diff --git a/Doc/RomWBW Architecture.pdf b/Doc/RomWBW Architecture.pdf
index 7ac59612..0f81ccd7 100644
Binary files a/Doc/RomWBW Architecture.pdf and b/Doc/RomWBW Architecture.pdf differ
diff --git a/ReadMe.txt b/ReadMe.txt
index da4427e1..abe6ea25 100644
--- a/ReadMe.txt
+++ b/ReadMe.txt
@@ -7,7 +7,7 @@
 ***********************************************************************
 
 Wayne Warthen (wwarthen@gmail.com)
-Version 2.9.2-pre.19, 2019-10-14
+Version 2.9.2-pre.20, 2019-11-11
 https://www.retrobrewcomputers.org/
 
 RomWBW is a ROM-based implementation of CP/M-80 2.2 and Z-System for 
diff --git a/Source/CBIOS/ver.inc b/Source/CBIOS/ver.inc
index 0e4b5f8e..cc7a9eb0 100644
--- a/Source/CBIOS/ver.inc
+++ b/Source/CBIOS/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	9
 #DEFINE	RUP	2
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"2.9.2-pre.19"
+#DEFINE BIOSVER	"2.9.2-pre.20"
diff --git a/Source/Doc/RomWBW Architecture.docx b/Source/Doc/RomWBW Architecture.docx
index e11a75de..89308a0a 100644
Binary files a/Source/Doc/RomWBW Architecture.docx and b/Source/Doc/RomWBW Architecture.docx differ
diff --git a/Source/HBIOS/API.txt b/Source/HBIOS/API.txt
index 33f8fb3e..7b97b0cd 100644
--- a/Source/HBIOS/API.txt
+++ b/Source/HBIOS/API.txt
@@ -60,6 +60,7 @@ GET ($F8):
     SECONDS ($D1):
       BC=Function/Subfunction                   A=Result
                                                 DE:HL=Seconds Value (32 bit)
+						C=Ticks within current second
 
     BOOTINFO ($E0):
       BC=Function/Subfunction                   A=Result
diff --git a/Source/HBIOS/ver.inc b/Source/HBIOS/ver.inc
index 0e4b5f8e..cc7a9eb0 100644
--- a/Source/HBIOS/ver.inc
+++ b/Source/HBIOS/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	9
 #DEFINE	RUP	2
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"2.9.2-pre.19"
+#DEFINE BIOSVER	"2.9.2-pre.20"