AM2: Protected-Mode Programming
AM2: Protected-Mode Programming
AM2: Protected-Mode Programming
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ECP4166: Advanced Microprocessors<br />
<strong>AM2</strong><br />
BUFFER_SIZE = 5000<br />
.data<br />
fileHandle DWORD ?<br />
buffer BYTE BUFFER_SIZE DUP(?)<br />
.code<br />
mov eax,fileHandle<br />
mov edx,OFFSET buffer<br />
mov ecx,BUFFER_SIZE<br />
call WriteToFile<br />
The following pseudocode describes how to handle the value returned in EAX after calling<br />
WriteToFile:<br />
if EAX = 0 then<br />
error occurred when writing to file<br />
call WriteWindowsMessage to see the error<br />
else<br />
EAX = number of bytes written to the file<br />
endif<br />
Example 2<br />
The following program creates a file in output mode, asks the user to enter some text, writes<br />
the text to the output file, reports the number of bytes written, and closes the file. It checks<br />
for errors after attempting to create the file:<br />
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