From 84fdeb116f8b180257e6d53244911c0b639f376a Mon Sep 17 00:00:00 2001
From: Kelvin Sherlock <ksherlock@gmail.com>
Date: Thu, 18 Dec 2014 14:40:03 -0500
Subject: [PATCH] TempFreeMem

---
 toolbox/mm.cpp      | 14 ++++++++++++--
 toolbox/mm.h        |  1 +
 toolbox/toolbox.cpp |  3 +++
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/toolbox/mm.cpp b/toolbox/mm.cpp
index ba86594..1c56b37 100644
--- a/toolbox/mm.cpp
+++ b/toolbox/mm.cpp
@@ -1504,9 +1504,19 @@ namespace MM
 		if (address) memoryWriteLong(0, address);
 
 		ToolReturn<4>(sp, mplite_maxmem(&pool));
-		SetMemError(0); // not sure if this is correct.  oh well.
 
-		return 0;
+		return SetMemError(0);
 	}
 
+	uint16_t TempFreeMem(void)
+	{
+
+		// FUNCTION TempFreeMem: LongInt;
+
+		Log("     TempFreeMem()\n");
+
+		ToolReturn<4>(-1, mplite_freemem(&pool));
+
+		return SetMemError(0);
+	}
 }
diff --git a/toolbox/mm.h b/toolbox/mm.h
index e15a728..4984b65 100644
--- a/toolbox/mm.h
+++ b/toolbox/mm.h
@@ -88,6 +88,7 @@ namespace MM
 	// OS Dispatch
 
 	uint16_t TempMaxMem(void);
+	uint16_t TempFreeMem(void);
 }
 
 
diff --git a/toolbox/toolbox.cpp b/toolbox/toolbox.cpp
index 51bc531..44bbde0 100644
--- a/toolbox/toolbox.cpp
+++ b/toolbox/toolbox.cpp
@@ -65,6 +65,9 @@ namespace ToolBox {
 			case 0x0015:
 				return MM::TempMaxMem();
 
+			case 0x0018:
+				return MM::TempFreeMem();
+
 			default:
 				fprintf(stderr, "OSDispatch: selector %04x not implemented\n", 
 					selector);