From eaf248fe87191e24828bfc79d2688d79073ce806 Mon Sep 17 00:00:00 2001
From: Aleksandar Andrejevic <aandrejevic@reactos.org>
Date: Mon, 11 Nov 2013 17:59:04 +0000
Subject: [PATCH] [NTVDM] Implement CMOS registers 15h, 16h, 17h and 18h.

svn path=/branches/ntvdm/; revision=60946
---
 subsystems/ntvdm/cmos.c | 13 +++++++++++++
 subsystems/ntvdm/cmos.h |  5 ++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/subsystems/ntvdm/cmos.c b/subsystems/ntvdm/cmos.c
index 8b1bbceac28..4b8a7f0d2a4 100644
--- a/subsystems/ntvdm/cmos.c
+++ b/subsystems/ntvdm/cmos.c
@@ -11,6 +11,7 @@
 #define NDEBUG
 
 #include "cmos.h"
+#include "bios.h"
 #include "pic.h"
 
 /* PRIVATE VARIABLES **********************************************************/
@@ -135,6 +136,18 @@ BYTE CmosReadData(VOID)
             return Value;
         }
 
+        case CMOS_REG_BASE_MEMORY_LOW:
+            return Bda->MemorySize & 0xFF;
+
+        case CMOS_REG_BASE_MEMORY_HIGH:
+            return Bda->MemorySize >> 8;
+
+        case CMOS_REG_EXT_MEMORY_LOW:
+            return ((MAX_ADDRESS - 0x100000) / 1024) & 0xFF;
+
+        case CMOS_REG_EXT_MEMORY_HIGH:
+            return ((MAX_ADDRESS - 0x100000) / 1024) >> 8;
+
         case CMOS_REG_STATUS_A:
         case CMOS_REG_STATUS_B:
         case CMOS_REG_STATUS_D:
diff --git a/subsystems/ntvdm/cmos.h b/subsystems/ntvdm/cmos.h
index 807e4e32cee..0e8d5f0c388 100644
--- a/subsystems/ntvdm/cmos.h
+++ b/subsystems/ntvdm/cmos.h
@@ -67,10 +67,13 @@ typedef enum _CMOS_REGISTERS
     CMOS_REG_STATUS_D,
     CMOS_REG_DIAGNOSTICS,
     CMOS_REG_SHUTDOWN_STATUS,
+    CMOS_REG_BASE_MEMORY_LOW = 0x15,
+    CMOS_REG_BASE_MEMORY_HIGH = 0x16,
+    CMOS_REG_EXT_MEMORY_LOW = 0x17,
+    CMOS_REG_EXT_MEMORY_HIGH = 0x18,
     CMOS_REG_MAX = 0x40
 } CMOS_REGISTERS, *PCMOS_REGISTERS;
 
-
 /*
  * CMOS Memory Map
  *
-- 
2.17.1