STUPIDSID
1 (a)
Explain register architecture of ARM processor?
5 M
1 (b)
Write a program in 8085 to convert a 8 bit ninary number stored at 1000H into equivalent gary number. Store the gray number at the same location
5 M
1 (c)
Explain hardware connection for accessing external code memory using 8051
5 M
1 (d)
Explain following assembler directives of ASM51
(i) DBIT (ii) DS (iii) Extrn (iv) public (v) ORG
(i) DBIT (ii) DS (iii) Extrn (iv) public (v) ORG
5 M
2 (a)
Interface 8155 with 8085 in simple I/O mode. Generate triangular waveform using DAC 0808. the output voltage should swing between 0-5V
10 M
2 (b)
Explain interrupt structure of 8085 and interrupt related instructions
10 M
3 (a)
Write a program in 8085 to generate a square wave of 100 Hz frequency on the SOD pin . Assume 1 Mhz operating frequency
10 M
3 (b)
Explain block diagram of 8155 with control word format and data transfer between 8085 and 8155 in handshaking mode
10 M
4 (a)
Explain block diagram of 8255 with BSR and I/O modes to interface it with 8085
10 M
4 (b)
Explain timing diagram of memory read/ write and I/O read/ write cycles of 8085
10 M
5 (a)
Explain how 8051 interrupt structure allows single step execution also explain implementation of single step operation
10 M
5 (b)
Explain following pins and instruction of 8051
1. EA 2. PSEN 3. SWAP 4. DAA 5. SUBB
1. EA 2. PSEN 3. SWAP 4. DAA 5. SUBB
10 M
6 (a)
Explain addressing modes of 8051 with examples
10 M
6 (b)
Explain different Timer modes of operations for 8051
10 M
7 (a)
Explain generation of control signals for 8085 microprocessor
5 M
7 (b)
Explain the flag register (PSW) of 8051
5 M
7 (c)
Design 8031 based an instrusion warning using interrupts that sounds a 400 Hz tone for 1 second (using a loudspeaker connected to P1.7) whenever a door sensor connected to (INTO bar) makes a high to low transition.
10 M
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