Updated documentation.

2 files changed, 30 insertions, 6 deletions

diff --git a/CHANGES b/CHANGES
index 94c7134..9a0170f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -22,9 +22,15 @@ Changes from V1.1a to V1.2
 	CVS repository.
     +	Compiled with newer version of libfat so that the DLDI interfaces can
     	be used (thanks Chism!)  At last I can load ZX81 programs into my own
-	damned emulator!  Also moved to R20 of the toolchain and the new libnds.
+	damned emulator!  Moved to R20 of the toolchain and the new libnds.
     +	Added support for text mode underlayed with a rotation screen for bitmap
     	purposes.
     +	Added code to ZX81 emulation to notice changes to I register and search
     	for hires display files.  Works for a lot of hires games, though needs
 	proper display emulation for Manic Miner, so that won't work :-(
+    +	Improved speed of hi-res code.
+    +	Fixed attempted load in ZX81SNAP -- the FAT libs seem to want UNIX style
+    	directory seperators.
+    +	Added file selector with LOAD "*"
+    +	Handling of 1K display files is a bit better.
+    +	Added option for RAM in place of ROM mirror.
diff --git a/instructions.txt b/instructions.txt
index a929069..b7d96ef 100644
--- a/instructions.txt
+++ b/instructions.txt
@@ -143,6 +143,11 @@
     If you are using the version of DS81 that allows the use of FAT devices,
     and you device is supported, they you can load any old tape.
 
+    FAT support is via the new DLDI interface, so you may need to dynamically
+    link in the appropriate FAT driver.  Details are available here:
+
+        http://chishm.drunkencoders.com/DLDI/index.html
+
     Simply place the .P file (ZX81 games are usually distributed as .P files
     that are simply an image of the memory that would have been dumped to tape)
     and either put it in the root directory of the FAT device or in a directory
@@ -163,9 +168,15 @@
     too clever - unfortunately, like Manic Miner where it switches between
     high and low-resolution in the same frame.
 
-    I know the Software Farms games seem to work (though "Forty Niner"
-    sometimes goes mad on the 2nd level).  Steven McDonald's games seem to
-    cause no-problem.
+    I know the Software Farms games seem to work, though "Forty Niner"
+    sometimes goes mad (just incrementing the score ) though that's probably
+    a general emulation bug.  Of course unless it did that anyway -- I've never
+    played it before.
+    
+    Steven McDonald's games seem to cause no-problem so far.
+
+    If a game doesn't look right it may also be worth enabling the 'RAM AT 8192'
+    option.
 
     If you know of a game that seems to cause it real trouble, please let me
     know -- the high-resolution support is still a bit of a hack whereby the
@@ -187,13 +198,20 @@
 
         This option can be enabled if your touch-screen seems to suffer from
         jumps (mine seems to once in a while) and causes the soft keyboard to
-        only register touchscreen presses if they are withing 5 pixels of each
-        other over two frames.  Your milage my vary, but for me it stops the
+        only register touchscreen presses if they are within 5 pixels of each
+        other over two frames.  Your mileage my vary, but for me it stops the
         menu randomly appearing.
 
         This means that response can be reduced by a frame, but it shouldn't
         cause problems.
 
+    RAM AT 8192
+
+        One hardware fix that could be made to the ZX81 was to replace the
+        mirror of the ROM that started at 8192 with RAM.  This allowed
+        true high resolution graphics.
+        
+        Not that I've found any that work yet :-)
 
 -------------------------------------------------------------------------------
 $Id$