diff --git a/Visual Studio Projects/ALTAIR.vcproj b/Visual Studio Projects/ALTAIR.vcproj
index 20741a3b..5edbef9b 100644
--- a/Visual Studio Projects/ALTAIR.vcproj	
+++ b/Visual Studio Projects/ALTAIR.vcproj	
@@ -210,6 +210,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -259,6 +263,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/AltairZ80.vcproj b/Visual Studio Projects/AltairZ80.vcproj
index 12d0702f..b4efe713 100644
--- a/Visual Studio Projects/AltairZ80.vcproj	
+++ b/Visual Studio Projects/AltairZ80.vcproj	
@@ -309,6 +309,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -370,6 +374,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/ECLIPSE.vcproj b/Visual Studio Projects/ECLIPSE.vcproj
index 4dfbc491..84545ed5 100644
--- a/Visual Studio Projects/ECLIPSE.vcproj	
+++ b/Visual Studio Projects/ECLIPSE.vcproj	
@@ -241,6 +241,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -286,6 +290,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/GRI.vcproj b/Visual Studio Projects/GRI.vcproj
index 29b5acba..dc77ef99 100644
--- a/Visual Studio Projects/GRI.vcproj	
+++ b/Visual Studio Projects/GRI.vcproj	
@@ -205,6 +205,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -254,6 +258,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/H316.vcproj b/Visual Studio Projects/H316.vcproj
index a48ef4fe..b6ca8d91 100644
--- a/Visual Studio Projects/H316.vcproj	
+++ b/Visual Studio Projects/H316.vcproj	
@@ -221,6 +221,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -270,6 +274,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/HP2100.vcproj b/Visual Studio Projects/HP2100.vcproj
index 8cdd3fbc..fdabac52 100644
--- a/Visual Studio Projects/HP2100.vcproj	
+++ b/Visual Studio Projects/HP2100.vcproj	
@@ -309,6 +309,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -382,6 +386,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/I1401.vcproj b/Visual Studio Projects/I1401.vcproj
index 3de4930f..a458895f 100644
--- a/Visual Studio Projects/I1401.vcproj	
+++ b/Visual Studio Projects/I1401.vcproj	
@@ -221,6 +221,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -274,6 +278,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/I1620.vcproj b/Visual Studio Projects/I1620.vcproj
index 4f1eb453..9345a449 100644
--- a/Visual Studio Projects/I1620.vcproj	
+++ b/Visual Studio Projects/I1620.vcproj	
@@ -225,6 +225,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -274,6 +278,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/I7094.vcproj b/Visual Studio Projects/I7094.vcproj
index d1871c95..209353ba 100644
--- a/Visual Studio Projects/I7094.vcproj	
+++ b/Visual Studio Projects/I7094.vcproj	
@@ -241,6 +241,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -294,6 +298,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/IBM1130.vcproj b/Visual Studio Projects/IBM1130.vcproj
index c59f1b04..b4f579b0 100644
--- a/Visual Studio Projects/IBM1130.vcproj	
+++ b/Visual Studio Projects/IBM1130.vcproj	
@@ -245,6 +245,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -318,6 +322,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/ID16.vcproj b/Visual Studio Projects/ID16.vcproj
index 340ec469..e5bdc904 100644
--- a/Visual Studio Projects/ID16.vcproj	
+++ b/Visual Studio Projects/ID16.vcproj	
@@ -253,6 +253,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -302,6 +306,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/ID32.vcproj b/Visual Studio Projects/ID32.vcproj
index c7b34690..f3d19a30 100644
--- a/Visual Studio Projects/ID32.vcproj	
+++ b/Visual Studio Projects/ID32.vcproj	
@@ -253,6 +253,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -302,6 +306,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/NOVA.vcproj b/Visual Studio Projects/NOVA.vcproj
index be2bc396..8b977676 100644
--- a/Visual Studio Projects/NOVA.vcproj	
+++ b/Visual Studio Projects/NOVA.vcproj	
@@ -241,6 +241,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -290,6 +294,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/PDP1.vcproj b/Visual Studio Projects/PDP1.vcproj
index c1954faa..e56b674e 100644
--- a/Visual Studio Projects/PDP1.vcproj	
+++ b/Visual Studio Projects/PDP1.vcproj	
@@ -225,6 +225,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -274,6 +278,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/PDP10.vcproj b/Visual Studio Projects/PDP10.vcproj
index 39fd3950..b5f0e406 100644
--- a/Visual Studio Projects/PDP10.vcproj	
+++ b/Visual Studio Projects/PDP10.vcproj	
@@ -259,6 +259,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -312,6 +316,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/PDP15.vcproj b/Visual Studio Projects/PDP15.vcproj
index 8ecf0638..4ce3d394 100644
--- a/Visual Studio Projects/PDP15.vcproj	
+++ b/Visual Studio Projects/PDP15.vcproj	
@@ -237,6 +237,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -286,6 +290,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/PDP4.vcproj b/Visual Studio Projects/PDP4.vcproj
index c6accca9..deb4108a 100644
--- a/Visual Studio Projects/PDP4.vcproj	
+++ b/Visual Studio Projects/PDP4.vcproj	
@@ -237,6 +237,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -286,6 +290,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/PDP7.vcproj b/Visual Studio Projects/PDP7.vcproj
index cd589e1b..dfce8fe9 100644
--- a/Visual Studio Projects/PDP7.vcproj	
+++ b/Visual Studio Projects/PDP7.vcproj	
@@ -237,6 +237,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -286,6 +290,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/PDP8.vcproj b/Visual Studio Projects/PDP8.vcproj
index 758c4555..aeda4fde 100644
--- a/Visual Studio Projects/PDP8.vcproj	
+++ b/Visual Studio Projects/PDP8.vcproj	
@@ -265,6 +265,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -314,6 +318,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/PDP9.vcproj b/Visual Studio Projects/PDP9.vcproj
index 58360e59..274a555e 100644
--- a/Visual Studio Projects/PDP9.vcproj	
+++ b/Visual Studio Projects/PDP9.vcproj	
@@ -241,6 +241,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -290,6 +294,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/S3.vcproj b/Visual Studio Projects/S3.vcproj
index 6037598e..db14343f 100644
--- a/Visual Studio Projects/S3.vcproj	
+++ b/Visual Studio Projects/S3.vcproj	
@@ -217,6 +217,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -266,6 +270,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/SDS.vcproj b/Visual Studio Projects/SDS.vcproj
index 1df76ae1..7f1afa25 100644
--- a/Visual Studio Projects/SDS.vcproj	
+++ b/Visual Studio Projects/SDS.vcproj	
@@ -233,6 +233,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -282,6 +286,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/TX-0.vcproj b/Visual Studio Projects/TX-0.vcproj
index 667b6b68..a735cf90 100644
--- a/Visual Studio Projects/TX-0.vcproj	
+++ b/Visual Studio Projects/TX-0.vcproj	
@@ -195,6 +195,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -211,6 +215,10 @@
 				RelativePath="..\sim_sock.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_tape.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_timer.c"
 				>
@@ -260,6 +268,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/lgp.vcproj b/Visual Studio Projects/lgp.vcproj
index bc15eb08..b605a3e1 100644
--- a/Visual Studio Projects/lgp.vcproj	
+++ b/Visual Studio Projects/lgp.vcproj	
@@ -205,6 +205,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -254,6 +258,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/swtp6800mp-a.vcproj b/Visual Studio Projects/swtp6800mp-a.vcproj
index fcd0851a..7a70d98d 100644
--- a/Visual Studio Projects/swtp6800mp-a.vcproj	
+++ b/Visual Studio Projects/swtp6800mp-a.vcproj	
@@ -229,6 +229,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -278,6 +282,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>
diff --git a/Visual Studio Projects/swtp6800mp-a2.vcproj b/Visual Studio Projects/swtp6800mp-a2.vcproj
index 6dd27c3e..cf5ade08 100644
--- a/Visual Studio Projects/swtp6800mp-a2.vcproj	
+++ b/Visual Studio Projects/swtp6800mp-a2.vcproj	
@@ -233,6 +233,10 @@
 				RelativePath="..\sim_console.c"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.c"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.c"
 				>
@@ -278,6 +282,10 @@
 				RelativePath="..\sim_defs.h"
 				>
 			</File>
+			<File
+				RelativePath="..\sim_disk.h"
+				>
+			</File>
 			<File
 				RelativePath="..\sim_ether.h"
 				>