Merge pull request #186 from cassidoxa/init_save

Delete save backup when header name doesn't match SRAM

init.asm

@@ -6,55 +6,52 @@
 ;--------------------------------------------------------------------------------
 Init_Primary:
 	LDA.b #$00
-	
+	LDX.b #$14
-	LDX.b #$00 ; initalize our ram
-	-
-		STA.l $7EC025, X
-		STA.l $7F5000, X
-		INX
-		CPX.b #$10 : !BLT -
-
-	LDX.b #$10 ; initalize more ram
-	-
-		STA.l $7F5000, X
-		INX
-		CPX.b #$FF : !BLT -
-	
-	LDX.b #$00
 	-
 		LDA.l RomNameSRAM, X : CMP.w $FFC0, X : BNE .clear
-		INX
+		DEX
-		CPX.b #$15 : !BLT -
+	BPL -
+        REP #$30
+	LDX.w #$00D9 ; initalize our ram
+	-
+		STA.l $7EC025, X
+		DEX #2
+	BPL -
+        LDA.w #$0000
+        LDX.w #$2FFE
+        -
+                STA.l $7F5000, X
+                DEX #2
+        BPL -
+
 	BRA .done
 	.clear
-		REP #$30 ; set 16-bit accumulator & index registers
+		REP #$30
 		LDA.w #$0000
+                LDX.w #$1FFE
 		-
-			STA.l $700000, X
+			STA.l CartridgeSRAM, X
-			INX
+			STA.l SaveBackupSRAM, X
-			CPX.w #$2000 : !BLT -
+			DEX #2
-		SEP #$30 ; set 8-bit accumulator & index registers
+		BPL -
-		LDX.b #$00
+                LDA.w RomVersion+$00 : STA.l RomVersionSRAM+$00
+                LDA.w RomVersion+$02 : STA.l RomVersionSRAM+$02
+		SEP #$30
+		LDX.b #$14
 		-
 			LDA.w $FFC0, X : STA.l RomNameSRAM, X
-			INX
+			DEX
-			CPX #$15 : !BLT -
+		BPL -
-                LDX.b #$00
-                -
-                        LDA.w RomVersion, X : STA.l RomVersionSRAM, X
-                        INX
-                        CPX.b #$04 : !BLT -
 	.done
 
 	REP #$20
 	LDA.l OneMindTimerInit : STA.l OneMindTimerRAM
-	SEP #$20
+	SEP #$30
 
 	LDA.b #$01 : STA.w MEMSEL ; enable fastrom access on upper banks
 	STA.l OneMindId
 	
 	LDA.b #$10 : STA.b PlayerSpriteBank ; set default player sprite bank
-	
 	LDA.b #$81 : STA.w NMITIMEN ; thing we wrote over, turn on NMI & gamepad
 RTL
 ;--------------------------------------------------------------------------------