From: rsc <rsc>
Date: Wed, 28 Nov 2007 20:17:04 +0000 (+0000)
Subject: bda[0xE] is a 16-bit segment number,
X-Git-Url: https://git.devinivas.org/?a=commitdiff_plain;h=a6c4711a38d3f8f3a4737558a4682ea38fcfaa7a;p=cs3210-lab1.git

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.
---

diff --git a/mp.c b/mp.c
index af9e72b..1015de9 100644
--- 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 {