+ v = reg[WINV] << 3 & 0xf8;
+ if((reg[WINV] & 0x80) != 0 ? vdpy < v : vdpy >= v){
+ lwin = 0;
+ rwin = reg[WINH] << 4 & 0x1f0;
+ if((reg[WINH] & 0x80) != 0){
+ lwin = rwin;
+ rwin = 320;
+ }
+ }else{
+ lwin = 0;
+ rwin = 320;
+ }
+ if(rwin > lwin){
+ p = pctxt + 2;
+ p->tx = p->ty = 0;
+ v = vdpy - v;
+ p->tny = vdpy & 7;
+ p->ty = vdpy >> 3 & pctxt[2].h - 1;
+ tile(p);
+ }