that the PowerPC 970 can be dealing simultaneously is:

(a) 200.

(b) 3.

(c) 16384.

(d) 128.

2 Write-back:

(a) reverses the order of the bits of data.

(b) is used to double-check the accuracy of data before use.

(c) is only used in the little-endian system.

(d) stores results in the cache rather than in the external memory.

3 The PowerPC 970 has an internal bus running at a frequency of:

(a) 64 bits/s although it can run at 32 bits/s.

(b) 512 kB/s.

(c) 900 MHz.

(d) 533 MHz.

4 A register that can be accessed by two circuits at the same time is referred to as:

(a) a second-level cache.

(b) dual-ported.

(c) a buffer.

(d) a three-ported device.

5 Big endian format:

(a) stores the low byte in the highest address.

(b) stores the high byte in the highest address.

(c) is used in all microprocessors.

(d) is used in a cache but never in the main memory.

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