1 files changed, 4 insertions, 2 deletions

diff --git a/firmware/crt0.S b/firmware/crt0.S
index a0ff26684e..f2d4c81ddc 100644
--- a/firmware/crt0.S
+++ b/firmware/crt0.S
@@ -30,7 +30,6 @@ start:
         clrsr ie
         clrsr te
         ld a14, #0x3F0000
-        ;; copy data section from flash to ram.
 
         ld r5, 0xA5
         ldb @[a14 + 6], r5      ; disable watchdog
@@ -38,6 +37,7 @@ start:
         ld a11, #(_datacopy)    ; where the data section is in the flash
         ld a8, #(_datastart)    ; destination
 
+        ;; copy data section from flash to ram.
         ld a9, #_datasize
         ld r6, e9
         cmp eq, r6, #0
@@ -57,6 +57,7 @@ start:
         brt .data_copy_loop
 .data_copy_end:
 
+        ;; zero out bss
         ld r2, #0
         ld a8, #(_bssstart)     ; destination
         ld a9, #_bsssize        
@@ -76,7 +77,8 @@ start:
         cmp ugt, r9, #0
         brt .bss_init_loop
 .bss_init_end:
-        
+
+        ;; set stack pointer
         ld a15, _stackend
 
         ;; go!