Question

The above have answers in blue

Which bits will be used for what? Eg. I know lst 2 LSB are byte offset. Then which bits will be used for word select, block select & tag?

What I did was

• 2 LSB: Byte offset
• 1 Bit: Word select
• 4 Bit: Block select
• Rest: Tag

But it appears wrong? For (a) I have

(b) incomplete I think but its already wrong

Answer 1

This part of your reasoning is incorrect:

• 2 LSB: Byte offset
• 1 Bit: Word select
• 4 Bit: Block select
• Rest: Tag

Remember that the problem says the word size is 16 bits or two bytes, so only one address bit is used for byte offset within a word.

Again, this has absolutely nothing to do with MIPS which has a 32 or 64 bit word.