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A Motorola 68000 microprocessor-based data acquisition system incorporates memory ( EPROMS and SRAMS), an Analog-to-Digital Converter (A/D), a Centronics Parallel Printer, and a very simple I/I Device made up of a single push-button switch. There is a total of 8K Bytes of EPROM and 8K Bytes of SRAM. The A/D is microprocessor-compatible. The push-button switch will be used to cause interrupt to the microprocessor. The A/D and Printer are 8-bit devices.?The switch's interrupt to the microprocessor is via INTERRUPT level 6. Even though the interrupting push-button switch does NOT support VECTORED interrupt, a vectored interrupt scheme will be used where some external circuitry will be used to generate the interrupt vector (NOT autovector). An interrupt vector of 70 (decimal) will be generated during IACK.?The system works as follows. The microprocessor sits in a dummy loop. When push-button switch is struck, it interrupts the microprocessor. The interrupt subroutine accomplishes the following tasks. The microprocessor commands the A/D to convert, polls for end of conversion and reads a byte. A copy of the byte is sent to memory. The microprocessor polls the Printer and prints the byte. The system then goes back to the dummy loop until another keystroke occurs and the interrupt process repeats to process another byte. After 32 push-button strikes and 32 interrupts, the microprocessor no longer accepts interrupt from the push-button.
A. Write the 68000 assembly language routine that represents the initialization of the vector table. Specify your own addresses for whatever parameters you need.
B. Write the collection of the 68000 assembly language routines that together from the Interrupt Subroutine for the push-button switch. Please provide meaningful comments for your programs. Modularize you program so that it is very clear which section is accomplishing what task.
A coil with impedence 8+j6Ω is connected in series with a capacitive reactance X. The series combination is connected in parallel with a resistor R. given that the equivalent impedence of the resulting circuit is 5/_0'Ω, find the value of R and X.
1.Calculate motor speed in revolutions per minute for an eight-pole,50Hz motor. Give the equation and identify its parts; show your math. 2.You need to detect finished products coming down an assembly line.
1) What is the difference between a continuous spectrum and a line spectrum 2) What is the fundamental difference between a continuous signal and a discrete signal 3) Why are linear time invariant (LTI) systems so important in engineering and enginee..
In most situations it is also desirable to send information from the process to be controlled--in this case the 500-gallon tank--to a central station for processing and storage. This information can be transmitted and processed in different ways.
Obtain a minimized equation for the function F(X,Y,Z)=Σ(0,1,3) + Σmd(5,6,7) then draw a schematic to implement the minimized function in SOP form using AND, OR and inverters. Draw a schematic implementing the function using only NOR and inverters.
Let y1(t)=y2(t)=t-1 over 0
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The general expression for an idealized uniform plane water wave propagating in the +x direction is h(x,t) = Acos(wt - kx + phi) m where h represents the height of water particles at the water surface above the unpurturbed or quiescent water surface ..
Consider a thin ring of radius a with uniform charge density and total charge Q. The ring is cut in half across the diameter and the two halves superimposed to double the effective charge density.
Write an assembly program to calculate sum of number10 through 25
A generator provides the following voltage signal: v(t) = 2 + 3 sin(100pi) + 4 cos(250pi). Find the average value of the function. Note: pi = 3.1416 in this equation.
A transmission line operating at 125 MHz has Zo = 40 Ω, α = 0.02 (Np/rn), and ß = 0.75 rad/m. Find the line parameters R', L', C', and G'.
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