diff --git a/Doc/ROM Applications.pdf b/Doc/ROM Applications.pdf
index ca96c7eb..02d0ef45 100644
Binary files a/Doc/ROM Applications.pdf and b/Doc/ROM Applications.pdf differ
diff --git a/Doc/RomWBW Applications.pdf b/Doc/RomWBW Applications.pdf
index 9a2f26f6..09083955 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 a2957559..52d49b6d 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 b8d3fed9..874f9cb7 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 30917f7d..83bb6e27 100644
Binary files a/Doc/RomWBW Getting Started.pdf and b/Doc/RomWBW Getting Started.pdf differ
diff --git a/Source/Doc/Architecture.md b/Source/Doc/Architecture.md
index 5afc0cd0..fa44729f 100644
--- a/Source/Doc/Architecture.md
+++ b/Source/Doc/Architecture.md
@@ -34,6 +34,7 @@ header-includes:
   \usepackage{fancyhdr}
   \usepackage{xcolor}
   \usepackage{xhfill}
+  \usepackage{graphicx}
   \renewcommand*{\familydefault}{\sfdefault}
   \renewcommand{\maketitle}{
     \begin{titlepage}
@@ -194,7 +195,7 @@ simpler and more memory efficient to keep everything in RAM. At startup
 Runtime Memory Layout
 =====================
 
-![Banked Switched Memory Layout](Graphics/Bank Switched Memory){ width=80% }
+![Banked Switched Memory Layout](Graphics/BankSwitchedMemory){ width=80% }
 
 System Boot Process
 ===================
@@ -344,7 +345,7 @@ functions (such as cursor positioning, scrolling, etc.).
 Figure 7.1 depicts the relationship between these components
 of HBIOS video processing:
 
-![Character / Emulation / Video Services](Graphics/Character Emulation Video Services){ width=100% }
+![Character / Emulation / Video Services](Graphics/CharacterEmulationVideoServices){ width=100% }
 
 Normally, the operating system will simply utilize the CIOXXX functions
 to send and receive character data. The Character I/O Services will
diff --git a/Source/Doc/Graphics/Bank Switched Memory.pdf b/Source/Doc/Graphics/BankSwitchedMemory.pdf
similarity index 100%
rename from Source/Doc/Graphics/Bank Switched Memory.pdf
rename to Source/Doc/Graphics/BankSwitchedMemory.pdf
diff --git a/Source/Doc/Graphics/Bank Switched Memory.png b/Source/Doc/Graphics/BankSwitchedMemory.png
similarity index 100%
rename from Source/Doc/Graphics/Bank Switched Memory.png
rename to Source/Doc/Graphics/BankSwitchedMemory.png
diff --git a/Source/Doc/Graphics/Bank Switched Memory.vsd b/Source/Doc/Graphics/BankSwitchedMemory.vsd
similarity index 100%
rename from Source/Doc/Graphics/Bank Switched Memory.vsd
rename to Source/Doc/Graphics/BankSwitchedMemory.vsd
diff --git a/Source/Doc/Graphics/Character Emulation Video Services.pdf b/Source/Doc/Graphics/CharacterEmulationVideoServices.pdf
similarity index 100%
rename from Source/Doc/Graphics/Character Emulation Video Services.pdf
rename to Source/Doc/Graphics/CharacterEmulationVideoServices.pdf
diff --git a/Source/Doc/Graphics/Character Emulation Video Services.png b/Source/Doc/Graphics/CharacterEmulationVideoServices.png
similarity index 100%
rename from Source/Doc/Graphics/Character Emulation Video Services.png
rename to Source/Doc/Graphics/CharacterEmulationVideoServices.png
diff --git a/Source/Doc/Graphics/Character  Emulation  Video Services.vsd b/Source/Doc/Graphics/CharacterEmulationVideoServices.vsd
similarity index 100%
rename from Source/Doc/Graphics/Character  Emulation  Video Services.vsd
rename to Source/Doc/Graphics/CharacterEmulationVideoServices.vsd
diff --git a/Source/HBIOS/hbios.inc b/Source/HBIOS/hbios.inc
index 0cb96410..498d51c7 100644
--- a/Source/HBIOS/hbios.inc
+++ b/Source/HBIOS/hbios.inc
@@ -54,6 +54,7 @@ BF_VDASCR	.EQU	BF_VDA + 11	; SCROLL
 BF_VDAKST	.EQU	BF_VDA + 12	; GET KEYBOARD STATUS
 BF_VDAKFL	.EQU	BF_VDA + 13	; FLUSH KEYBOARD BUFFER
 BF_VDAKRD	.EQU	BF_VDA + 14	; READ KEYBOARD
+BF_VDARDC	.EQU	BF_VDA + 15	; READ CHARACTER
 ;
 BF_SND		.EQU	$50
 BF_SNDRESET	.EQU	BF_SND + 0	; RESET SOUND SYSTEM
diff --git a/Source/ver.inc b/Source/ver.inc
index cab99f56..202747a4 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	1
 #DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.1.1-pre.127"
+#DEFINE BIOSVER	"3.1.1-pre.128"
diff --git a/Source/ver.lib b/Source/ver.lib
index 9b867e0d..33f8c767 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -3,5 +3,5 @@ rmn	equ	1
 rup	equ	1
 rtp	equ	0
 biosver	macro
-	db	"3.1.1-pre.127"
+	db	"3.1.1-pre.128"
 	endm