Slide 9.5: This book's link library (cont.)

This Book's Link Library (Cont.)

IsDigit
It determines whether the character in AL is a valid decimal digit. It sets the Zero flag if AL contains a valid decimal digit; otherwise, the flag is clear.

WriteBin
It writes an integer to the console window in ASCII binary format. Pass the integer in EAX.

WriteChar
It writes a single character to the console window. Pass the character in AL.

WriteDec
It writes a 32-bit unsigned integer to the console window in decimal format with no leading zeros. Pass the integer in EAX.

WriteHex
It writes a 32-bit unsigned integer to the console window in 8-digit hexadecimal format. Leading zeros are inserted if necessary. Pass the integer in EAX.

WriteInt
It writes a 32-bit signed integer to the console window in decimal format with a leading sign and no leading zeros. Pass the integer in EAX.

WriteString




It writes a null-terminated string to the console window.  
Pass the string's offset in EDX.







 
  
    WriteDec
    WriteHex
    WriteInt
  
  
   
    
      .code
 mov   eax, -128
 call  WriteDec
    
   
   
    
      .code
 mov   eax, -128
 call  WriteHex
    
   
   
    
      .code
 mov   eax, -128
 call  WriteInt
    
   
  
  
    Output
    Output
    Output

`WriteDec`	`WriteHex`	`WriteInt`
.code mov eax, -128 call WriteDec	.code mov eax, -128 call WriteHex	.code mov eax, -128 call WriteInt
Output	Output	Output