diff --git a/env/iss/bsp_write.c b/env/iss/bsp_write.c
index b6c6d6d..5f03f1b 100644
--- a/env/iss/bsp_write.c
+++ b/env/iss/bsp_write.c
@@ -9,21 +9,12 @@
 
 extern volatile uint32_t tohost;
 
-ssize_t _bsp_write(int fd, const void *ptr, size_t len) {
-
-  // char string[] = "hello world in bsp_write";
-  // uint32_t payload_1[4] = {64, 0, (uintptr_t)string, strlen(string)};
-  // tohost = (uint32_t)payload_1;
-
-  // const uint32_t *current = (const uint32_t *)ptr;
+__attribute__((optimize("O0"))) ssize_t _bsp_write(int fd, const void *ptr,
+                                                   size_t len) {
 
   if (isatty(fd)) {
-    // uint32_t payload[4] = {64, 0, (uint32_t)((uint32_t *)ptr), len};
-    // tohost = (uint32_t)payload;
-
     uint64_t payload[4] = {64, 0, (uintptr_t)((uint32_t *)ptr), len};
     tohost = (uint32_t)payload;
-
     /*
     // accoring to my understading this part is used fot uart wrrite for later
         for (size_t jj = 0; jj < len; jj++) {