Question

What's the format of the AARM64 instruction with the following binary value: 1000 1011 0000 0000 0000 0000 0000 0000 Warning: each incorrect submission will cost you 1/3 of the points! Note: you will need to use figure 2.20 out of the book. Select one: o a. D-format O b. I-format c. B-format X o d. CB-format O e. IW-format O f. R-format Check

Answer 1

Option D: CB-Format (Conditional Branch Format)

Explanation: Given instruction in Binary is 1000 1011 0000 0000 0000 0000 0000 0000.

First 4 bits are condition bits which is 1000 which is HI. And next three bits denote branch instruction and the next bit denotes it is branch with link instruction.

You can refer the following table for questions like this in future.

Meaning equal not equal unsigned higher or same unsigned lower negative positive or zero overflow no overflow unsigned higher unsigned lower or same greater or equal less than greater than less than or equal always Code Suffix EQ NE CS 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 MI PL VS VC HI LS GE LT GT LE AL Flags Z set Z clear C set C clear N set N clear V set V clear C set and Z clear C clear or Z set N equals V N not equal to V Z clear AND (N equals V) Z set OR (N not equal to V) (ignored)

Instruction format of Branch is given as

31 28 27 25 24 23 Cond 101 L offset -Link bit 0 Branch 1 Branch with Link Condition field