Development of an interrupt demonstration unit

Τίτλος

Development of an interrupt demonstration unit

Θέμα

Intel 8085 (Microprocessor)

Computer software--Development

Δημιουργός

Agapiou, Stelios

Πηγή

Higher Technical Institute

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1991

Συνεισφέρων

Kassinopoulos, M.

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

eng

Τύπος

text

Αναγνωριστικό

EED0185

Σύνοψη

The primary purpose of this project is to demonstrate
the powerful interrupt structure offered by the 8085
microprocessor. This is achieved with the design and
construction of an Interrupts Demonstration Unit.
First the interrupts are examined, by considering a
microprocessor system as an example, and then the interrupt structure of the 8085 microprocessor is introduced. All the internal and external operations concerning the interrupts and the ways that they can be controlled are investigated and explained throughout.
Then according to the requirements of this project the
block diagram, of the unit to be constructed, is given with
a brief explanation on each section. Following this, the
operation of the unit is described.
The hardware design then follows, which is fully
explained, accompanied with the relevant schematic circuits.
The unit incorporates an 8085 microprocessor circuit and the appropriate interface from where the different interrupts are triggered. A keyboard is also provided which is use for selecting different functions of the program or to enable or disable the interrupts. For interfacing with the VDU, a circuit was constructed which performs a voltage level translation. On the VDU the messages for each interrupt activated are displayed.
After that the software developed for this purpose is
described in detail. It was designed so as to implement all
the features of the interrupts offered by the 8085
microprocessor.
The major conclusion that arises is that the interrupts
give more flexibility in designing a system and also they
save a considerable amount of time which is the most
important concept in any microprocessor application.