Fix FZ80 Makefile (Issue #407)

- FZ80 Makefile failed to handle individual ROM build scenario.  Credit and thanks to Mark Pruden for this.
- Updated SIMH emulator to v4.1

Source/FZ80/Makefile

@@ -4,7 +4,11 @@ FZ80ROM = ../../Binary/FZ80_std.rom
 HD1KIMGS = ../../Binary/hd1k_cpm22.img ../../Binary/hd1k_zsdos.img ../../Binary/hd1k_nzcom.img \
 	../../Binary/hd1k_cpm3.img ../../Binary/hd1k_zpm3.img ../../Binary/hd1k_ws4.img
 
-OBJECTS := $(HD1KFZ80PREFIX) $(HD1KFZ80COMBOIMG)
+OBJECTS :=
+
+ifneq ($(wildcard $(FZ80ROM)),)
+	OBJECTS += $(HD1KFZ80PREFIX) $(HD1KFZ80COMBOIMG)
+endif
 
 DEST=../../Binary
 

Source/ver.inc

@@ -2,7 +2,7 @@
 #DEFINE	RMN	5
 #DEFINE	RUP	0
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.5.0-dev.68"
+#DEFINE BIOSVER	"3.5.0-dev.69"
 #define rmj	RMJ
 #define rmn	RMN
 #define rup	RUP

Source/ver.lib

@@ -3,5 +3,5 @@ rmn	equ	5
 rup	equ	0
 rtp	equ	0
 biosver	macro
-	db	"3.5.0-dev.68"
+	db	"3.5.0-dev.69"
 	endm