diff --git a/src/config.h b/src/config.h
new file mode 100644
index 0000000..fabcc76
--- /dev/null
+++ b/src/config.h
@@ -0,0 +1,157 @@
+#ifndef _CONFIG_H
+#define _CONFIG_H
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#if defined(__TINYC__)
+#pragma pack(1)
+#endif
+
+#define DEBUG       1
+#define PROFILE     1
+
+#define HAS_TYPES   1
+#define HAS_FLOAT   0
+/* Support for functions and local variables (stack) */
+#define HAS_FUNC    1
+/* Speed-up variable look-up with small hash table */
+#define HASH_VAR    1
+
+/*
+  A stack undeflow can only occur if compiler generates wrong code or VM is faulty.
+  Or external ccalls are wrong.
+  Should only be enabled for testing and debugging.
+*/
+#define STACKUNDERFLOWCHECK   0
+
+/* Default length of strings (heap) */
+#define DEFSTRINGLEN  16
+/* event module: maximal number of events (table) */
+#define MAXEVENTS     16
+/* maximum length of identifiers */
+#define MAXNAMELEN    8
+/* maximum number of context tasks. At least 1, typical 2 (0: main program, foreground, 1:command line, background) */
+#define MAXTASKS      4
+/* Memory alignment of data part of variables (scalars, strings, arrays) */
+#define MEMALIGN      2
+/* Memory alignment of data part of variables (scalars, strings, arrays) */
+/* Total padding  is HAS_LOCK + VARPADDING */
+#define VARPADDING    0
+/* Variable/Function locking via lock(x) and unlock(x) */
+#define HAS_LOCK      1
+
+/* Default stack size */
+#define DEFSTACKSIZE  100
+
+/* Defaukt number type, inherited by stacks, too */
+#define NUMBER_T      int16_t  
+
+/* Some functions can be inlined, leave empty if these function candidates should not be converted to inline code */
+#define INLINE
+
+/* SHM support for debgging and hw-signal simulation? */
+#define SHM   1
+
+/* With network module supporting serial communication devices? */
+#define HAS_NET 1
+/* W/o routing a simplified network module is used providing only down- and up-direction message proapagation with 1 link per node */
+#define HAS_NET_ROUTING 0
+/* Maximal number of serial ports (1 if HAS_NET and HAS_NET_ROUTING=0) */
+#define NUMPORTS        1
+/* Port buffer PORTRXBUFFERSIZE:[rx,inp] PORTTXBUFFERSIZE:[tx], one port*/
+#define PORTRXBUFFERSIZE      1024
+/* only needed if HAS_NET_ROUTING==1 */
+#define PORTTXBUFFERSIZE      1024
+/* message log buffer (shared by all ports), number of messages, only for HAS_NET_ROUTING==1 */
+#define MSGLOGSIZE            32
+
+
+/** MEMORY ***/
+/* Dynamic memory allocation */
+#define   MEMALLOC  malloc
+#define   MEMCOPY   memcpy
+#define   MEMSET    memset
+/*
+  VM access to communication channels (including stdin,stdout)
+  Without or with net module (or only mini net w/o routing).
+  
+  Entry points are the following operations that must be provided by the host application.
+*/
+/*
+  IO Multiplexer API: These funcions must be provided by host applcation.
+  fd >= 0: Real file or serial port IO from net module
+  fd <= 0: Virtual IO by VM, must be handled separately
+*/
+extern int  availbyte(int fd);
+extern char inbyte(int fd);
+extern int  outbyte(int fd,char x);
+
+#define AVAILBYTE(fd)     availbyte(-(fd+1))
+#define INBYTE(fd)        inbyte(-(fd+1))
+#define OUTBYTE(fd,x)     outbyte(-(fd+1),x)
+
+/*
+  Wake up blocked Loop (if Loop is blocking)
+  Unix: self sending of signal
+  Actually not needed.
+*/
+extern void interrupt();
+#define INTERRUPT()       interrupt()
+
+/*
+  Read/write-through versions w/o using the net module, can be used for single node systems
+#define AVAILBYTE(fd)     1
+#define INBYTE(fd)        getchar()
+#define OUTBYTE(fd,x)     putchar(x)  
+*/
+
+#ifndef MILLIS
+// millis, relative to program start
+/* return system clock in milliseconds  */
+#include <sys/time.h>
+time_t __millis0;
+suseconds_t __micros0;
+#define MILLIS() ({ \
+  struct timeval t ; \
+  gettimeofday ( & t , NULL ) ; \
+  unsigned long retval = (int)((t.tv_sec * 1000 + ( t.tv_usec + 500 ) / 1000)-__millis0); \
+  retval;\
+})
+#endif
+
+#ifndef MICROS
+#define MICROS()   ({ \
+  struct timeval t ; \
+  gettimeofday ( & t , NULL ) ; \
+  unsigned long retval = t.tv_usec - __micros0; \
+  retval;\
+})         
+#endif
+
+#ifndef TIMEINIT
+// timeinit
+#define TIMEINIT() {\
+  struct timeval t ; \
+  gettimeofday ( & t , NULL ) ; \
+  __millis0 = t.tv_sec * 1000 + ( t.tv_usec + 500 ) / 1000 ;\
+  __micros0 = t.tv_usec;\
+}
+#endif
+
+extern int iowait();
+#define IOINIT  ioinit
+#define IOAWAIT iowait
+
+
+// Only for debugging/monitoring (print_format can be redirected to router/serial port)
+// always redirected to stdout
+#ifdef DEBUG
+  void vLog(const char* fmtStr, ...);
+#else
+  #define vLog(...)
+#endif 
+
+
+#endif