diff --git a/Doc/FDU.txt b/Doc/FDU.txt
index d67fe1fe..278d6686 100644
--- a/Doc/FDU.txt
+++ b/Doc/FDU.txt
@@ -510,5 +510,11 @@ WW 9/5/2018: v5.3
     operation.
   - Added support for SmallZ80
 
-WW 5/1/2020: v5.4
+WW 1/5/2020: v5.4
   - Added support for Dyno (based on work by Steve Garcia)
+
+WW 4/29/2020: v5.5
+  - Added support for Etched Pixels FDC
+
+WW 12/12/2020: v5.6
+  - Updated SmallZ80 support for new I/O map
\ No newline at end of file
diff --git a/Doc/RomWBW Applications.pdf b/Doc/RomWBW Applications.pdf
index 6d593e91..2fc794ed 100644
Binary files a/Doc/RomWBW Applications.pdf and b/Doc/RomWBW Applications.pdf differ
diff --git a/Doc/RomWBW Architecture.pdf b/Doc/RomWBW Architecture.pdf
index 81ac29e1..72921d8e 100644
Binary files a/Doc/RomWBW Architecture.pdf and b/Doc/RomWBW Architecture.pdf differ
diff --git a/Doc/RomWBW Disk Catalog.pdf b/Doc/RomWBW Disk Catalog.pdf
index 16095b4f..b2a967bc 100644
Binary files a/Doc/RomWBW Disk Catalog.pdf and b/Doc/RomWBW Disk Catalog.pdf differ
diff --git a/Doc/RomWBW Getting Started.pdf b/Doc/RomWBW Getting Started.pdf
index 9707ed8f..b30e07ac 100644
Binary files a/Doc/RomWBW Getting Started.pdf and b/Doc/RomWBW Getting Started.pdf differ
diff --git a/Source/Apps/FDU/FDU.asm b/Source/Apps/FDU/FDU.asm
index 23241dfa..9b7a5620 100644
--- a/Source/Apps/FDU/FDU.asm
+++ b/Source/Apps/FDU/FDU.asm
@@ -46,6 +46,7 @@
 ;			  OF USING PULSE TC
 ;   2020-01-05: V5.4	ADDED SUPPORT FOR DYNO FDC
 ;   2020-04-29: v5.5	ADDED SUPPORT FOR ETCHED PIXELS FDC
+;   2020-12-12: v5.6	UPDATED SMALLZ80 TO NEW I/O ADDRESSES
 ;			
 ;_______________________________________________________________________________
 ;
@@ -215,7 +216,7 @@ INIT5:
 	XOR	A
 	RET
 		
-STR_BANNER	.DB	"Floppy Disk Utility (FDU) v5.5, 29-Apr-2020$"
+STR_BANNER	.DB	"Floppy Disk Utility (FDU) v5.6, 12-Dec-2020$"
 STR_BANNER2	.DB	"Copyright (C) 2020, Wayne Warthen, GNU GPL v3","$"
 STR_HBIOS	.DB	" [HBIOS]$"
 STR_UBIOS	.DB	" [UBIOS]$"
@@ -402,11 +403,11 @@ CFG_RCWDC:
 	.DB	_PCAT	; MODE=
 ;
 CFG_SMZ80:
-	.DB	044H	; FDC MAIN STATUS REGISTER
-	.DB	045H	; FDC DATA PORT
+	.DB	074H	; FDC MAIN STATUS REGISTER
+	.DB	075H	; FDC DATA PORT
 	.DB	0FFH	; DATA INPUT REGISTER
-	.DB	042H	; DIGITAL OUTPUT REGISTER (LATCH)
-	.DB	047H	; DCR
+	.DB	072H	; DIGITAL OUTPUT REGISTER (LATCH)
+	.DB	077H	; DCR
 	.DB	0FFH	; DACK
 	.DB	0FFH	; TERMINAL COUNT (W/ DACK)
 	.DB	0FFH	; PSEUDO DMA DATA PORT
diff --git a/Source/Apps/FDU/FDU.txt b/Source/Apps/FDU/FDU.txt
index d67fe1fe..278d6686 100644
--- a/Source/Apps/FDU/FDU.txt
+++ b/Source/Apps/FDU/FDU.txt
@@ -510,5 +510,11 @@ WW 9/5/2018: v5.3
     operation.
   - Added support for SmallZ80
 
-WW 5/1/2020: v5.4
+WW 1/5/2020: v5.4
   - Added support for Dyno (based on work by Steve Garcia)
+
+WW 4/29/2020: v5.5
+  - Added support for Etched Pixels FDC
+
+WW 12/12/2020: v5.6
+  - Updated SmallZ80 support for new I/O map
\ No newline at end of file