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The as88 (8088 Assembly compiler), aquired from http://www.ics.uci.edu/~bic/courses/51/
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README.md

Installing and Getting Started with the 8088 Assembler And Tracer Toolkit (v. 1.0)

Intel-based Linux version

NOTE: If at any point while installing the software supplied on this CD, you are presented with an error message that states you do not have the correct privileges or permissions to install the software, you will need to log off and then log on as the Administrator (or as another user with administrative permissions). If you are installing this software at a company, educational institution, or other organizational site, you may need to ask your system administrator for assistance or for an appropriate password.

To install this software on Intel-based Linux systems, follow these steps:

I. Copying the 8088 Assembler and Tracer Toolkit to your Hard Disk

  1. If you have not done so already, create a directory named tracer on your hard disk. This is where you will place all the software in the 8088 Assembler and Tracer Toolkit.

  2. If you have not done so already, browse the CD-ROM to the /8088_tracer/linux directory, and copy all of its contents to the new tracer directory you just created on your hard disk.

  3. Make sure the following directories and files now exist within your new tracer directory:

Directories:

as_src/
bin/
examples/
exercises/
trce_src/

Additional files in the main tracer directory:

asinstal.bat
README.txt
release.txt
syscalnr.h

II. Testing the 8088 Assembler and Tracer toolkit

  1. Change to the /tracer/examples directory.

  2. Run the first example program. Type:

     ./t88 HlloWrld
    

III. Getting started with the 8088 Assembler and Tracer toolkit

A. INTRODUCTION

This section contains notes intended to help you quickly begin working with the 8088 Assembler and Tracer Toolkit. For more detailed instructions, please see Appendix C of the book.

Within the tracer directory, you can find precompiled sources in the bin subdirectory. For your convenience, copies of the binaries also appear in the examples and exercise subdirectories.

Source code for the assembler is in the subdirectory as_src.

Source code for the interpreter s88 and debugger-tracer t88 is in the subdirectory trce_src.

The only important difference between the interpreter s88 and the tracer t88 is that the interpreter does not display the tracer window, and does not accept tracer commands from standard input. All other steps independent of the tracing process are identical.

B. COMPILATION

C-based source files are provided in the event you ever need to recompile this software. On Unix and Linux platforms, the command "make" should recompile the sources and place the binaries in the directories "bin", "examples", and "exercise."

To recompile, you need a working C compiler installed. If you have one, you can compile by typing:

asinstal

After you compile, either move your executable files to a program directory, or change the PATH variable to make the assembler as88 and the tracer t88 visible from the directories containing the assembly source codes.

C. CREATING BINARIES

Assembler source files have an extension ".s". To create a binary for a source named "project.s", enter the command:

as88 project

This performs the assembly, and generates three files:

  • project.88 — The 8088 binary
  • project.# — A file which links the file positions in the source file to the positions in the binary file
  • project.$ — A copy of the source file which contains included secondary sources and satisfies preferred conventions for the assembly process

The tracer subwindow for the source file displays the "project.$" version.

D. TRACING

To trace a file, use the command t88. For example, to trace a file named "project," enter the command:

t88 project

This displays the registers, stack, portions of memory, and other information in a set of windows, enabling you to observe execution.

The tracer executes exactly on assembler command when the return key is hit. To stop execution, type the command "q", followed by a return. Execution stops on its own when the process itself exits.

To interpret a file without displaying the tracer window, use the s88 Command. For example, to interpret a file named "project," enter the command:

s88 project

The entire assembler project uses command line terminal windows. This is commonplace on Posix compliant systems, but less typical for Windows platforms.

Additional notes on the current implementation, known bugs, and restrictions can be found in the file release.txt in this directory.

Good Luck, Evert Wattel (evert@cs.vu.nl or e.wattel@few.vu.nl) Vrije Universiteit, Amsterdam

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