From 4c4ff13237fe4637b7f55b60a17a170ab72ca661 Mon Sep 17 00:00:00 2001
From: Yuhang Ji <wakuflair@users.noreply.github.com>
Date: Thu, 4 Jul 2024 22:19:57 +0800
Subject: [PATCH] Update HACKING.md (#439)

Add the missing `& offset_mask` to `offset_stop of memo`
---
 HACKING.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/HACKING.md b/HACKING.md
index 4327ff4..58920bc 100644
--- a/HACKING.md
+++ b/HACKING.md
@@ -259,7 +259,7 @@ offset_start of memo = (int16*) LVAL_page[offset_num_rows + (row_id * 2) + 2]
 if (row_id = 0)
      offset_stop of memo = 2048(jet3) or 4096(jet4)
 else
-     offset_stop of memo = (int16*) LVAL_page[offset_num_row + (row_id * 2)]
+     offset_stop of memo = (int16*) LVAL_page[offset_num_row + (row_id * 2)] & offset_mask // offset_mask = 0x1fff
 ```
 
 The length (partial if type 2) for the memo is: