DMC11 Rework

- Reworked the pdp11_dmc implementation to use the TMXR library for network I/O.
- Removed the need for a Primary or Secondary mode describing a DMC line setup/operation.
- Added additional unit to perform I/O polling activities to the DMC and DMP/DMV devices.
- Added Modem status information describing the link state to the register information provided.
- Added a command out queue to pass status information to the host.

Visual Studio Projects/PDP11.vcproj

@@ -428,10 +428,6 @@
 				RelativePath="..\PDP11\pdp11_defs.h"
 				>
 			</File>
-			<File
-				RelativePath="..\PDP11\pdp11_dmc.h"
-				>
-			</File>
 			<File
 				RelativePath="..\PDP11\pdp11_dup.h"
 				>

Visual Studio Projects/VAX730.vcproj

@@ -387,10 +387,6 @@
 				RelativePath="..\PDP11\pdp11_ddcmp.h"
 				>
 			</File>
-			<File
-				RelativePath="..\PDP11\pdp11_dmc.h"
-				>
-			</File>
 			<File
 				RelativePath="..\PDP11\pdp11_io_lib.h"
 				>

Visual Studio Projects/VAX750.vcproj

@@ -395,10 +395,6 @@
 				RelativePath="..\PDP11\pdp11_ddcmp.h"
 				>
 			</File>
-			<File
-				RelativePath="..\PDP11\pdp11_dmc.h"
-				>
-			</File>
 			<File
 				RelativePath="..\PDP11\pdp11_io_lib.h"
 				>

Visual Studio Projects/VAX780.vcproj

@@ -407,10 +407,6 @@
 				RelativePath="..\PDP11\pdp11_ddcmp.h"
 				>
 			</File>
-			<File
-				RelativePath="..\PDP11\pdp11_dmc.h"
-				>
-			</File>
 			<File
 				RelativePath="..\PDP11\pdp11_io_lib.h"
 				>