Added code for modifying what items link starts with

Intro/intro.asm

@@ -1,7 +1,5 @@
 ;===========================================================
 ; Intro
-; 
-; asm for no Header ALTTP US Rom
 ; game will Switch to part 1 after your uncle left the house
 ;===========================================================
 
@@ -25,4 +23,85 @@ namespace Intro
     JSL $00FC41   ; fix monsters
     RTL
   }  ; label Main
+
+  Items: {
+    ; SRM Start Modyfier
+    ; This ASM was written by Euclid, modified by Conn; thanks to MoN for his banks research
+    ; This is a ASM FrontEnd Code for Zelda ALTTP (US, no header) to modify the sram on startup
+    ; the values are included to better distinguish where is what. You need to set your own values. Description at the end.
+
+    lorom
+
+    org $0cdc5a ; jsr to main code
+    jsr $ffb1
+
+    org $0cffb1 ; main code
+
+    LDA #$0201      ; 01=part of the game $3C5 - 02=Progress flags $3C6      
+    STA $7003C5,x
+
+    LDA #$0201      ; 01=Map indicator $3c7 - 02=Starting entrance $3C8        
+    STA $7003C7,x
+
+    ;LDA #$0201      ; disabled:01=sword,  02=shield to start with        
+    ;STA $700359,x   ;save disabled: sword/shield save
+
+    ;LDA #$0707       ; disabled: the first 07 is the maximum carrying capacity of arrows (70) the second 07 of bombs (50) in case you renounce on the wishing pond
+    ;STA $700370,x   ; save disabled: enable by deleting the";"
+
+    LDY #$0000              
+    RTS
+
+
+    ;---------------------------------------------------------
+    ;$3C5: $00: Unset, Will put Link in his bed state at the beginning of the game. (Also can't use sword or shield)
+    ;      $01: Start in the castle on start up.
+    ;      $02: Indicates you have completed the first Hyrule Castle dungeon.
+    ;      $03: Indicates you have beaten Agahnim and are now searching for crystals.
+    ;      $04 and above: meaningless. Though, you could write code using them to expand the event system perhaps.
+
+    ;$3C6: Progress Flags (bitwise)
+    ;    00 - Set after your Uncle gives you his gear in the secret passage. Prevents him from showing up there again.
+    ;    01 - Indicates that you've touched the dying priest in Sanctuary.
+    ;    02 - Set after you bring Zelda to sanctuary?
+    ;    03 - Unused? (98% certainty)
+    ;    04 - Set after Link's Uncle leaves your house. It's used to prevent him from respawning there.  
+    ;    05 - Set after you obtain the Book of Mudora (this is a guess)
+    ;    06 - Seems to be a persistent flag that toggles between two possible statements that a fortune teller can give you during your "reading".
+    ;         In other words, don't expect this to stay in one state if you're using fortune tellers. Has no other known purpose.
+    ;    07 - Unused? (98% certainty)
+    ;    10 - Start value (in house, bed)
+
+    ;$3C7: Map Icons Indicator 2 (value, not bitwise)
+    ;    00 - start value (cross at Hyrule Castle)
+    ;    01 - cross at Sahasrala's house
+    ;    02 - cross at ruins
+    ;    03 - The Three Pendants
+    ;    04 - Master Sword in Lost Woods
+    ;    05 - Agahnim (skull icon at Hyrule Castle)
+    ;    06 - Just crystal 1 shown (Sahasrala's idea)
+    ;    07 - All crystals shown
+    ;    08 - Agahnim (skull icon at Ganon's Tower)
+    ;    All values beyond 8 are invalid, it seems.
+
+
+    ;$3C8: Starting Entrance to use. Abbreviations: LH = Link's House - SA = Sanctuary - MC = Mountain Cave - PP = Pyramid of Power in DW  
+    ;    00 - Start the game in Link's house always.
+    ;    01 - SA.
+    ;    03 - Secret passage under HC garden (near dying uncle).
+    ;    05 - LH or SA or MC.
+            
+    ;$359: Sword you start with
+    ;    00 - No sword
+    ;    01 - Fighter Sword
+    ;    02 - Master Sword
+    ;    03 - Tempered Sword
+    ;    04 - Golden Sword
+
+    ;$35A: Shield you start with           .      
+    ;     00 - No shield
+    ;     01 - Blue Shield
+    ;     02 - Hero's Shield
+    ;     03 - Mirror Shield  
+  }
 }  ; namespace Intro