Assembly language

3) The following questions are set up in view of the Figures (d,e) a) Describe what type of I/O operation is carried out in Figure (d). What are the addresses of data lines, strobe output and busy input in the circuit. Assume that all unused address bits are zero. b) Write a program that will implement the sequence in Figure (e) for the circuit in ligure (d). Character data are held in memory starting at address PRNT BUFF and the number of characters held in the buffer is identified by the count at address CHAR-COUNT. Write comments and Use minimum number of instructions. ALE CE ADADADA A Icoa ICLK 0 OM 9999999 A - CE MU Port 1926 De DEN IND (d) Figure 7.13 (Continued Figure (d) Start Initialize character pointer and counter Yes Print busy? No Read a character for the buffer Output chatter to D.D. Output pulse STB update character address and Count of caracters No Printer buffer emoty 2 Yos Figure (e) Done 3) The following questions are set up in view of the Figures (d,e) a) Describe what type of I/O operation is carried out in Figure (d). What are the addresses of data lines, strobe output and busy input in the circuit. Assume that all unused address bits are zero. b) Write a program that will implement the sequence in Figure (e) for the circuit in ligure (d). Character data are held in memory starting at address PRNT BUFF and the number of characters held in the buffer is identified by the count at address CHAR-COUNT. Write comments and Use minimum number of instructions. ALE CE ADADADA A Icoa ICLK 0 OM 9999999 A - CE MU Port 1926 De DEN IND (d) Figure 7.13 (Continued Figure (d) Start Initialize character pointer and counter Yes Print busy? No Read a character for the buffer Output chatter to D.D. Output pulse STB update character address and Count of caracters No Printer buffer emoty 2 Yos Figure (e) Done