From bf47a41ecc1286b8e61900f50599d05b8adcd50c Mon Sep 17 00:00:00 2001
From: Kelvin Sherlock <ksherlock@gmail.com>
Date: Tue, 19 Feb 2013 18:28:29 -0500
Subject: [PATCH] MoveHHi

---
 toolbox/mm.cpp      | 23 +++++++++++++++++++++++
 toolbox/mm.h        |  3 +++
 toolbox/toolbox.cpp |  4 ++++
 3 files changed, 30 insertions(+)

diff --git a/toolbox/mm.cpp b/toolbox/mm.cpp
index 4a515f0..e64c444 100644
--- a/toolbox/mm.cpp
+++ b/toolbox/mm.cpp
@@ -201,6 +201,29 @@ namespace MM
 		 return 0x0f0000;
 	}
 
+	uint16_t MoveHHi(uint16_t trap)
+	{
+		/* 
+		 * on entry:
+		 * A0: Handle to move
+		 *
+		 * on exit:
+		 * D0: Result code.
+		 *
+		 */
+
+		uint32_t theHandle = cpuGetAReg(0);
+
+		 Log("%04x MoveHHi(%08x)\n", trap, theHandle);
+
+		// check if it's valid.
+
+		auto iter = HandleMap.find(theHandle);
+		if (iter == HandleMap.end()) return SetMemError(memWZErr);
+
+		return SetMemError(0);
+	}
+
 
 
 	#pragma mark Pointers
diff --git a/toolbox/mm.h b/toolbox/mm.h
index 6024ad0..b29177c 100644
--- a/toolbox/mm.h
+++ b/toolbox/mm.h
@@ -45,6 +45,9 @@ namespace MM
 
 	uint16_t HLock(uint16_t trap);
 	uint16_t HUnlock(uint16_t trap);
+
+	uint16_t MoveHHi(uint16_t trap);
+
 }
 
 
diff --git a/toolbox/toolbox.cpp b/toolbox/toolbox.cpp
index 3f635d5..f7b7397 100644
--- a/toolbox/toolbox.cpp
+++ b/toolbox/toolbox.cpp
@@ -84,6 +84,10 @@ namespace ToolBox {
 				d0 = MM::CompactMem(trap);
 				break;
 
+			// MoveHHi (h: Handle);
+			case 0xa064:
+				d0 = MM::MoveHHi(trap);
+				break;
 
 			// ReadDateTime (VAR sees: LONGINT) : OSErr;
 			case 0xa039: