diff -ru Makefile.orig Makefile
--- Makefile.orig	Wed Feb 18 10:51:27 1998
+++ Makefile	Wed Feb 18 10:50:46 1998
@@ -18,7 +18,7 @@
 # -DDEBUGGER         compiles in the debugger
 # -DKBUK             if you have a UK style 102 key keyboard
-# -DBIG_ENDIAN       if your computer is big-endian (Sparc, 68000 etc)
-# -DLITTLE_ENDIAN    if your computer is little-endian (80x86 etc)
+# -DCPU_BIG_ENDIAN       if your computer is big-endian (Sparc, 68000 etc)
+# -DCPU_LITTLE_ENDIAN    if your computer is little-endian (80x86 etc)
 # -DALIGNED_ACCESS   if your computer requires words to be on even boundaries
 # -DBIGCASE          If your compiler/computer can handle 256 case switches
 #
@@ -53,7 +53,7 @@
 
 CC      = gcc
 #OPTIONS = -DBOOT720 -DBIG_ENDIAN -DALIGNED_ACCESS -DBIGCASE -DINLINE_FUNCTIONS
-OPTIONS = -DBOOT720 -DLITTLE_ENDIAN -DBIGCASE -DINLINE_FUNCTIONS \
+OPTIONS = -DBOOT720 -DCPU_LITTLE_ENDIAN -DBIGCASE -DINLINE_FUNCTIONS \
 	-DBOOTFILE=\"${LOCALPREFIX}/lib/pcemu/DriveA\"
 #XROOT   = /usr/local/X11R5
 XROOT   = /usr/X11R6
diff -ru cpu.h.orig cpu.h
--- cpu.h.orig	Wed Jun 22 16:24:50 1994
+++ cpu.h	Wed Feb 18 10:50:46 1998
@@ -113,13 +113,13 @@
     format and back again. Obviously there is nothing to do for little-endian
     machines... */
 
-#if defined(LITTLE_ENDIAN)
+#if defined(CPU_LITTLE_ENDIAN)
 #   define ChangeE(x) (WORD)(x)
 #else
 #   define ChangeE(x) (WORD)(((x) << 8) | ((BYTE)((x) >> 8)))
 #endif
 
-#if defined(LITTLE_ENDIAN) && !defined(ALIGNED_ACCESS)
+#if defined(CPU_LITTLE_ENDIAN) && !defined(ALIGNED_ACCESS)
 #   define ReadWord(x) (*(x))
 #   define WriteWord(x,y) (*(x) = (y))
 #   define CopyWord(x,y) (*x = *y)