1) Write the following MARIE assembly language equivalent of the following machine language instructions

a) 0011 1000 1001 0111

b) 0110 0000 0000 0000

c) 1000 0000 0000 0000

d) 0100 0001 0010 0011

2) List the hexadecimal code for the following program.

Hex Address Label Instruction Hexadecimal Code

100 - - - - - - - - - - - - - - - -Load A - - - - - - - - - - - - - -

101 - - - - - - - - - - - - - - - Add ONE - - - - - - - - - - - -

102 - - - - - - - - - - - - - - - Jump S1 - - - - - - - - - - - -

103 - - - - - S2 , - - - - - - Add ONE - - - - - - - - - - -

104 - - - - - - - - - - - - - - -Store A - - - - - - - - - - - - -

105 - - - - - - - - - - - - - - - Halt - - - - - - - - - - - - - - -

106 - - - - - S1 , - - - - - - Add A - - - - - - - - - - - - -

107 - - - - - - - - - - - - - - - Jump S2 - - - - - - - - - - -

108 - - - - - A , - - - - - - HEX 0020 - - - - - - - - -

109 - - - - - ONE , - - - - HEX 0001 - - - - - - - - - -

3) Suppose that a 8M X 16 main memory is built using 1M X 8 RAM chips and memory is word addressable.

a) How many RAM chips are necessary?

b) How many RAM chips are needed for each memory word? _______

c) How many address bits are needed for each RAM chip? _______

d) How many address bits are needed for all memory? _______