239 struct capabilities {  struct
251 	/* read capabilities */  argument
269 	/* write capabilities */  argument
278 	/* write capabilities */  argument
279 	uchar_t resv4		: 2;
280 	uchar_t dvdram_write	: 1;
281 	uchar_t dvdr_write	: 1;
282 	uchar_t resv3		: 1;
283 	uchar_t testwrite	: 1;
284 	uchar_t cdrw_write	: 1;
285 	uchar_t cdr_write	: 1;
287 	uchar_t misc0;
288 	uchar_t misc1;
289 	uchar_t misc2;
290 	uchar_t misc3;
291 	uchar_t obsolete0[2];
292 	uchar_t numvlevels[2];
293 	uchar_t bufsize[2];
294 	uchar_t obsolete1[4];
295 	uchar_t resv5;
296 	uchar_t misc4;
297 	uchar_t obsolete2;
298 	uchar_t copymgt[2];