diff --git a/doc/ca65.sgml b/doc/ca65.sgml
index 25a47b29a..9f45f8c54 100644
--- a/doc/ca65.sgml
+++ b/doc/ca65.sgml
@@ -419,6 +419,8 @@ The assembler accepts
       <tt><ref id=".P02" name=".P02"></tt> command was given).
 <item>all valid 6502 mnemonics plus a set of illegal instructions when in
       <ref id="6502X-mode" name="6502X mode">.
+<item>all valid 6502DTV mnemonics when in 6502DTV mode (after the
+      <tt><ref id=".PDTV" name=".PDTV"></tt> command was given).
 <item>all valid 65SC02 mnemonics when in 65SC02 mode (after the
       <tt><ref id=".PSC02" name=".PSC02"></tt> command was given).
 <item>all valid 65C02 mnemonics when in 65C02 mode (after the
@@ -3153,6 +3155,12 @@ Here's a list of all control commands and a description, what they do:
   (see <tt><ref id=".PC02" name=".PC02"></tt> command).
 
 
+<sect1><tt>.IFPDTV</tt><label id=".IFPDTV"><p>
+
+  Conditional assembly: Check if the assembler is currently in 6502DTV mode
+  (see <tt><ref id=".PDTV" name=".PDTV"></tt> command).
+
+
 <sect1><tt>.IFPSC02</tt><label id=".IFPSC02"><p>
 
   Conditional assembly: Check if the assembler is currently in 65SC02 mode
@@ -3585,6 +3593,14 @@ Here's a list of all control commands and a description, what they do:
   <tt><ref id=".P4510" name=".P4510"></tt>
 
 
+<sect1><tt>.PDTV</tt><label id=".PDTV"><p>
+
+  Enable the 6502DTV instruction set. This is a superset of the 6502 
+  instruction set.
+
+  See: <tt><ref id=".P02" name=".P02"></tt></tt>
+
+
 <sect1><tt>.POPCPU</tt><label id=".POPCPU"><p>
 
   Pop the last CPU setting from the stack, and activate it.
@@ -3848,10 +3864,11 @@ Here's a list of all control commands and a description, what they do:
   Switch the CPU instruction set. The command is followed by a string that
   specifies the CPU. Possible values are those that can also be supplied to
   the <tt><ref id="option--cpu" name="--cpu"></tt> command line option,
-  namely: 6502, 6502X, 65SC02, 65C02, 65816, 4510 and HuC6280.
+  namely: 6502, 6502X, 6502DTV, 65SC02, 65C02, 65816, 4510 and HuC6280.
 
   See: <tt><ref id=".CPU" name=".CPU"></tt>,
        <tt><ref id=".IFP02" name=".IFP02"></tt>,
+       <tt><ref id=".IFPDTV" name=".IFPDTV"></tt>,
        <tt><ref id=".IFP816" name=".IFP816"></tt>,
        <tt><ref id=".IFPC02" name=".IFPC02"></tt>,
        <tt><ref id=".IFPSC02" name=".IFPSC02"></tt>,
@@ -4586,6 +4603,7 @@ each supported CPU a constant similar to
     CPU_SWEET16
     CPU_HUC6280
     CPU_4510
+    CPU_6502DTV
 </verb></tscreen>
 
 is defined. These constants may be used to determine the exact type of the
@@ -4600,6 +4618,7 @@ another constant is defined:
     CPU_ISET_SWEET16
     CPU_ISET_HUC6280
     CPU_ISET_4510
+    CPU_ISET_6502DTV
 </verb></tscreen>
 
 The value read from the <tt/<ref id=".CPU" name=".CPU">/ pseudo variable may
diff --git a/src/ca65/condasm.c b/src/ca65/condasm.c
index b8bda4c7d..6198f4017 100644
--- a/src/ca65/condasm.c
+++ b/src/ca65/condasm.c
@@ -416,6 +416,16 @@ void DoConditionals (void)
                 CalcOverallIfCond ();
                 break;
 
+            case TOK_IFPDTV:
+                D = AllocIf (".IFPDTV", 1);
+                NextTok ();
+                if (IfCond) {
+                    SetIfCond (D, GetCPU() == CPU_6502DTV);
+                }
+                ExpectSep ();
+                CalcOverallIfCond ();
+                break;
+
             case TOK_IFPSC02:
                 D = AllocIf (".IFPSC02", 1);
                 NextTok ();
@@ -470,6 +480,7 @@ int CheckConditionals (void)
         case TOK_IFP4510:
         case TOK_IFP816:
         case TOK_IFPC02:
+        case TOK_IFPDTV:
         case TOK_IFPSC02:
         case TOK_IFREF:
             DoConditionals ();
diff --git a/src/ca65/pseudo.c b/src/ca65/pseudo.c
index 5b2ef0573..26d01cbf1 100644
--- a/src/ca65/pseudo.c
+++ b/src/ca65/pseudo.c
@@ -1552,6 +1552,14 @@ static void DoP4510 (void)
 
 
 
+static void DoPDTV (void)
+/* Switch to C64DTV CPU */
+{
+    SetCPU (CPU_6502DTV);
+}
+
+
+
 static void DoPageLength (void)
 /* Set the page length for the listing */
 {
@@ -2058,6 +2066,7 @@ static CtrlDesc CtrlCmdTab [] = {
     { ccKeepToken,      DoConditionals  },      /* .IFP4510 */
     { ccKeepToken,      DoConditionals  },      /* .IFP816 */
     { ccKeepToken,      DoConditionals  },      /* .IFPC02 */
+    { ccKeepToken,      DoConditionals  },      /* .IFPDTV */
     { ccKeepToken,      DoConditionals  },      /* .IFPSC02 */
     { ccKeepToken,      DoConditionals  },      /* .IFREF */
     { ccNone,           DoImport        },
@@ -2091,6 +2100,7 @@ static CtrlDesc CtrlCmdTab [] = {
     { ccNone,           DoPageLength    },
     { ccNone,           DoUnexpected    },      /* .PARAMCOUNT */
     { ccNone,           DoPC02          },
+    { ccNone,           DoPDTV          },
     { ccNone,           DoPopCPU        },
     { ccNone,           DoPopSeg        },
     { ccNone,           DoProc          },
diff --git a/src/ca65/scanner.c b/src/ca65/scanner.c
index 361a817c1..fb9905809 100644
--- a/src/ca65/scanner.c
+++ b/src/ca65/scanner.c
@@ -219,6 +219,7 @@ struct DotKeyword {
     { ".IFP4510",       TOK_IFP4510             },
     { ".IFP816",        TOK_IFP816              },
     { ".IFPC02",        TOK_IFPC02              },
+    { ".IFPDTV",        TOK_IFPDTV              },
     { ".IFPSC02",       TOK_IFPSC02             },
     { ".IFREF",         TOK_IFREF               },
     { ".IMPORT",        TOK_IMPORT              },
@@ -258,6 +259,7 @@ struct DotKeyword {
     { ".PAGELENGTH",    TOK_PAGELENGTH          },
     { ".PARAMCOUNT",    TOK_PARAMCOUNT          },
     { ".PC02",          TOK_PC02                },
+    { ".PDTV",          TOK_PDTV                },
     { ".POPCPU",        TOK_POPCPU              },
     { ".POPSEG",        TOK_POPSEG              },
     { ".PROC",          TOK_PROC                },
diff --git a/src/ca65/token.h b/src/ca65/token.h
index 8998cc162..ab36028fd 100644
--- a/src/ca65/token.h
+++ b/src/ca65/token.h
@@ -196,6 +196,7 @@ typedef enum token_t {
     TOK_IFP4510,
     TOK_IFP816,
     TOK_IFPC02,
+    TOK_IFPDTV,
     TOK_IFPSC02,
     TOK_IFREF,
     TOK_IMPORT,
@@ -229,6 +230,7 @@ typedef enum token_t {
     TOK_PAGELENGTH,
     TOK_PARAMCOUNT,
     TOK_PC02,
+    TOK_PDTV,
     TOK_POPCPU,
     TOK_POPSEG,
     TOK_PROC,