diff --git a/sim/state/analog.ts b/sim/state/analog.ts
index 195c04cd..7122b4f1 100644
--- a/sim/state/analog.ts
+++ b/sim/state/analog.ts
@@ -48,19 +48,12 @@ namespace pxsim {
                     let v = "vSIM"
                     for (let i = 0; i < buf.data.length; ++i)
                         buf.data[i] = v.charCodeAt(i) || 0
-                    console.log("analog read");
-                    console.log(buf.data);
                     return buf.data.length
                 },
                 write: buf => {
-                    console.log("analog write");
-                    console.log(buf);
                     return 2
                 },
                 ioctl: (id, buf) => {
-                    console.log("analog ioctl");
-                    console.log(id);
-                    console.log(buf);
                     return 2;
                 }
             })
diff --git a/sim/state/control.ts b/sim/state/control.ts
index 2fd41ce4..54f8154c 100644
--- a/sim/state/control.ts
+++ b/sim/state/control.ts
@@ -85,7 +85,7 @@ namespace pxsim.control {
     }
 
     export function dmesg(s: string) {
-        console.log("DMESG: " + s)
+        //console.log("DMESG: " + s)
     }
 }
 
diff --git a/sim/state/motor.ts b/sim/state/motor.ts
index 308d2197..a453c344 100644
--- a/sim/state/motor.ts
+++ b/sim/state/motor.ts
@@ -35,21 +35,14 @@ namespace pxsim {
                     let v = "vSIM"
                     for (let i = 0; i < buf.data.length; ++i)
                         buf.data[i] = v.charCodeAt(i) || 0
-                    console.log("motor read");
-                    console.log(buf.data);
                     return buf.data.length
                 },
                 write: buf => {
                     if (buf.data.length == 0) return 2;
                     const cmd = buf.data[0];
-                    console.log("motor write");
-                    console.log(buf);
                     return 2
                 },
                 ioctl: (id, buf) => {
-                    console.log("motor ioctl");
-                    console.log(id);
-                    console.log(buf);
                     return 2;
                 }
             });
diff --git a/sim/state/output.ts b/sim/state/output.ts
index f0229fe5..d884b3d5 100644
--- a/sim/state/output.ts
+++ b/sim/state/output.ts
@@ -38,7 +38,6 @@ namespace pxsim {
                     switch (cmd) {
                         case DAL.opProgramStart: {
                             // init
-                            console.log('init');
                             return 2;
                         }
                         case DAL.opOutputReset: {
@@ -133,15 +132,9 @@ namespace pxsim {
                             console.warn('unknown cmd: ' + cmd);
                             break;
                     }
-
-                    console.log("pwm write");
-                    console.log(buf);
                     return 2
                 },
                 ioctl: (id, buf) => {
-                    console.log("pwm ioctl");
-                    console.log(id);
-                    console.log(buf);
                     return 2;
                 }
             });
diff --git a/sim/state/uart.ts b/sim/state/uart.ts
index cc612b03..70247b9a 100644
--- a/sim/state/uart.ts
+++ b/sim/state/uart.ts
@@ -101,32 +101,28 @@ namespace pxsim {
                     let v = "vSIM"
                     // for (let i = 0; i < buf.data.length; ++i)
                     //     buf.data[i] = v.charCodeAt(i) || 0
-                    console.log("uart read");
-                    console.log(buf.data);
                     return buf.data.length
                 },
                 write: buf => {
-                    console.log("uart write");
-                    console.log(buf);
                     return 2
                 },
                 ioctl: (id, buf) => {
                     switch (id) {
                         case IO.UART_SET_CONN: {
                             // Set mode
-                            console.log("IO.UART_SET_CONN");
+                            //console.log("IO.UART_SET_CONN");
                             for (let port = 0; port < DAL.NUM_INPUTS; port++) {
                                 const connection = buf.data[DevConOff.Connection + port]; // CONN_NONE, CONN_INPUT_UART
                                 const type = buf.data[DevConOff.Type + port];
                                 const mode = buf.data[DevConOff.Mode + port];
-                                console.log(`${port}, mode: ${mode}`)
+                                //console.log(`${port}, mode: ${mode}`)
                                 const node = ev3board().getInputNodes()[port];
                                 if (node) node.setMode(mode);
                             }
                             return 2;
                         }
                         case IO.UART_CLEAR_CHANGED: {
-                            console.log("IO.UART_CLEAR_CHANGED")
+                            //console.log("IO.UART_CLEAR_CHANGED")
                             for (let port = 0; port < DAL.NUM_INPUTS; port++) {
                                 const connection = buf.data[DevConOff.Connection + port]; // CONN_NONE, CONN_INPUT_UART
                                 const type = buf.data[DevConOff.Type + port];
@@ -137,7 +133,7 @@ namespace pxsim {
                             return 2;
                         }
                         case IO.UART_READ_MODE_INFO: {
-                            console.log("IO.UART_READ_MODE_INFO")
+                            //console.log("IO.UART_READ_MODE_INFO")
                             const port = buf.data[UartCtlOff.Port];
                             const mode = buf.data[UartCtlOff.Mode];
                             const node = ev3board().getInputNodes()[port];
@@ -145,9 +141,6 @@ namespace pxsim {
                             return 2;
                         }
                     }
-                    console.log("uart ioctl");
-                    console.log(id);
-                    console.log(buf);
                     return 2;
                 }
             })