Journals

CodeBreakers Journal
Assembly Programming Journal

Journal Issues

Vol.1, No.1, 2007
Issue 9 (1998-2001)
Issue 8 (1998-2001)
Issue 7 (1998-2001)
Issue 6 (1998-2001)
Issue 5 (1998-2001)
Issue 4 (1998-2001)
Issue 3 (1998-2001)
Issue 2 (1998-2001)
Issue 1 (1998-2001)

Statistics

Members: 1927
News: 293
Web Links: 1
Visitors: 3932651

Who's Online

Damn Vulnerable LinuxDamn Vulnerable Linux (DVL) is a Linux-based (modified Damn Small Linux) tool for IT-Security & IT-Anti- Security and Attack & Defense. [CLICK HERE FOR MORE INFOS! ]

Featured Conference Video

T16-Recon2006-Joe_Stewart-OllyBonE.gif OllyBone - Semi-Automatic Unpacking on IA-32. View the conference video here!
Home arrow Submit Your Paper!
IsASCII?
User Rating: / 0
PoorBest 
Written by Troy Benoist   


;Summary: Routine to test whether value in AH is ASCII or not (0-127d = ASCII)
;Compatibility: All DOS versions
;Notes: 4 BYTES! Input: AH=value to check.
    cmp ah,80         ;8DFC80 Compare value in AH to 128 and set flags.
    salc         ;D6     Set AL=FF if CF=1, or set AL=0 if CF=0.
;REGISTERS DESTROYED: AL    RETURNS: AL=0 if AH is not ASCII, FF is so.