Update notes

notes/m2-notes.txt

@@ -181,6 +181,7 @@ Subroutines
 80EC004: get user string pointer
 80EC010: copy string from r0, of max length r1, to battle target slot, and terminate with [00 FF]
 80EC046: get target string pointer
+80F49DC: divide r0 by r1, return quotient in r0
 
 8B1B8B8 has a jump table with 13 entries for the [1A FF xx 00] code:
   00: ?

src/c/ext.c

@@ -8,3 +8,4 @@ int __attribute__((naked)) m2_resetwindow(WINDOW* window, bool skip_redraw) {}
 void __attribute__((naked)) m2_hpwindow_up(int character) {}
 bool __attribute__((naked)) m2_isequipped(int item_index) {}
 void __attribute__((naked)) m2_soundeffect(int index) {}
+int __attribute__((naked)) m2_div(int dividend, int divisor) {}

src/c/goods.c

@@ -6,6 +6,9 @@
 
 // Process the outer Goods window (i.e. character selection)
 // Called every frame. Replaces $80BF858 fully.
+// Returns 1 if the user steps into the inner window,
+// -1 if the user steps back out to the previous window,
+// and 0 for no action.
 int goods_outer_process(WINDOW* window)
 {
     // Get the weird signed parity value

src/m2-hack.asm

@@ -849,6 +849,7 @@ m2_enemy_attributes:
 .definelabel m2_resetwindow         ,0x80BE490
 .definelabel m2_hpwindow_up         ,0x80D3F0C
 .definelabel m2_curhpwindow_down    ,0x80D41D8
+.definelabel m2_div                 ,0x80F49D8
 
 //==============================================================================
 // Code files