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diff --git a/z80_private.h b/z80_private.h
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+/*
+
+    z80 - Z80 emulation
+
+    Copyright (C) 2006  Ian Cowburn (ianc@noddybox.demon.co.uk)
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    -------------------------------------------------------------------------
+
+    $Id$
+
+    Private macros for Z80
+
+*/
+
+#ifndef Z80_PRIVATE_H
+#define Z80_PRIVATE_H "$Id$"
+
+#ifndef TRUE
+#define TRUE	1
+#endif
+
+#ifndef FALSE
+#define FALSE	0
+#endif
+
+#define MAX_PER_CALLBACK	10
+
+
+/* ---------------------------------------- TYPES
+*/
+
+struct Z80
+{
+    Z80Val		cycle;
+
+    Z80Word		PC;
+
+    Z80Byte		A;
+    Z80Byte		F;
+    Z80Word		BC;
+    Z80Word		DE;
+    Z80Word		HL;
+
+    Z80Word		AF_;
+    Z80Word		BC_;
+    Z80Word		DE_;
+    Z80Word		HL_;
+
+    Z80Word		IX;
+    Z80Word		IY;
+
+    Z80Word		SP;
+
+    Z80Byte		IFF1;
+    Z80Byte		IFF2;
+    Z80Byte		IM;
+    Z80Byte		I;
+    Z80Byte		R;
+    int			halt;
+
+    int			use_cb_off;
+    Z80Relative		cb_off;
+
+    Z80Byte		shift;
+
+    int			raise;
+    Z80Byte		devbyte;
+    int			nmi;
+
+    Z80Byte		*memory;
+    int			*memctrl;
+
+    Z80ReadPort		pread;
+    Z80WritePort	pwrite;
+
+    Z80Callback		callback[eZ80_NO_CALLBACK][MAX_PER_CALLBACK];
+
+    int			last_cb;
+};
+
+
+/* ---------------------------------------- MACROS
+*/
+
+/* NOTE: A lot of these macros assume you have a variable called 'cpu'
+         which is a pointer to Z80
+*/
+
+
+/* HI/LO
+*/
+#define SET_HI(reg,v)	reg = (reg & 0x00ff) | ((v) << 8)
+#define SET_LO(reg,v)	reg = (reg & 0xff00) | ((v) & 0xff)
+#define GET_HI(reg,v)	((reg & 0xff00) >> 8)
+#define GET_LO(reg,v)	(reg & 0xff)
+
+/* Invoke a callback class
+*/
+#define CALLBACK(r,d)	do					\
+			{					\
+			int f;					\
+								\
+			for(f=0;f<MAX_PER_CALLBACK;f++)		\
+			    if (cpu->callback[r][f])		\
+				cpu->callback[r][f](cpu,d);	\
+			} while(0)
+
+/* Flag register
+*/
+#define C_Z80			0x01
+#define N_Z80			0x02
+#define P_Z80			0x04
+#define V_Z80			P_Z80
+#define H_Z80			0x10
+#define Z_Z80			0x40
+#define S_Z80			0x80
+
+#define B3_Z80			0x08
+#define B5_Z80			0x20
+
+
+#define SET(v,b)		v|=b
+#define CLR(v,b)		v&=~(b)
+
+#define SETFLAG(f)		SET(cpu->F,f)
+#define CLRFLAG(f)		CLR(cpu->F,f)
+
+#define PEEK(addr)		(cpu->memory[addr])
+#define PEEKW(addr)		(PEEK(addr) | (Z80Word)PEEK(addr+1)<<8)
+
+#define POKE(addr,val)		do					\
+				{					\
+				    if (cpu->memctrl[(addr)/256])	\
+				    {					\
+				    	cpu->memory[addr]=val;		\
+				    }					\
+				while (0)(cpu->write(cpu,addr,val))
+#define POKEW(addr,val)		do					\
+				{					\
+				    POKE(addr,val);			\
+				    POKE(addr+1,val>>8);		\
+				} while(0)
+
+#define FETCH_BYTE		(cpu->memory[cpu->PC++])
+#define FETCH_WORD		(cpu->PC+=2,				\
+				    cpu->memory[cpu->PC-2]|		\
+					((Z80Word)cpu->memory[cpu->PC-1]<<8))
+
+#define IS_C			(cpu->F&C_Z80)
+#define IS_N			(cpu->F&N_Z80)
+#define IS_P			(cpu->F&P_Z80)
+#define IS_H			(cpu->F&H_Z80)
+#define IS_Z			(cpu->F&Z_Z80)
+#define IS_S			(cpu->F&S_Z80)
+
+#define CARRY			IS_C
+
+#define TSTATE(n)		cpu->cycle+=n
+
+#define ADD_R(v)		cpu->R=((cpu->R&0x80)|((cpu->R+(v))&0x7f))
+#define INC_R			ADD_R(1)
+
+#define PUSH(REG)		do				\
+				{				\
+				    cpu->SP-=2;			\
+				    POKEW(cpu->SP,REG);		\
+				} while(0)
+#define POP(REG)		do				\
+				{				\
+				    REG=PEEKW(cpu->SP);		\
+				    cpu->SP+=2;			\
+				} while(0)
+
+#define SETHIDDEN(res)		cpu->F=(cpu->F&~(B3_Z80|B5_Z80))|\
+					((res)&(B3_Z80|B5_Z80))
+
+
+
+/* ---------------------------------------- FLAG TABLES
+*/
+extern Z80Byte			PSZtable[512];
+extern Z80Byte			SZtable[512];
+extern Z80Byte			Ptable[512];
+extern Z80Byte			Stable[512];
+extern Z80Byte			Ztable[512];
+
+
+/* ---------------------------------------- GLOBAL GENERAL OPCODES/ROUTINES
+*/
+void Z80_Decode(Z80 *cpu);
+
+
+#endif
+
+/* END OF FILE */