Skip to content Skip to navigation Skip to collection information

Connexions

You are here: Home » Content » Introduction to the Texas Instruments ez430 » 2.3 - Lab 2: Introduction to Assembly Language

Navigation

Lenses

What is a lens?

Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

This content is ...

Affiliated with (What does "Affiliated with" mean?)

This content is either by members of the organizations listed or about topics related to the organizations listed. Click each link to see a list of all content affiliated with the organization.
  • TI MSP430 display tagshide tags

    This module and collection are included inLens: Texas Instruments MSP430
    By: Texas Instruments

    Comments:

    "This is the entire course organized at Rice University for all the basic lessons for using an MSP430. It is designed for the use of an eZ430 tool and is still under construction."

    "Basic instructions and code for assembly programming."

    Click the "TI MSP430" link to see all content affiliated with them.

    Click the tag icon tag icon to display tags associated with this content.

Recently Viewed

This feature requires Javascript to be enabled.

Tags

(What is a tag?)

These tags come from the endorsement, affiliation, and other lenses that include this content.
 

2.3 - Lab 2: Introduction to Assembly Language

Module by: Naren Anand. E-mail the author

Based on: Lab 3: Introduction to Assembly Language by CJ Ganier

Summary: A lab that introduces a student to assembly language programming.

In this lab you will be asked to write simple assembly statements, follow already written assembly statements, and finally to reproduce the SOS light blinking program from Lab 1 in assembly.

Exercise 1

Formulate instructions to do the following things:

  1. Set bit 3 to 1 at the memory address 0xd640 while leave bits 0-2 and 4-16 unaffected.
  2. Jump to the instruction labeled POINT if the carry bit is set.
  3. Shift register R6 right one place while preserving the sign.

Exercise 2

Examine this loop: 


... more instructions... 	
Mov.w  &I,  R4  
Cmp.w  #0x0000, R4 
JZ    After_loop

Start_loop:
Dec.w   #0x0001, R4	 
JZ  After_loop
BR #Start_loop

After_loop:
...more instructions...
  1. How many times will this loop execute?
  2. Why do we use the BR instruction with a #Start_loop, but with the JZ we use a plain After_loop?
  3. What does the first JZ instruction do? If we did not have this initial Cmp and JZ, what (possibly) inadvertent effect might occur?

Exercise 3

Re-write the blinking light program from Lab 1 using assembly code instead. As you may recall, the program must blink "SOS" (which is "... --- ...") and conform to the following Morse Code standards:

  • The ammount of time of a dash is equivalent in length to 3 dots.
  • The ammount of time between parts of a letter is equivalent in length to one dot.
  • The ammount of time between letters is equivalent in length to 3 dots.
  • The ammount of time between words (assume each SOS is a word) is equivalent to 5 dots.

Collection Navigation

Content actions

Download:

Collection as:

PDF | EPUB (?)

What is an EPUB file?

EPUB is an electronic book format that can be read on a variety of mobile devices.

Downloading to a reading device

For detailed instructions on how to download this content's EPUB to your specific device, click the "(?)" link.

| More downloads ...

Module as:

PDF | EPUB (?)

What is an EPUB file?

EPUB is an electronic book format that can be read on a variety of mobile devices.

Downloading to a reading device

For detailed instructions on how to download this content's EPUB to your specific device, click the "(?)" link.

| More downloads ...

Add:

Collection to:

My Favorites (?)

'My Favorites' is a special kind of lens which you can use to bookmark modules and collections. 'My Favorites' can only be seen by you, and collections saved in 'My Favorites' can remember the last module you were on. You need an account to use 'My Favorites'.

| A lens I own (?)

Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

| External bookmarks

Module to:

My Favorites (?)

'My Favorites' is a special kind of lens which you can use to bookmark modules and collections. 'My Favorites' can only be seen by you, and collections saved in 'My Favorites' can remember the last module you were on. You need an account to use 'My Favorites'.

| A lens I own (?)

Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

| External bookmarks