a. Discuss with examples the main difference between system programming and application programming and explain in your own words how each of these can be carried out in the computer system. 10 marks b. With your knowledge in memory addressing modes and using the given opcodes LDA=00 0000 0000 (00) Buffer= 1000 0 What will be the content of the address loaded into the accumulator? (5 marks) c. b. With your knowledge in memory addressing mods and using the given opcodes STCH=0X54 0101 0100 (00) What will be target address? (5 marks) 000 1000 0000 0000 0 (x) 011 0000 0000 0000 0 c. Briefly explain the usage of the JSUB and RSUB instruction sets in an SIC architecture coding 5 marks