# Question Papers of IGNOU MCA-NEW MCS012

 MCS012: Computer Organisation and Assembly LanguageYear: 2005 TEE: December Time 3 Full Marks 100 Note: Question 1 is compulsory. Answer any three from the rest.Q.1(a): Perform the following arithmatic operation using 8-bit registers utilising signed 2's complement representation. Indicate the overflow, if any.(i) 75+53(ii) (-75)-53(iii) (-53)-(-13)(iv) 53+(-13) Q.1(b): A digital computer has a memory unit of 64 K x 16 and a cache memory of 1 K words. The cache uses direct mapping with a block size of four words.(i) How many bits are there in the tag, index, block and word fields of the address format?(ii) How ma: [7]Q.1(c): What is an assembler? How does a two-pass assembler work?: [3]Q.1(d): A 36-bit floating point binary number has eight bits plus sign bit for the expoent and 26 bits plus sign bit for mantissa. The mantissa is a normalized fraction. Assume signed magnitude representation for numbers. What are the largest and smallest positiv: [5]home || Next >>