diff --git a/.vscode/launch.json b/.vscode/launch.json
index 1856298..43d3fca 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -17,6 +17,7 @@
             },
             "cwd": "${workspaceRoot}",
             "gdb": "riscv64-unknown-elf-gdb",
+            "openGdbConsole": true,
             "presentation": {
                 "hidden": false,
                 "group": "FW Debug",
@@ -30,11 +31,16 @@
             "cwd": "${workspaceRoot}",
             "program": "${workspaceFolder}/build/Debug/src/riscv-vp",
             "arguments": "--isa 'rv32gc|msu_vp' -v DEBUG --disass -f fw/hello-world/hello.elf -g 10000",
-            "presentation": {
-                "hidden": false,
-                "group": "FW Debug",
-                "order": 1
-            }
+            "openGdbConsole": true
+        },
+        {
+            "type": "gdb",
+            "request": "launch",
+            "name": "Launch 64bit VP with gdbserver",
+            "cwd": "${workspaceRoot}",
+            "program": "${workspaceFolder}/build/Debug/src/riscv-vp",
+            "arguments": "--isa 'rv64gc|msu_vp' -v TRACEALL --disass -f fw/hello-world/hello.elf -g 10000",
+            "openGdbConsole": true
         },
         {
             "type": "gdb",
@@ -42,7 +48,7 @@
             "name": "Launch VP",
             "cwd": "${workspaceRoot}",
             "program": "${workspaceFolder}/build/Debug/src/riscv-vp",
-            "arguments": "-v DEBUG -t 3 --isa tgc5c -f fw/hello-world/hello.elf",
+            "arguments": "-v DEBUG -t 3 --isa 'tgc5c|mu_p' -f fw/hello-world/hello.elf",
             "openGdbConsole": true
         },
         {
diff --git a/dbt-rise-riscv b/dbt-rise-riscv
index f4bfd06..48f8983 160000
--- a/dbt-rise-riscv
+++ b/dbt-rise-riscv
@@ -1 +1 @@
-Subproject commit f4bfd06d7eaa3369fde9db3cb3cc28ab9b4bcf35
+Subproject commit 48f8983d7ee71cfcccc8216ff159ce5367f4c6a4
diff --git a/fw/hello-world/Makefile b/fw/hello-world/Makefile
index e344dd1..f980993 100644
--- a/fw/hello-world/Makefile
+++ b/fw/hello-world/Makefile
@@ -8,6 +8,8 @@ BOARD=riscv_vp
 LINK_TARGET=flash
 RISCV_ARCH:=rv32imc
 RISCV_ABI:=ilp32
+#RISCV_ARCH:=rv64imc
+#RISCV_ABI:=lp64
 LDFLAGS := -g -march=$(RISCV_ARCH) -mabi=$(RISCV_ABI)
 
 compiler := $(shell which riscv64-unknown-elf-gcc)