STUPIDSID
1 (a)
What is stack? Explain the use and operation of stack and stack pointer?
5 M
1 (b)
What is an instruction queue? Explain?
5 M
1 (c)
Explain the flag register of 8085 microprocessor?
5 M
1 (d)
Explain the LOCK (bar) & TEST (bar) Signal?
5 M
2
Design a 8086 based system with following specifications
CPU at 10 Mhz in minimum mode operation
ii) 64 KB SRAM using 8 KB devices
iii) 16 KB EPROM using 4 KB devices
iv) One 8255 PPI for keyboard interface
Design system with absolute decoding. Clearly show memory address man and I/O address map. Draw a neat schematic for chip selection logic.
CPU at 10 Mhz in minimum mode operation
ii) 64 KB SRAM using 8 KB devices
iii) 16 KB EPROM using 4 KB devices
iv) One 8255 PPI for keyboard interface
Design system with absolute decoding. Clearly show memory address man and I/O address map. Draw a neat schematic for chip selection logic.
20 M
3 (a)
Explain the first five dedicated interrupts of 8086?
10 M
3 (b)
Explain with one example addressing modes of 8086?
10 M
4 (a)
Write 8086 assembly language program to move a string of words from offset 1000h to offset 6000h. The Length of the string is 0ch.
10 M
4 (b)
Explain the following directives CODE, ASSUME, ALINE, EQU, EVEN, Various Data & Model directives.
10 M
5 (a)
What are different multiprocessor configurations? Explain Closely Coupled Configuration?
10 M
5 (b)
Sketch and explain the interface of PPI 8255 to the 8086 microprocessor in minimum mode. Interface four 7 segment LEDs to display as a BCD counter.
10 M
6 (a)
Difference between a JMP instruction and CALL instruction.
5 M
6 (b)
Flag register of 8086.
5 M
6 (c)
Operation mode of 8237 DMA Controller.
5 M
6 (d)
Procedure of interfacing 8259 with CPU.
5 M
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