A microprocessor-based system is used to transfer 8-bytes of data beginning from memory location 1070011 to port B of 8255 PPI each time an interrupt requests signal transition from 0 to 1. The interrupt type 50H is generated by using 74244 tri state buffer. (a) Design the circuit with the following addresses: control register of 8255-93H and port B-91H. (b) Write an 8088 program to drive the circuit assuming that CS-DS-1000H, SS-4000H, Main program offset is 200H, Interrupt service routine code segment is 2000H, Interrupt-service routine offset is 1000H, and the stack has an offset of 500H from the current stack segment.
A microprocessor-based system is used to transfer 8-bytes of data beginning from memory location 1070011 to port B of 8255 PPI each time an interrupt requests signal transition from 0 to 1. The interrupt type 50H is generated by using 74244 tri state buffer. (a) Design the circuit with the following addresses: control register of 8255-93H and port B-91H. (b) Write an 8088 program to drive the circuit assuming that CS-DS-1000H, SS-4000H, Main program offset is 200H, Interrupt service routine code segment is 2000H, Interrupt-service routine offset is 1000H, and the stack has an offset of 500H from the current stack segment.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Digital system design
Transcribed Image Text:A microprocessor-based system is used to transfer 8-bytes of data beginning from memory location
10700II to port B of 8255 PPI each time an interrupt requests signal transition from 0 to 1. The interrupt
type 50H is generated by using 74244 tri state buffer.
(a) Design the circuit with the following addresses: control register of 8255-93H and port B-91H.
(b) Write an 8088 program to drive the circuit assuming that CS-DS-1000H, SS-4000H, Main
program offset is 200H, Interrupt service routine code segment is 2000H, Interrupt-service routine
offset is 1000H, and the stack has an offset of 500H from the current stack segment.
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