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include vmm.inc
 
VMMcall Is_Debug_Chr
jz      no_character            ; Z set if no character available
 
mov     byte ptr [Char], al     ; character from debugging device
 
The Is_Debug_Chr service checks for a character from the debugging device.
 
This service has no parameters.
 
Return Value
 
If the zero flag is clear, the AL register contains the character from the
debugging device. The zero flag is set if no character is available.
 
Comments
 
This service has no effect in the retail version of Windows. It is intended
to be used with the debugging version.
 
Uses
 
EAX, Flags
 
See Also
 
In_Debug_Chr
 
 
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