STUPIDSID
1 (a)
Explain the reset state of 8085 microprocessor and 8051 microcontroller
5 M
1 (b)
Explain the CPSR register of ARM7 processor.
5 M
1 (c)
Explain the terms T state, Machine cycle and Instruction cycle related to 8085 processor
5 M
1 (d)
Explain RAM memory organization of 8051 microcontroller
2 M
2 (a)
Design 8085 based system with following specifications
i) CPU operating at 3 MHz
ii) 16 KB EPROM using 4 KB devices
iii) 16 KB SRAM using 8 KB devices
iv) One 8 bit input and one 8 bit output port performing simple I/O data transfer in I/O mapped I/O mode.
Give its memory mapping and I/O mapping and use exhaustive decoding approach.
i) CPU operating at 3 MHz
ii) 16 KB EPROM using 4 KB devices
iii) 16 KB SRAM using 8 KB devices
iv) One 8 bit input and one 8 bit output port performing simple I/O data transfer in I/O mapped I/O mode.
Give its memory mapping and I/O mapping and use exhaustive decoding approach.
10 M
2 (b)
Draw and explain the Timer/Counter block of 8051 microcontroller.
10 M
3 (a)
Explain the following ARM instructions
i) ADDEQ R0, R1, R2
ii) MLA R4,R3,R2,R1
iii) TST R2, R3
iv) BLX R0
v) RSB r2, r3, r1, LSL #2
i) ADDEQ R0, R1, R2
ii) MLA R4,R3,R2,R1
iii) TST R2, R3
iv) BLX R0
v) RSB r2, r3, r1, LSL #2
10 M
3 (b)
Write a program to transmit "HAPPY" serially on Tx pin of 8051 microcontroller with a baud rate of 9600. Assume crystal frequency of 11.0592 MHz.
10 M
4 (a)
Draw and explain the interrupt structure of 8085 processor in detail.
10 M
4 (b)
Write a program to transmit "HAPPY" serially on SOD pin of 8085 processor at a baud rate of 9600. Assume operating frequency of 8085 as 3 MHz.
10 M
5 (a)
Draw timing diagram for JNZ C000H instruction.
10 M
5 (b)
With the help of timing diagram explain input data transfer using handshake signals of 8255.
10 M
6 (a)
Interface 16x2 LCD display to 8051 microcontroller and display a single character "H" on it
10 M
6 (b)
Write a program to generate a square wave of 2 kHz using 8155 timer. Timer operates at 3 MHz
10 M
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