1. Engineering
  2. Computer Science
  3. 3 memory location 0490h through 0493h contain respectively obh 9bh...

Question: 3 memory location 0490h through 0493h contain respectively obh 9bh...

Question details

3. Memory location 0490H through 0493H contain, respectively, OBH, 9BH, A2H, and 78H. What does AX contain after each instruction? (Assume that SI-0490H BP-0002H, DS-0000H) (a) MOV AX, [SI] ; (b) MOV AX, ISI+1]; (c) MOV AX, [SI][BP] ; (d) MOV AX, 0490H; (e)MOV AX, [SI+BP+11 4. Write the instructions needed to program the 8251 for working in the foll owir mode (Assume the address of the control port is 80H) (a) Asynchronous mode, 7 data bits, odd parity, X16 clock, 2 stop bits. b) Asynchronous mode, 8 data bits, no parity, X16 clock, 1 stop bit. (e) Synchronous mode, 7 data bits per character, X64 clock
Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution