diff --git a/subsystems/ntvdm/bios/bios32/kbdbios32.c b/subsystems/ntvdm/bios/bios32/kbdbios32.c
index 4f551618750..1ba2b374057 100644
--- a/subsystems/ntvdm/bios/bios32/kbdbios32.c
+++ b/subsystems/ntvdm/bios/bios32/kbdbios32.c
@@ -81,7 +81,7 @@ static BOOLEAN BiosKbdBufferPop(VOID)
     return TRUE;
 }
 
-WORD BiosPeekCharacter(VOID)
+static WORD BiosPeekCharacter(VOID)
 {
     WORD CharacterData = 0;
 
diff --git a/subsystems/ntvdm/bios/bios32/kbdbios32.h b/subsystems/ntvdm/bios/bios32/kbdbios32.h
index 46590d84635..8e9fdfde3a9 100644
--- a/subsystems/ntvdm/bios/bios32/kbdbios32.h
+++ b/subsystems/ntvdm/bios/bios32/kbdbios32.h
@@ -38,7 +38,6 @@
 
 /* FUNCTIONS ******************************************************************/
 
-WORD BiosPeekCharacter(VOID);
 WORD BiosGetCharacter(VOID);
 
 BOOLEAN KbdBios32Initialize(HANDLE ConsoleInput);
diff --git a/subsystems/ntvdm/bios/bios32/vidbios32.c b/subsystems/ntvdm/bios/bios32/vidbios32.c
index e84814507f1..acb1480078c 100644
--- a/subsystems/ntvdm/bios/bios32/vidbios32.c
+++ b/subsystems/ntvdm/bios/bios32/vidbios32.c
@@ -1045,7 +1045,7 @@ static BOOLEAN VidBiosSetVideoPage(BYTE PageNumber)
     return TRUE;
 }
 
-VOID VidBiosPrintCharacter(CHAR Character, BYTE Attribute, BYTE Page)
+static VOID VidBiosPrintCharacter(CHAR Character, BYTE Attribute, BYTE Page)
 {
     WORD CharData = MAKEWORD(Character, Attribute);
     BYTE Row, Column;
diff --git a/subsystems/ntvdm/bios/bios32/vidbios32.h b/subsystems/ntvdm/bios/bios32/vidbios32.h
index 23fee947557..3610133bf30 100644
--- a/subsystems/ntvdm/bios/bios32/vidbios32.h
+++ b/subsystems/ntvdm/bios/bios32/vidbios32.h
@@ -36,8 +36,6 @@ enum
 
 /* FUNCTIONS ******************************************************************/
 
-VOID VidBiosPrintCharacter(CHAR Character, BYTE Attribute, BYTE Page);
-
 BOOLEAN VidBios32Initialize(HANDLE BiosConsoleOutput);
 VOID VidBios32Cleanup(VOID);
 
diff --git a/subsystems/ntvdm/dos/dos32krnl/bios.c b/subsystems/ntvdm/dos/dos32krnl/bios.c
index d3cc39257e5..b7ce9d313e5 100644
--- a/subsystems/ntvdm/dos/dos32krnl/bios.c
+++ b/subsystems/ntvdm/dos/dos32krnl/bios.c
@@ -93,8 +93,18 @@ BOOLEAN DosCheckInput(VOID)
 
     if (IsConsoleHandle(Handle))
     {
+        /* Save AX */
+        USHORT AX = getAX();
+
         /* Call the BIOS */
-        return (BiosPeekCharacter() != 0xFFFF);
+        setAH(0x01); // or 0x11 for enhanced, but what to choose?
+        Int32Call(&DosContext, BIOS_KBD_INTERRUPT);
+
+        /* Restore AX */
+        setAX(AX);
+
+        /* Return keyboard status */
+        return (getZF() == 0);
     }
     else
     {
diff --git a/subsystems/ntvdm/dos/dos32krnl/dos.c b/subsystems/ntvdm/dos/dos32krnl/dos.c
index c86594db4e3..a9d10a012da 100644
--- a/subsystems/ntvdm/dos/dos32krnl/dos.c
+++ b/subsystems/ntvdm/dos/dos32krnl/dos.c
@@ -809,8 +809,23 @@ WORD DosWriteFile(WORD FileHandle, LPVOID Buffer, WORD Count, LPWORD BytesWritte
     {
         for (i = 0; i < Count; i++)
         {
-            /* Call the BIOS to print the character */
-            VidBiosPrintCharacter(((LPBYTE)Buffer)[i], DOS_CHAR_ATTRIBUTE, Bda->VideoPage);
+            /* Save AX and BX */
+            USHORT AX = getAX();
+            USHORT BX = getBX();
+
+            /* Set the parameters */
+            setAL(((PCHAR)Buffer)[i]);
+            setBL(DOS_CHAR_ATTRIBUTE);
+            setBH(Bda->VideoPage);
+
+            /* Call the BIOS INT 10h, AH=0Eh "Teletype Output" */
+            setAH(0x0E);
+            Int32Call(&DosContext, BIOS_VIDEO_INTERRUPT);
+
+            /* Restore AX and BX */
+            setBX(BX);
+            setAX(AX);
+
             BytesWritten32++;
         }
     }
@@ -2513,14 +2528,17 @@ VOID WINAPI DosFastConOut(LPWORD Stack)
     USHORT AX = getAX();
     USHORT BX = getBX();
 
+    /* Set the parameters (AL = character, already set) */
     setBL(DOS_CHAR_ATTRIBUTE);
     setBH(Bda->VideoPage);
+
+    /* Call the BIOS INT 10h, AH=0Eh "Teletype Output" */
     setAH(0x0E);
-    Int32Call(&DosContext, 0x10);
+    Int32Call(&DosContext, BIOS_VIDEO_INTERRUPT);
 
     /* Restore AX and BX */
-    setAX(AX);
     setBX(BX);
+    setAX(AX);
 #endif
 }