Direct i/o with blackbox?

From: Hof, Philipp <"Hof,>
Date: Tue, 21 Sep 2004 11:10:09 +1200

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Hello all,

Has anyone implemented a module that allows direct i/o?

Something equivalent to the
SYSTEM.PORTIN
SYSTEM.PORTOUT
functions in Oberon System 3

or equivalent to the following Pascal code snippets:

procedure outportb(portid : integer; value : BYTE);
Begin
  asm
    mov edx,portid
    mov al,value
    out dx,al
  end;
end;

function inportb(portid : integer) : byte;
Var value : byte;
Begin
  asm
    mov edx,portid
    in al,dx
    mov value,al
  end;
  inportb := value;
end;


Thanks, Philipp
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Received on Tue Sep 21 2004 - 01:10:09 UTC