Intel XENIX 286 Programmers Guide (86) - Tenox.tc

adb: Program Debugger XENIX Programming
Using XENIX Commands
You can execute XENIX commands without leaving adb by using the adb escape
command !. The escape command has the form
command
where command is the XENIX command you wish to execute. The command must have
any required arguments. adb passes this command to the system shell, which executes
it. When finished, the shell returns control to adb.
For example, to display the date, type
! date
The system displays the date at your terminal and returns control to adb.
Computing Numbers and Displaying Text
You can perform arithmetic calculations while in adb by using the = command. The
command directs adb to display the value of an expression in a given format.
The command is often used to convert numbers in one base to another, to double-check
the arithmetic performed by a program, and to display complex addresses in simpler
form. For example, the command
Ox2a = d
displays the hexadecimal number Ox2a as the decimal nu mber 42, but
Ox2a = c
displays it as the ASCII character "*"· Expressions in a com mand may have any
combination of symbols and operators. For example, the command