From d7140543c55b463aaed14a6f4f0662644cdb3360 Mon Sep 17 00:00:00 2001
From: Arisotura <thetotalworm@gmail.com>
Date: Fri, 23 Apr 2021 22:30:53 +0200
Subject: [PATCH] fix unlaunch 'battery low' error

settings still don't survive a reset for some reason
---
 src/DSi_I2C.cpp | 7 ++++---
 src/DSi_SD.cpp  | 8 ++++++++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/DSi_I2C.cpp b/src/DSi_I2C.cpp
index 16ec1a8a..ad01a42c 100644
--- a/src/DSi_I2C.cpp
+++ b/src/DSi_I2C.cpp
@@ -79,14 +79,15 @@ void Start()
 
 u8 Read(bool last)
 {
+    //printf("BPTWL: read %02X -> %02X @ %08X\n", CurPos, Registers[CurPos], NDS::GetPC(1));
+    u8 ret = Registers[CurPos++];
+
     if (last)
     {
         CurPos = -1;
-        return 0;
     }
 
-    //printf("BPTWL: read %02X -> %02X\n", CurPos, Registers[CurPos]);
-    return Registers[CurPos++];
+    return ret;
 }
 
 void Write(u8 val, bool last)
diff --git a/src/DSi_SD.cpp b/src/DSi_SD.cpp
index aba477d4..c5ccc730 100644
--- a/src/DSi_SD.cpp
+++ b/src/DSi_SD.cpp
@@ -464,6 +464,10 @@ u16 DSi_SDHost::Read(u32 addr)
     case 0x102: return 0;
     case 0x104: return BlockLen32;
     case 0x108: return BlockCount32;
+
+    // dunno
+    case 0x106: return 0;
+    case 0x10A: return 0;
     }
 
     printf("unknown %s read %08X @ %08X\n", SD_DESC, addr, NDS::GetPC(1));
@@ -626,6 +630,10 @@ void DSi_SDHost::Write(u32 addr, u16 val)
     case 0x102: return;
     case 0x104: BlockLen32 = val & 0x03FF; return;
     case 0x108: BlockCount32 = val; return;
+
+    // dunno
+    case 0x106: return;
+    case 0x10A: return;
     }
 
     printf("unknown %s write %08X %04X\n", SD_DESC, addr, val);