networking works (sort of). For some reason, the Firebee packets don't cross my switch (or only very few of them do). If I put a Linux box in between (cross cable), using it as router, everything works flawlessly.

BaS_gcc/sys/exceptions.S

@@ -332,7 +332,7 @@ std_exc_vec:
 		move.w	8(sp),d0			// fetch vector
 		and.l	#0x3fc,d0			// mask out vector number
 
-
+#ifdef DBG_EXC
 		// printout vector number of exception
 
 		lea		-4 * 4(sp),sp		// reserve stack space
@@ -356,7 +356,8 @@ noprint:
 		
 		movem.l	(sp),d0-d1/a0-a1	// restore registers
 		lea		4 * 4(sp),sp
-		
+#endif /* DBG_EXC */
+
 		add.l	_rt_vbr,d0			// + VBR
 		move.l	d0,a5				
 		move.l	(a5),d0				// fetch exception routine address