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{This example demonstrates the use of the segment_to_descriptor()
function.
It switches to VGA mode 13h (320x200x256 color), creates a selector
to the memory (based at $A000:0000), clears this memory with color
15 (white) and waits until the enter key is pressed }
uses go32;
var
vgasel : Word;
r : trealregs;
begin
{ set VGA mode 13h }
r.eax := $13; realintr($10, r);
{ allocate descriptor to VGA memory quickly; it could be done
with allocate_ldt_descriptors() too, but we would have to
initialize it by ourselves... unlike segment_to_descriptor()
which automatically sets the limit and the base address
correctly }
vgasel := segment_to_descriptor($A000);
{ simply fill the screen memory with color 15 }
seg_fillchar(vgasel, 0, 64000, #15);
{ wait for a return press }
readln;
{ back to text mode }
r.eax := $3; realintr($10, r);
{ don't deallocate vgasel, that can't be done }
end.
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