xdf_isopen
if (xdf_isopen(vdp, -1)) {
if (xdf_isopen(vdp, -1)) {
(!xdf_isopen(vdp, part)))
if (!xdf_isopen(vdp, part)) {
if (!xdf_isopen(vdp, part))
if (!xdf_isopen(vdp, part))
if (!xdf_isopen(vdp, part))
if (!xdf_isopen(vdp, part))
if (!xdf_isopen(vdp, part))
if (!xdf_isopen(vdp, part)) {
((flag & FEXCL) && xdf_isopen(vdp, part))) {
firstopen = !xdf_isopen(vdp, -1);