init mmc1 before autodetect

Author: zohassadar

src/reset.asm

@@ -37,9 +37,24 @@ reset:  cld
         jsr changeCHRBanks
         jmp initRam
 
+.macro setMMC1PRG
+        RESET_MMC1
+        lda #$00
+        sta MMC1_PRG
+        lsr a
+        sta MMC1_PRG
+        lsr a
+        sta MMC1_PRG
+        lsr a
+        sta MMC1_PRG
+        lsr a
+        sta MMC1_PRG
+.endmacro
+
 mapperInit:
 ; autodetect
 .if INES_MAPPER = 0
+        setMMC1PRG ; initialize mmc1 just in case
         jsr testVerticalMirroring
         bne not_mmc1 ; cnrom should bail here
         jsr testHorizontalMirroring ; Test again in case of cnrom miswire
@@ -49,17 +64,7 @@ not_mmc1:
 
 ; MMC1
 .elseif INES_MAPPER = 1
-        RESET_MMC1
-        lda #$00
-        sta MMC1_PRG
-        lsr a
-        sta MMC1_PRG
-        lsr a
-        sta MMC1_PRG
-        lsr a
-        sta MMC1_PRG
-        lsr a
-        sta MMC1_PRG
+        setMMC1PRG
 
 ; CNROM (no init)
 .elseif INES_MAPPER = 3