diff --git a/README b/README
index 70abe0a..b9a253a 100644
--- a/README
+++ b/README
@@ -21,6 +21,17 @@
 * pciutils-devel / pciutils-dev / libpci-dev
 * zlib-devel / zlib1g-dev
 
+To compile on Solaris, use the commands below:
+gmake LDFLAGS="-L$pathtolibpci -lpci -lz" CC="gcc -I$pathtopciheaders" CFLAGS=-O2
+
+To compile on DragonFly BSD, use the commands below:
+ln -s /usr/pkg/include/pciutils pci
+gmake CFLAGS=-I. LDFLAGS="-L/usr/pkg/lib -lpci -lz"
+
+To compile and run on Darwin/Mac OS X:
+Install DirectIO from coresystems GmbH.
+DirectIO is available at http://www.coresystems.de/en/directio
+
 
 Usage / Options
 ---------------
diff --git a/flash.h b/flash.h
index c50ba30..f49b808 100644
--- a/flash.h
+++ b/flash.h
@@ -30,6 +30,14 @@
 #include <stdint.h>
 #include <stdio.h>
 
+/* for iopl and outb under Solaris */
+#if defined (__sun) && (defined(__i386) || defined(__amd64))
+#include <strings.h>
+#include <sys/sysi86.h>
+#include <sys/psw.h>
+#include <asm/sunddi.h>
+#endif
+
 #if (defined(__MACH__) && defined(__APPLE__))
 #define __DARWIN__
 #endif
@@ -50,6 +58,15 @@
     #define off64_t off_t
     #define lseek64 lseek
 #endif
+#if defined (__sun) && (defined(__i386) || defined(__amd64))
+  /* Note different order for outb */
+  #define OUTB(x,y) outb(y, x)
+  #define OUTW(x,y) outw(y, x)
+  #define OUTL(x,y) outl(y, x)
+  #define INB  inb
+  #define INW  inw
+  #define INL  inl
+#else
   #define OUTB outb
   #define OUTW outw
   #define OUTL outl
@@ -57,6 +74,7 @@
   #define INW  inw
   #define INL  inl
 #endif
+#endif
 
 static inline void chip_writeb(uint8_t b, volatile void *addr)
 {
diff --git a/flashrom.c b/flashrom.c
index 36d145f..2c77ff3 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -30,13 +30,6 @@
 #include <stdlib.h>
 #include <getopt.h>
 #include <pci/pci.h>
-/* for iopl */
-#if defined (__sun) && (defined(__i386) || defined(__amd64))
-#include <strings.h>
-#include <sys/sysi86.h>
-#include <sys/psw.h>
-#include <asm/sunddi.h>
-#endif
 #include "flash.h"
 
 char *chip_to_probe = NULL;