From 98f0ecf59ea5df33f2c73fc311324f32f704c676 Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Wed, 21 Feb 2007 01:14:21 +0000
Subject: Added config for RAM at 0x2000.  Also interface in ZX81 to notice
 config changes.

---
 include/config.h | 1 +
 include/zx81.h   | 4 ++++
 source/config.c  | 7 ++++++-
 source/main.c    | 2 ++
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/include/config.h b/include/config.h
index 82c0c4f..e2d96de 100644
--- a/include/config.h
+++ b/include/config.h
@@ -26,6 +26,7 @@ typedef enum
 {
     DS81_STICKY_SHIFT,
     DS81_AVERAGE_TOUCHSCREEN,
+    DS81_STATIC_RAM_AT_0x2000,
     DS81_NUM_CONFIG_ITEMS
 } DS81_ConfigItem;
 
diff --git a/include/zx81.h b/include/zx81.h
index 4050918..c50c1a4 100644
--- a/include/zx81.h
+++ b/include/zx81.h
@@ -51,6 +51,10 @@ void	ZX81SetTape(const Z80Byte *image, int len);
 */
 void	ZX81Reset(Z80 *z80);
 
+/* Tell the 81 that config may have changed.
+*/
+void	ZX81Reconfigure(void);
+
 /* Displays a string on the ZX81's dislpay.  The screen is cleared and the
    string displayed with \n characters breaking the line.
 
diff --git a/source/config.c b/source/config.c
index b2abec8..433b5d6 100644
--- a/source/config.c
+++ b/source/config.c
@@ -33,7 +33,8 @@ const char *conf_filename = "DS81.CFG";
 const char *conf_entry[DS81_NUM_CONFIG_ITEMS]=
 {
     "sticky_shift",
-    "average_touchscreen"
+    "average_touchscreen",
+    "static_ram_at_0x2000",
 };
 
 
@@ -42,6 +43,7 @@ const char *conf_entry[DS81_NUM_CONFIG_ITEMS]=
 int	DS81_Config[DS81_NUM_CONFIG_ITEMS]=
 {
     TRUE,
+    FALSE,
     FALSE
 };
 
@@ -123,6 +125,9 @@ const char *ConfigDesc(DS81_ConfigItem item)
 	case DS81_AVERAGE_TOUCHSCREEN:
 	    return "AVERAGE TOUCHSCREEN";
 
+	case DS81_STATIC_RAM_AT_0x2000:
+	    return "RAM AT 8192";
+
     	default:
 	    return "UNKNOWN";
     }
diff --git a/source/main.c b/source/main.c
index f2b0e70..cfdf231 100644
--- a/source/main.c
+++ b/source/main.c
@@ -301,6 +301,7 @@ int main(int argc, char *argv[])
     Splash();
 
     LoadConfig();
+    ZX81Reconfigure();
 
     SK_DisplayKeyboard(BG_GFX_SUB);
 
@@ -334,6 +335,7 @@ int main(int argc, char *argv[])
 				GUI_Config();
 				SK_SetSticky(SK_SHIFT,
 					     DS81_Config[DS81_STICKY_SHIFT]);
+				ZX81Reconfigure();
 				break;
 
 			    case MenuMapJoypad:
-- 
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