From 6260a5271ccac01f19f9cc6c6a0ac8452f83362a Mon Sep 17 00:00:00 2001
From: Mike Pavone <pavone@retrodev.com>
Date: Sun, 30 Dec 2012 00:11:03 -0800
Subject: Make version register return correct value for USA

---
 blastem.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'blastem.c')

diff --git a/blastem.c b/blastem.c
index 4f3ae6d..b5453b4 100644
--- a/blastem.c
+++ b/blastem.c
@@ -359,6 +359,12 @@ m68k_context * io_write_w(uint32_t location, m68k_context * context, uint16_t va
 	return context;
 }
 
+#define USA 0x80
+#define JAP 0x00
+#define EUR 0xC0
+#define NO_DISK 0x20
+uint8_t version_reg = NO_DISK | USA;
+
 m68k_context * io_read(uint32_t location, m68k_context * context)
 {
 	if (location < 0x100) {
@@ -367,7 +373,7 @@ m68k_context * io_read(uint32_t location, m68k_context * context)
 		case 0x0:
 			//version bits should be 0 for now since we're not emulating TMSS
 			//Not sure about the other bits
-			context->value = 0;
+			context->value = version_reg;
 			break;
 		case 0x1:
 			io_data_read(&gamepad_1, context);
-- 
cgit v1.2.3