io_pcopy.c

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/* console pcopy function */

#include "../fb.h"
#include "fb_private_console.h"
#include <go32.h>

int fb_ConsolePageCopy( int src, int dst )
{
        /* use current? */
        if( src < 0 )
                src = __fb_con.active;

        if( dst < 0 )
                dst = __fb_con.visible;

        if( src == dst )
                return fb_ErrorSetNum( FB_RTERROR_OK );

        /* do the copy */
        int cols, rows;
        fb_ConsoleGetSize( &cols, &rows );

        unsigned long srcAddr = fb_hGetPageAddr( src, cols, rows );
        unsigned long dstAddr = fb_hGetPageAddr( dst, cols, rows );

        _movedataw( _dos_ds, srcAddr, _dos_ds, dstAddr, cols * rows );

        return fb_ErrorSetNum( FB_RTERROR_OK );
}