How to Fix the Frame Counter Bug

If you noticed, the frame counter start before than level start. The frame counter start, pass 4 frames, stop to load pallet, and after continue again. These 4 frames are 4 lost frames in counter, and can change the final time of the act.

To fix the Frame Counter Bug, first open the sonic1.asm.

Go to loc_39E8 subroutine, find and delete or comment this line:

Code:

      move.b   #1,($FFFFFE1E).w ; update time counter

Now go to Level_StartGame subroutine, and add this line:

Code:

      move.b   #1,($FFFFFE1E).w   ; update time counter

To have not problems when start from a lamppost, go to LevSz_ChkLamp and between these lines:

Code:

      move.w   ($FFFFD00C).w,d0
      bra.s   loc_60D0

Add this code:

Code:

;---------------------
; Fix the Frame Counter Bug  //  when start by a Lamppost not have this bug,
                  ; but after correct the main bug, you see zeros in place of the numbers
      movem.l  d0-a6,-(sp)
      move.l  #$5E400003,d0
      moveq  #0,d1
      move.b  ($FFFFFE23).w,d1 ; load  minutes
      jsr  Hud_Mins
      move.l  #$5EC00003,d0
      moveq  #0,d1
      move.b  ($FFFFFE24).w,d1 ; load  seconds
      jsr  Hud_Secs
      movem.l  (sp)+,d0-a6
;---------------------

Added the code to FIX the lamppost bug after apply this guide.

When start by a lamppost not have this bug, but after correct the main bug, you see zeros in place of the time.

This tutorial is now fixed, changed the place to put the code about the lamppost.

Just an annual year bump!