--- trunk/src/devices/dev_sgi_ip32.c	2007/10/08 16:19:05	17
+++ trunk/src/devices/dev_sgi_ip32.c	2007/10/08 16:19:11	18
@@ -25,7 +25,7 @@
  *  SUCH DAMAGE.
  *   
  *
- *  $Id: dev_sgi_ip32.c,v 1.32 2005/08/19 09:43:35 debug Exp $
+ *  $Id: dev_sgi_ip32.c,v 1.34 2005/10/27 14:01:14 debug Exp $
  *  
  *  SGI IP32 devices.
  *
@@ -110,23 +110,22 @@
 	uint64_t relative_addr, unsigned char *data, size_t len,
 	int writeflag, void *extra)
 {
-	int i;
 	struct crime_data *d = extra;
-	uint64_t idata;
+	uint64_t idata = 0;
+	int i;
 
-	idata = memory_readmax64(cpu, data, len);
+	if (writeflag == MEM_WRITE)
+		idata = memory_readmax64(cpu, data, len);
 
 	/*
 	 *  Set crime version/revision:
 	 *
-	 *  This might not be the most elegant or correct solution,
-	 *  but it seems that the IP32 PROM likes 0x11 for machines
-	 *  without graphics, and 0xa1 for machines with graphics.
-	 *
-	 *  NetBSD 2.0 complains about "unknown" crime for 0x11,
-	 *  but I guess that's something one has to live with.
+	 *  This might not be the most elegant or correct solution, but it
+	 *  seems that the IP32 PROM likes 0x11 for machines without graphics,
+	 *  and 0xa1 for machines with graphics.
 	 *
-	 *  (TODO?)
+	 *  NetBSD 2.0 complains about "unknown" crime for 0x11, but I guess
+	 *  that's something one has to live with.  (TODO?)
 	 */
 	d->reg[4] = 0x00; d->reg[5] = 0x00; d->reg[6] = 0x00;
 	d->reg[7] = d->use_fb? 0xa1 : 0x11;
@@ -344,7 +343,9 @@
 	uint64_t idata = 0, odata=0;
 	int regnr, res = 1;
 
-	idata = memory_readmax64(cpu, data, len);
+	if (writeflag == MEM_WRITE)
+		idata = memory_readmax64(cpu, data, len);
+
 	regnr = relative_addr / sizeof(uint32_t);
 
 	/*  Read from/write to the macepci:  */
@@ -775,7 +776,9 @@
 	uint64_t idata = 0, odata = 0;
 	int regnr;
 
-	idata = memory_readmax64(cpu, data, len);
+	if (writeflag == MEM_WRITE)
+		idata = memory_readmax64(cpu, data, len);
+
 	regnr = relative_addr / sizeof(uint64_t);
 
 	/*  Treat most registers as read/write, by default.  */