*iarg = 0;
                status = ks0127_read(ks, KS_STAT);
                if (!(status & 0x20))            /* NOVID not set */
-                       *iarg = (*iarg & DECODER_STATUS_GOOD);
+                       *iarg = (*iarg | DECODER_STATUS_GOOD);
                if ((status & 0x01))                  /* CLOCK set */
-                       *iarg = (*iarg & DECODER_STATUS_COLOR);
+                       *iarg = (*iarg | DECODER_STATUS_COLOR);
                if ((status & 0x08))               /* PALDET set */
-                       *iarg = (*iarg & DECODER_STATUS_PAL);
+                       *iarg = (*iarg | DECODER_STATUS_PAL);
                else
-                       *iarg = (*iarg & DECODER_STATUS_NTSC);
+                       *iarg = (*iarg | DECODER_STATUS_NTSC);
                break;
 
        //Catch any unknown command