bda[0xE] is a 16-bit segment number,

not a real address. So shift 4. Reported by Silas. Jim McKie says this code only matters on ancient EISA MP systems.

bda[0xE] is a 16-bit segment number,
a6c4711a · rsc · fd6b0294 · a6c4711a
--- a/mp.c
+++ b/mp.c
@@ -59,7 +59,7 @@ mp_search(void)
  struct mp *mp;
  bda = (uchar*)0x400;
-  if((p = (bda[0x0F]<<8)|bda[0x0E])){
+  if((p = ((bda[0x0F]<<8)|bda[0x0E]) << 4)){
    if((mp = mp_search1((uchar*)p, 1024)))
      return mp;
  } else {