HW5-3750

HW5-3750 - 1 EE 3750 Homework 5 due Wed., May 3, 2006 For...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 OVER EE 3750 — Homework 5 due Wed., May 3, 2006 For all problems: state any assumptions made; include comments as needed to make assembly instruction sequences clear. 1. Write an interrupt service routine for an 8086 to input a word of data from device DEV6, then store it in array ORANGE if the value of the data is odd. Assume that word variable POINTER holds the offset to which the next word is to be stored in ORANGE. Let the address of the input data port of DEV5 be 6CCH. The interrupt service routine should input only one word on each interrupt from DEV6. 2. Write an 8086 instruction sequence to enable interrupts when Port B of an 82C55 (parallel interface) is ready for output where Group B is in Mode 1. Assume that the modes and input/output directions of the 82C55 have already been initialized. Let B8H be the lowest port address for this 82C55. 3. Write an 8086 instruction sequence to initialize a 16550 UART (serial interface). Set
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/25/2012 for the course EE 3750 taught by Professor Desouza during the Fall '08 term at LSU.

Page1 / 2

HW5-3750 - 1 EE 3750 Homework 5 due Wed., May 3, 2006 For...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online