Isolate freezing Expansion Bus Mgr func

CoolStuff.a

@@ -0,0 +1,48 @@
+EBM_FAKE_FIRSTFUNC PROC EXPORT
+
+
+	IMPORT	BaseOfROM
+	MACHINE	MC68030
+	
+
+	pea		@str1
+	move	#-3,-(sp)
+	dc.w	$aa7f
+
+	bsr.l	(BaseOfROM + $49590)
+
+	pea		@str2
+	move	#-3,-(sp)
+	dc.w	$aa7f
+
+	bsr.l	(BaseOfROM + $471DE)
+
+	pea		@str3
+	move	#-3,-(sp)
+	dc.w	$aa7f
+
+	bsr.l	(BaseOfROM + $44FF0)
+
+	pea		@str4
+	move	#-3,-(sp)
+	dc.w	$aa7f
+
+	rts
+
+
+	STRING	C
+@str1
+	dc.b	'*68k: Entered fake FirstFunc^n'
+	ALIGN	2
+@str2
+	dc.b	'*68k: returned from 49590^n'
+	ALIGN	2
+@str3
+	dc.b	'*68k: returned from 471DE^n'
+	ALIGN	2
+@str4
+	dc.b	'*68k: returned from 44FF0 ... returning^n'
+	ALIGN	2
+
+
+	END

Make/MainCode.Make

@@ -87,12 +87,16 @@ MainCodeLibs =
 #															¶
 #	Keep DispTable at end									¶
 #															¶
-				"{ObjDir}DispTable.a.o"												
+				"{ObjDir}DispTable.a.o" "{ObjDir}CoolStuff.a.o"												
 #
 # end of ROM
 #
 
 
+"{ObjDir}CoolStuff.a.o"			Ä	"{Sources}CoolStuff.a"
+	Asm {StdAOpts} -o "{Targ}" "{Sources}CoolStuff.a"
+
+
 #
 #	Main Code Image Resource
 #

OS/StartMgr/StartInit.a

@@ -1545,8 +1545,8 @@ BootRetry	MOVE	#$2700,SR						; disable interrupts
 			IMPORT	InterC_15c0_CodePrepare2
 			BSR.L	InterC_15c0_CodePrepare2
 
-			IMPORT	EXPANSIONBUSMGRFIRSTFUNC
-			BSR.L	EXPANSIONBUSMGRFIRSTFUNC
+			IMPORT	EBM_FAKE_FIRSTFUNC
+			BSR.L	EBM_FAKE_FIRSTFUNC
 
 			BSR.L	CompBootStackOld				; lifted from SetUpSysAppZone
 			MOVE.L	A0,SP