PC Support Handbook Contents

PC Support Handbook Contents

• 
  Computer Basics
  
• 
  Software & Data
  
• 
  Operating Systems
  
• 
  Numbering Systems
  
• 
  Computer Architecture
  
• 
  Display Technology
  
• 
  Computer Memory
  
• 
  Discs & Drives
  
• 
  Computer Peripherals
  
• 
  System Selection
  
• 
  Hardware Installation
  
• 
  P.C. Configuration
  
• 
  Windows Configuration
  
• 
  P.C. Support
  
• 
  Faultfinding
  
• 
  Computer Security
  
• 
  Data Communications
  
• 
  Local Area Networks
  
• 
  The Internet
  
• 
  Creating Websites
  
• 
  Multimedia
  

On Line Help

Writing a Program

Type in your program. It is best to get small parts of the program working rather than typing it all in at once.

Here is a simple example. Also look at the tutorial example programs. You can type this into the simulator or copy and paste it. The assembly code has been annotated with comments that explain the code. These comments are ignored by the assembler program. Comments begin with a semicolon and continue to the end of the line.

; ===== COUNT ================================================= MOV AL,0 ; Move 0 into the AL register REP: ; This label is used with jump commands ADD AL,2 ; Add two to AL JMP REP ; Jump back to the rep label END ; Program ends here ; =============================================================