Question

Given the root area dump below, what is the date for the file STUDENT ASM?

(Hint: The date is stored at offset 18, and its length is 2 bytes.
The bit pattern is: Year = 1980+Left 7, Month = Middle 4, Day = Right 5.
Note: your answer should be in the format MM/DD/YYYY)
13CD:0000 4E 41 53 4D 20 46 49 4C-45 53 20 08 00 00 00 00 NASM FILES .....
13CD:0010 00 00 00 00 00 00 4F B5-4B 33 00 00 00 00 00 00 ......O.K3......
13CD:0020 4E 41 53 4D 57 20 20 20-45 58 45 20 00 22 58 B5 NASMW EXE ."X.
13CD:0030 4B 33 4B 33 00 00 A0 05-C5 26 02 00 00 70 04 00 K3K3.....&...p..
13CD:0040 4C 49 43 45 4E 53 45 20-54 58 54 20 00 61 65 B5 LICENSE TXT .ae.
13CD:0050 4B 33 4B 33 00 00 72 7F-4C 2D 3A 02 36 07 00 00 K3K3..r.L-:.6...
13CD:0060 45 58 45 42 49 4E 20 20-4D 41 43 20 00 9A 69 B5 EXEBIN MAC ..i.
13CD:0070 4B 33 4B 33 00 00 6F 50-44 23 3E 02 55 06 00 00 K3K3..oPD#>.U...
13CD:0080 53 54 55 44 45 4E 54 20-41 53 4D 20 00 12 75 B5 STUDENT ASM ..u.
13CD:0090 4B 33 4B 33 00 00 C6 BD-16 25 42 02 33 03 00 00 K3K3....t/B.3...
13CD:00A0 50 52 4F 47 52 41 4D 53-20 20 20 10 08 94 7D B5 PROGRAMS ...}.
13CD:00B0 4B 33 4B 33 00 00 80 B5-4B 33 44 02 00 00 00 00 K3K3....K3D.....

Answer 1

The date for the file STUDENT ASM in the root area dump is 10/13/1980.

Step-by-step explanation:

The date for the file STUDENT ASM can be found at offset 18 in the root area dump. The offset represents the memory location of the data and its length is 2 bytes, meaning it takes up 2 memory locations. From the provided bit pattern, we can determine the date in the format MM/DD/YYYY as follows:

Year = 1980 + Left 7 (binary representation)

Month = Middle 4 (binary representation)

Day = Right 5 (binary representation)

Using the given values, we can calculate the date for the file STUDENT ASM as 10/13/1980.