--- trunk/RELEASE	2007/10/08 16:20:26	28
+++ trunk/RELEASE	2007/10/08 16:20:40	30
@@ -1,4 +1,4 @@
-Release notes for Gavare's eXperimental Emulator (GXemul), 0.4.1
+Release notes for Gavare's eXperimental Emulator (GXemul), 0.4.2
 ================================================================
 
 Copyright (C) 2003-2006  Anders Gavare.
@@ -14,43 +14,32 @@
 systems are probably NetBSD/pmax, NetBSD/cats, and OpenBSD/cats.
 
 
-Changes between release 0.4.0.1 and 0.4.1 include, among other things:
+Changes between release 0.4.1 and 0.4.2 include, among other things:
 
-    o)	Some bugs in the dynamic translation core have been fixed, making
-	all emulation modes (especially the MIPS mode) more stable.
+    o)	The NetWinder emulation mode now works well enough to let
+	NetBSD/netwinder run from a disk image.
 
-    o)	In the refactoring effort between 0.4.0 and 0.4.0.1, single-stepping
-	(and instruction tracing) of 64-bit programs was accidentally broken.
-	Single-stepping in 64-bit mode could result in strange exceptions.
-	This has been fixed in 0.4.1.
+	(NetBSD/netwinder has to be installed manually, though, because
+	there is no installation ramdisk kernel. The GXemul documentation
+	has an example of how to install NetBSD/netwinder using an emulated
+	NetBSD/pmax machine.)
 
-    o)	MIPS emulation performance has been improved somewhat:
+    o)	Algorithmics P5064 emulation works well enough to let NetBSD/algor
+	run from a disk image. (Similar to NetBSD/netwinder, it has to
+	be installed manually, using another emulated machine.)
 
-	R3000: After removing some buggy code (hints for physical page
-	translations), it was possible to remove the workaround for R3000
-	caches which was needed in 0.4.0.1 to make Linux and Ultrix run.
-	This gives an overall speedup for R2000/R3000.
+    o)	PCI configuration register writes can now be handled, which allows
+	NetBSD/Malta (evbmips) 3.0.1 and NetBSD/cobalt 3.0.1 to run from
+	PCI IDE harddisk images. (Previously, only NetBSD 2.1 worked for
+	the Malta and Cobalt emulation modes.)
 
-	For non-R3000, there have been some speedups as well. After fixing
-	reference count bugs for 64-bit addressing in the dyntrans system,
-	workarounds/hacks in the tlbwr/tlbwi instructions and in the ASID
-	change helper function could be removed.
+    o)	Some performance increases:
 
-    o)	A new -s command line option is now available, for dumping
-	raw runtime data/statistics on every instruction to a file.
+	The virtual translation table update routine has been simplified
+	to work the same way for 32-bit and 64-bit emulation, and this
+	apparently results in a speedup for all 64-bit modes.
 
-	Currently, the following kinds of data can be dumped:
-
-	1. the program counter (virtual address)
-	2. the physical address representation of the program counter
-	3. the internal dyntrans instruction call pointer, useful when
-	   developing/optimizing the emulator
-
-	This data can then be analyzed by external tools.
-
-	(There was a -s command line option in previous releases of
-	the emulator, but it did not work as intended, and was not
-	usable from dyntrans emulation modes.)
+	For 32-bit MIPS, some more instruction combinations have been added.
 
 Please read the HISTORY files for more details.