diff --git a/.ev3duder b/.ev3duder
index a96aa0e..4202bc4 100644
--- a/.ev3duder
+++ b/.ev3duder
@@ -1 +1 @@
-..
\ No newline at end of file
+COM3
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 7ff508b..32b59a7 100644
--- a/Makefile
+++ b/Makefile
@@ -20,6 +20,7 @@ print-%  : ; @echo $* = $($*)
 ifeq ($(OS),Windows_NT)
 RM = del /Q
 FLAGS += -municode
+SRCS += src/btwin.c
 BIN_NAME := $(addsuffix .exe, $(BIN_NAME))
 else
 SRCS += src/btunix.c
diff --git a/cat.c b/cat.c
new file mode 100644
index 0000000..c489f8e
--- /dev/null
+++ b/cat.c
@@ -0,0 +1,9 @@
+/** @file 	cat.sh
+  *	@brief 	cat(1) wrapper for cat'ing to the ev3 LCD
+  * @author Ahmad Fatoum
+  */
+  
+int main(void)
+{
+	
+}
\ No newline at end of file
diff --git a/cat.sh b/cat.sh
new file mode 100644
index 0000000..cc68847
--- /dev/null
+++ b/cat.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+## @file cat.sh
+## cat(1) wrapper for cat'ing to the ev3 LCD
+## calls cat on input, builds a bytecode executable
+## and pipes it to the VM via netcat
+## @author Ahmad Fatoum
+
+#consts
+LINE_WIDTH = 20
+
+
+CAT = "$(cat $@)"
+
+IFS = '\n' read -ra LINE <<< "$IN"
+for i in "${LINE[@]}"; do
+    # loop for each < LINE_WIDTH
+	# generate bytecode
+	
+done
+
diff --git a/ev3duder.zip b/ev3duder.zip
new file mode 100644
index 0000000..a86538e
Binary files /dev/null and b/ev3duder.zip differ
diff --git a/src/btserial.h b/src/btserial.h
index e3c1f54..7effd33 100644
--- a/src/btserial.h
+++ b/src/btserial.h
@@ -5,8 +5,14 @@
  */
 
 #include "defs.h"
-void *bt_open(void);
+
+#ifdef _WIN32
+void *bt_open(const wchar_t *device);
+#else
+void *bt_open(const char *device);
+#endif
 int bt_write(void* fd, const u8* buf, size_t count);
 int bt_read(void* fd, u8* buf, size_t count, int milliseconds);
+void bt_close(void*);
 const wchar_t *bt_error(void* fd); 
 
diff --git a/src/btunix.c b/src/btunix.c
index 3870f41..abe1a82 100644
--- a/src/btunix.c
+++ b/src/btunix.c
@@ -18,11 +18,11 @@
 #define BT "/dev/cu.EV3-SerialPort"
 // ^ TODO: add ability to find differently named EV3's
 static void handle_sigint(int signo);
-void *bt_open()
+void *bt_open(const char *file)
 {
-	//  signal(SIGINT, handle_sigint); 
+	//  signal(SIGINT, handle_sigint);
 	int *fd = malloc(sizeof(int));
-	*fd = open(BT, O_RDWR);
+	*fd = open(file ?: BT, O_RDWR);
 	return *fd != -1 ? fd : NULL;
 }
 
@@ -48,7 +48,7 @@ static void handle_alarm(int sig)
 	(void)sig; longjmp(env, 1);
 }
 int bt_read(void* fd_, u8* buf, size_t count, int milliseconds)
-{ // goto <3
+{ //FIXME: goto <3
 	(void)count;
 	(void)milliseconds;
 	int fd = *(int*)fd_;
@@ -68,7 +68,7 @@ int bt_read(void* fd_, u8* buf, size_t count, int milliseconds)
 		for (ssize_t ret=recvd; recvd < packet_len; recvd += ret)
 		{
 			if (milliseconds != -1) {
-				setitimer(ITIMER_REAL, &timer, NULL);
+				setitimer(ITIMER_REAL, &timer, NULL);  //TODO: maybe move this out the loop? would handle diosconnects that way
 				ret = read(fd, buf+recvd, packet_len-recvd);
 				alarm(0);
 			}else
@@ -91,5 +91,9 @@ int bt_read(void* fd_, u8* buf, size_t count, int milliseconds)
 	return recvd;
 
 }
+void bt_close(void *handle)
+{
+	close(*(int*)handle);
+}
 const wchar_t *bt_error(void* fd_) { (void)fd_; return L"Errors not implemented yet";}
 
diff --git a/src/btwin.c b/src/btwin.c
new file mode 100644
index 0000000..4f8a2cc
--- /dev/null
+++ b/src/btwin.c
@@ -0,0 +1,45 @@
+/**
+ * @file io.c - Input/Output wrappers for Bluetooth (Win32)
+ * @author Ahmad Fatoum
+ * @license Code available under terms of the GNU General Public License
+ */
+#include <stdlib.h>
+#include <errno.h>
+
+#include <windows.h>
+
+#include "defs.h"
+
+#define BT L"COM1"
+
+// ^ TODO: add multiple COM ports
+void *bt_open(const wchar_t *device)
+{
+	HANDLE handle = CreateFileW(device ?: BT, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
+	return handle != INVALID_HANDLE_VALUE ? handle : NULL;
+}
+
+int bt_write(void* handle, const u8* buf, size_t count)
+{
+	DWORD dwBytesWritten;
+	
+	buf++;count--; // omit HID report number
+	if (!WriteFile(handle, buf, count, &dwBytesWritten, NULL))
+		return -1;
+	
+	return dwBytesWritten;
+}
+int bt_read(void *handle, u8* buf, size_t count, int milliseconds)
+{
+	(void) milliseconds; // https://msdn.microsoft.com/en-us/library/windows/desktop/aa363190%28v=vs.85%29.aspx
+	DWORD dwBytesRead;
+	if (!ReadFile(handle, buf, count, &dwBytesRead, NULL))
+		return -1;
+	return dwBytesRead;
+}
+void bt_close(void *handle)
+{
+	CloseHandle(handle);
+}
+const wchar_t *bt_error(void* fd_) { (void)fd_; return L"Errors not implemented yet";}
+
diff --git a/src/cat.c b/src/cat.c
new file mode 100644
index 0000000..26d1244
--- /dev/null
+++ b/src/cat.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "ev3_io.h"
+
+#include "defs.h"
+#include "systemcmd.h"
+#include "error.h"
+#include "funcs.h"
+
+/**
+ * @brief Concatenate files to the LCD screen.
+ * @param [in] path remote FILE*s
+ * @param [in] count number of FILE*s to cat
+ *
+ * @retval error according to enum #ERR
+ * @see http://topikachu.github.io/python-ev3/UIdesign.html
+ */
+#define MAX_READ 1024
+extern int cat(const char *rem, size_t count)
+{
+	
+	
+}
\ No newline at end of file
diff --git a/src/ev3_io.h b/src/ev3_io.h
index 953a3c5..cc9e15d 100644
--- a/src/ev3_io.h
+++ b/src/ev3_io.h
@@ -12,7 +12,7 @@
 EXTERN int (*ev3_write)(void *, const u8*, size_t);
 EXTERN int (*ev3_read_timeout)(void *, u8*, size_t, int milliseconds);
 EXTERN const wchar_t* (*ev3_error)(void *);
-
+EXTERN void(*ev3_close)(void*);
 EXTERN void *handle;
 #endif
 
diff --git a/src/funcs.h b/src/funcs.h
index 6a8a244..fdd896d 100644
--- a/src/funcs.h
+++ b/src/funcs.h
@@ -14,6 +14,7 @@
 #define EV3DUDER_FUNCS_H
 
 #include <stdio.h>
+#include <stddef.h>
 /**
  * @name    EV3 commands
  * @brief   EV3 USB-served commands
@@ -29,18 +30,28 @@
 
 //! upload local file loc to remote destination rem
 extern int up(FILE* loc, const char *rem);
+
 //! download remote source \p rem to local file \p loc
 extern int dl(const char *rem, FILE* loc);
+
 //! print HID information, beep and exit
 extern int test(void);
+
 //! run remote .rbf file \p rem via VM
 extern int run(const char *rem);
+
 //! list contents of remote directory \p rem
 extern int ls(const char *rem);
+
+//! concatenate contents of \p count of \p rem FILEs to the EV3's LCD
+extern int cat(const char *rem, size_t count);
+
 //! remove remote file or directory \p rem
 extern int rm(const char *rem);
+
 //! create directory \p rem on remote system
 extern int mkdir(const char *rem);
+
 //! fill \p *buf with a rbf file executing \p cmd
 extern size_t mkrbf(char **buf, const char *cmd);
 #endif
diff --git a/src/ls.c b/src/ls.c
index 989106e..03be5fa 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -18,6 +18,7 @@
  * @see http://topikachu.github.io/python-ev3/UIdesign.html
  * @bug Doesn't handle replies over 1000 byte in length.
  *      implementation of \p CONTINUTE_LIST_FILES would be required
+ *		EDIT: CONTINUE_LIST_FILES isn't even implemented in "firmware".
  */
 #define MAX_READ 1024
 int ls(const char *path)
@@ -61,7 +62,7 @@ int ls(const char *path)
         errmsg = "`LIST_FILES` was denied.";
         return ERR_VM;
     }
-    fputs(listrep->list, stdout);
+    fwrite(listrep->list, 1, listrep->packetLen - 10, stdout); // No NUL Termination over Serial COM for whatever reason.
 	//
 // From the LEGO docs:  - LIST_FILES should work as long as list does not exceed 1014 bytes. CONTINUE_LISTFILES has NOT been implemented yet.
 #if !LEGO_FIXED_CONTINUE_LIST_FILES
diff --git a/src/utf8.h b/src/utf8.h
index ff786ad..12a9add 100644
--- a/src/utf8.h
+++ b/src/utf8.h
@@ -19,6 +19,7 @@
   u8str[u8sz] = '\0'; \
   WideCharToMultiByte(CP_UTF8, 0, wstr, len, u8str, u8sz, NULL, NULL); \
   u8str; })
+#define fgetts fgetws
 #else
 
 #define tchar char
@@ -28,6 +29,7 @@
 #define tstrchr(str, chr) strchr(str, chr)
 #define tstrlen(str) strlen(str)
 #define tgetenv(str) getenv(str)
+#define fgetts fgets
 #define PRIts "s"
 #define U8(path, len) ((void)len, path) 
 #endif
diff --git a/test.c b/test.c
new file mode 100644
index 0000000..20e13c2
--- /dev/null
+++ b/test.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <windows.h>
+#include "src/btserial.h"
+static const unsigned char tone[] = "\x0\x0F\x00\0\0\x80\x00\x00\x94\x01\x81\x02\x82\xE8\x03\x82\xE8\x03";
+
+#define MAX_STR 256
+
+int main(int argc, char *argv[])
+{
+	HANDLE handle = bt_open(L"COM3");
+	int written = bt_write(handle, tone, sizeof tone - 1);
+	CloseHandle(handle);
+    printf("Wrote %d bytes of %u", written, sizeof tone-1);
+	return 0;
+}
+