On 05 May 2009, at 06:21, leledumbo wrote:
I'm almost there to have Write(Ln) works for my OS. I've made
SysInitStdIO
call OpenStdIO(Output,fmOutput,StdOutputHandle); and calling
Write(Ln) gives
no error (i.e. IOResult = 0). But where does it actually write to?
If I can
access the buffer, I can display it on the screen.
It writes to whatever the text file variable called "stdout" in rtl/
inc/systemh.inc is assigned to. Standard I/O is indeed buffered, see
the routines in rtl/inc/text.inc. The actual writing from the buffer
to the associated file/device is done by FileWriteFunc(), which calls
Do_Write() (the latter is an OS-specific function that you have to
implement).
Also note that if textrec.FlushFunc is nil, then write(ln) will not
automatically flush after each operation. As you can see in
FileOpenFunc(), it is only assigned in case Do_Isdevice() returns true
for the handle of the opened "file".
Jonas
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