diff --git a/avr/usbload/config.h b/avr/usbload/config.h
index 27f5bb8..0318f0d 100644
--- a/avr/usbload/config.h
+++ b/avr/usbload/config.h
@@ -43,7 +43,7 @@
 #define USB_CRC_CHECK               0x01
 
 #define TRANSFER_BUFFER_SIZE        0x200
-
+#define FORMAT_BUFFER_LEN           0x0FF
 #define HW_VERSION                  "2.6"
 #define SW_VERSION                  "1.0"
 
diff --git a/avr/usbload/debug.c b/avr/usbload/debug.c
index 4026500..9a25ad7 100644
--- a/avr/usbload/debug.c
+++ b/avr/usbload/debug.c
@@ -20,11 +20,11 @@
 
 #include <stdlib.h>
 #include <stdint.h>
+#include <avr/pgmspace.h>
 
 #include "debug.h"
 #include "uart.h"
-
-
+#include "config.h"
 
 extern FILE uart_stdout;
 
@@ -46,4 +46,23 @@ void debug(int level, char* format, ...) {
 }
 #endif 
 
+#ifndef NO_INFO
+    uint8_t buffer_debug[FORMAT_BUFFER_LEN];
+#endif
    
+#if defined(NO_DEBUG) && defined(__GNUC__)
+#else
+void debug_P(int level, PGM_P format, ...) {
+#ifdef NO_DEBUG
+
+#else
+    va_list args;
+    if (!(debug_level & level))
+        return;
+    strlcpy_P(buffer_debug,format,FORMAT_BUFFER_LEN);
+    va_start(args, format);
+    vprintf(buffer_debug, args);
+    va_end(args);
+#endif
+}
+#endif 
\ No newline at end of file
diff --git a/avr/usbload/debug.h b/avr/usbload/debug.h
index e62384b..56403b4 100644
--- a/avr/usbload/debug.h
+++ b/avr/usbload/debug.h
@@ -26,7 +26,7 @@
 #include <stdlib.h>
 #include <stdint.h>
 #include <stdarg.h>
-
+#include <avr/pgmspace.h>
 
 #if defined(NO_DEBUG) && defined(__GNUC__)
 /* gcc's cpp has extensions; it allows for macros with a variable number of
@@ -39,5 +39,17 @@ void debug(int level, char *format, ...);
 #endif
 
 
+
+#if defined(NO_DEBUG) && defined(__GNUC__)
+/* gcc's cpp has extensions; it allows for macros with a variable number of
+   arguments. We use this extension here to preprocess pmesg away. */
+#define debug_P(level, format, args...) ((void)0)
+#else
+void debug_P(int level, PGM_P format, ...);
+/* print a message, if it is considered significant enough.
+      Adapted from [K&R2], p. 174 */
+#endif
+
+
 #endif /* DEBUG_H */
         
diff --git a/avr/usbload/info.c b/avr/usbload/info.c
index e86dde6..bcfc7b8 100644
--- a/avr/usbload/info.c
+++ b/avr/usbload/info.c
@@ -20,9 +20,12 @@
 
 #include <stdlib.h>
 #include <stdint.h>
+#include <avr/pgmspace.h>
 
 #include "info.h"
 #include "uart.h"
+#include "config.h"
+
 
 
 
@@ -46,4 +49,26 @@ void info(char* format, ...) {
 }
 #endif 
 
+
+#ifndef NO_INFO
+    uint8_t buffer_info[FORMAT_BUFFER_LEN];
+#endif
+
+#if defined(NO_INFO) && defined(__GNUC__)
+
+#define info(format, args...) ((void)0)
+
+#else
+void info_P(PGM_P format, ...) {
+#ifdef NO_INFO
+
+#else
+    strlcpy_P(buffer_info,format,FORMAT_BUFFER_LEN);
+    va_list args;
+    va_start(args, format);
+    vprintf(buffer_info, args);
+    va_end(args);
+#endif
+}
+#endif
    
diff --git a/avr/usbload/info.h b/avr/usbload/info.h
index ef17f71..b98f980 100644
--- a/avr/usbload/info.h
+++ b/avr/usbload/info.h
@@ -26,7 +26,7 @@
 #include <stdlib.h>
 #include <stdint.h>
 #include <stdarg.h>
-
+#include <avr/pgmspace.h>
 
 #if defined(NO_INFO) && defined(__GNUC__)
 /* gcc's cpp has extensions; it allows for macros with a variable number of
@@ -39,4 +39,15 @@ void info(char *format, ...);
 #endif
 
 
+#if defined(NO_INFO) && defined(__GNUC__)
+/* gcc's cpp has extensions; it allows for macros with a variable number of
+   arguments. We use this extension here to preprocess pmesg away. */
+#define info_P(format, args...) ((void)0)
+#else
+void info_P(PGM_P format, ...);
+/* print a message, if it is considered significant enough.
+      Adapted from [K&R2], p. 174 */
+#endif
+
+
 #endif