diff --git a/Visual Studio Projects/ALTAIR.vcproj b/Visual Studio Projects/ALTAIR.vcproj
index 50953c79..20741a3b 100644
--- a/Visual Studio Projects/ALTAIR.vcproj	
+++ b/Visual Studio Projects/ALTAIR.vcproj	
@@ -218,6 +218,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -267,6 +271,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/AltairZ80.vcproj b/Visual Studio Projects/AltairZ80.vcproj
index 9125307d..12d0702f 100644
--- a/Visual Studio Projects/AltairZ80.vcproj	
+++ b/Visual Studio Projects/AltairZ80.vcproj	
@@ -321,6 +321,10 @@
 				RelativePath="..\AltairZ80\sim_imd.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -378,6 +382,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/ECLIPSE.vcproj b/Visual Studio Projects/ECLIPSE.vcproj
index ca98d455..4dfbc491 100644
--- a/Visual Studio Projects/ECLIPSE.vcproj	
+++ b/Visual Studio Projects/ECLIPSE.vcproj	
@@ -249,6 +249,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -294,6 +298,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/GRI.vcproj b/Visual Studio Projects/GRI.vcproj
index 3f88b5bb..29b5acba 100644
--- a/Visual Studio Projects/GRI.vcproj	
+++ b/Visual Studio Projects/GRI.vcproj	
@@ -213,6 +213,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -262,6 +266,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/H316.vcproj b/Visual Studio Projects/H316.vcproj
index 8bd7530e..a48ef4fe 100644
--- a/Visual Studio Projects/H316.vcproj	
+++ b/Visual Studio Projects/H316.vcproj	
@@ -229,6 +229,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -278,6 +282,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/HP2100.vcproj b/Visual Studio Projects/HP2100.vcproj
index 2978e132..8cdd3fbc 100644
--- a/Visual Studio Projects/HP2100.vcproj	
+++ b/Visual Studio Projects/HP2100.vcproj	
@@ -317,6 +317,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -390,6 +394,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/I1401.vcproj b/Visual Studio Projects/I1401.vcproj
index e9b6d64e..3de4930f 100644
--- a/Visual Studio Projects/I1401.vcproj	
+++ b/Visual Studio Projects/I1401.vcproj	
@@ -229,6 +229,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -282,6 +286,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/I1620.vcproj b/Visual Studio Projects/I1620.vcproj
index 7a3afc53..4f1eb453 100644
--- a/Visual Studio Projects/I1620.vcproj	
+++ b/Visual Studio Projects/I1620.vcproj	
@@ -233,6 +233,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -282,6 +286,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/I7094.vcproj b/Visual Studio Projects/I7094.vcproj
index 6f04a6b1..d1871c95 100644
--- a/Visual Studio Projects/I7094.vcproj	
+++ b/Visual Studio Projects/I7094.vcproj	
@@ -249,6 +249,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -302,6 +306,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/IBM1130.vcproj b/Visual Studio Projects/IBM1130.vcproj
index 2a116ced..c59f1b04 100644
--- a/Visual Studio Projects/IBM1130.vcproj	
+++ b/Visual Studio Projects/IBM1130.vcproj	
@@ -253,6 +253,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -326,6 +330,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/ID16.vcproj b/Visual Studio Projects/ID16.vcproj
index 0c50ccc7..340ec469 100644
--- a/Visual Studio Projects/ID16.vcproj	
+++ b/Visual Studio Projects/ID16.vcproj	
@@ -261,6 +261,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -310,6 +314,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/ID32.vcproj b/Visual Studio Projects/ID32.vcproj
index 9474205e..c7b34690 100644
--- a/Visual Studio Projects/ID32.vcproj	
+++ b/Visual Studio Projects/ID32.vcproj	
@@ -261,6 +261,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -310,6 +314,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/NOVA.vcproj b/Visual Studio Projects/NOVA.vcproj
index ed896b38..be2bc396 100644
--- a/Visual Studio Projects/NOVA.vcproj	
+++ b/Visual Studio Projects/NOVA.vcproj	
@@ -249,6 +249,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -298,6 +302,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/PDP1.vcproj b/Visual Studio Projects/PDP1.vcproj
index d367998d..c1954faa 100644
--- a/Visual Studio Projects/PDP1.vcproj	
+++ b/Visual Studio Projects/PDP1.vcproj	
@@ -233,6 +233,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -282,6 +286,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/PDP10.vcproj b/Visual Studio Projects/PDP10.vcproj
index 36c52831..766ca9e9 100644
--- a/Visual Studio Projects/PDP10.vcproj	
+++ b/Visual Studio Projects/PDP10.vcproj	
@@ -267,6 +267,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -316,6 +320,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/PDP11.vcproj b/Visual Studio Projects/PDP11.vcproj
index fc4f4b67..ae07e30c 100644
--- a/Visual Studio Projects/PDP11.vcproj	
+++ b/Visual Studio Projects/PDP11.vcproj	
@@ -375,6 +375,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -464,6 +468,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/PDP15.vcproj b/Visual Studio Projects/PDP15.vcproj
index 8241c99f..8ecf0638 100644
--- a/Visual Studio Projects/PDP15.vcproj	
+++ b/Visual Studio Projects/PDP15.vcproj	
@@ -245,6 +245,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -294,6 +298,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/PDP4.vcproj b/Visual Studio Projects/PDP4.vcproj
index b7049eca..c6accca9 100644
--- a/Visual Studio Projects/PDP4.vcproj	
+++ b/Visual Studio Projects/PDP4.vcproj	
@@ -245,6 +245,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -294,6 +298,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/PDP7.vcproj b/Visual Studio Projects/PDP7.vcproj
index 0364ef2e..cd589e1b 100644
--- a/Visual Studio Projects/PDP7.vcproj	
+++ b/Visual Studio Projects/PDP7.vcproj	
@@ -245,6 +245,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -294,6 +298,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/PDP8.vcproj b/Visual Studio Projects/PDP8.vcproj
index a71bbc0a..758c4555 100644
--- a/Visual Studio Projects/PDP8.vcproj	
+++ b/Visual Studio Projects/PDP8.vcproj	
@@ -273,6 +273,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -322,6 +326,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/PDP9.vcproj b/Visual Studio Projects/PDP9.vcproj
index 781b2de3..58360e59 100644
--- a/Visual Studio Projects/PDP9.vcproj	
+++ b/Visual Studio Projects/PDP9.vcproj	
@@ -249,6 +249,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -298,6 +302,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/S3.vcproj b/Visual Studio Projects/S3.vcproj
index 752d9fba..6037598e 100644
--- a/Visual Studio Projects/S3.vcproj	
+++ b/Visual Studio Projects/S3.vcproj	
@@ -225,6 +225,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -274,6 +278,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/SDS.vcproj b/Visual Studio Projects/SDS.vcproj
index c15a9b5c..1df76ae1 100644
--- a/Visual Studio Projects/SDS.vcproj	
+++ b/Visual Studio Projects/SDS.vcproj	
@@ -241,6 +241,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -290,6 +294,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/SWTP.vcproj b/Visual Studio Projects/SWTP.vcproj
index e573d26e..b25d737b 100644
--- a/Visual Studio Projects/SWTP.vcproj	
+++ b/Visual Studio Projects/SWTP.vcproj	
@@ -201,6 +201,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -262,6 +266,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/VAX.vcproj b/Visual Studio Projects/VAX.vcproj
index 3aaebaa1..9470b3a8 100644
--- a/Visual Studio Projects/VAX.vcproj	
+++ b/Visual Studio Projects/VAX.vcproj	
@@ -288,6 +288,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -413,6 +417,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/VAX780.vcproj b/Visual Studio Projects/VAX780.vcproj
index 52c14deb..2330cab2 100644
--- a/Visual Studio Projects/VAX780.vcproj	
+++ b/Visual Studio Projects/VAX780.vcproj	
@@ -302,6 +302,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -435,6 +439,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>
diff --git a/Visual Studio Projects/lgp.vcproj b/Visual Studio Projects/lgp.vcproj
index 67701a97..bc15eb08 100644
--- a/Visual Studio Projects/lgp.vcproj	
+++ b/Visual Studio Projects/lgp.vcproj	
@@ -213,6 +213,10 @@
 				RelativePath="..\sim_fio.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.c"
 				>
@@ -262,6 +266,10 @@
 				RelativePath="..\sim_rev.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_serial.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_sock.h"
 				>