From a4d173bea90f40955663ad42727f8137431532a4 Mon Sep 17 00:00:00 2001
From: Denis Molony <dmolony@iinet.net.au>
Date: Fri, 22 Nov 2019 15:42:07 +1000
Subject: [PATCH] doco

---
 README.md                                     |  3 +-
 .../diskbrowser/applefile/HiResImage.java     | 28 +++++++++++++++++--
 .../applefile/SHRPictureFile2.java            |  5 ++--
 3 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 62594a4..25e09f1 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@
 - CPM disks
 - Comprehensive disk listing
 - woz format disks
+- UniDos disks
 
 ### Documentation
 * [Usage](resources/usage.md)
@@ -25,7 +26,7 @@
 * Install the **latest** version of the [Java Runtime Environment](http://www.oracle.com/technetwork/java/javase/downloads/index.html) (JRE or JDK).
 * Download DiskBrowser.jar from the [releases](https://github.com/dmolony/diskbrowser/releases) page.
 * Double-click the jar file, or enter 'java -jar DiskBrowser.jar' in the terminal.
-* Set your root folder (where you keep your disk images).
+* Set your root folder (the top-level folder where you keep your disk images).
 
 ### Example Screens
 #### Disk listing
diff --git a/src/com/bytezone/diskbrowser/applefile/HiResImage.java b/src/com/bytezone/diskbrowser/applefile/HiResImage.java
index d879fbd..cb28e1d 100644
--- a/src/com/bytezone/diskbrowser/applefile/HiResImage.java
+++ b/src/com/bytezone/diskbrowser/applefile/HiResImage.java
@@ -56,8 +56,9 @@ public abstract class HiResImage extends AbstractFile
   // * $C1 PIC   $0000  IIGS Super Hi-Res Image                 SHRPictureFile2
   //   $C1 PIC   $0001  IIGS QuickDraw II PICT File             SHRPictureFile2 *
   // * $C1 PIC   $0002  Super Hi-Res 3200 (Brooks)              SHRPictureFile2 .3200
-  //   $C1 PIC   $2000  ?
-  //   $C1 PIC   $4950  ?
+  //   $C1 PIC   $2000  = $C1/0000
+  //   $C1 PIC   $4100  = $C1/0000
+  //   $C1 PIC   $4950  = $C1/0000
   //   $C1 PIC   $8001  Allison raw image
   //   $C1 PIC   $8002  Thunderscan
   //   $C1 PIC   $8003  DreamGraphix
@@ -66,6 +67,29 @@ public abstract class HiResImage extends AbstractFile
   //   $C3 PAL          Paintworks palette
   //  ---- ---- ------  --------------------------------------  ------------------------
 
+  // packed      unpacked
+  // $06.3200                  1
+  // $06.3201                  .
+  // $C0 0000                  1
+  // $C0 0001    $C1 0000      .     1
+  // $C0 0002                  1
+  // $C0 0003    $C1 0001      .     .
+  // $C0 0004    $C1 0002      .     1
+  // $C0 1000                  .
+  // $C0 8000                  .
+  // $C0 8001                  .
+  // $C0 8005                  .
+  // $C0 8006                  .
+  // $C1 2000                  .
+  // $C1 4100                  1
+  // $C1 4950                  .
+  // $C1 8001                  .
+  // $C1 8002                  .
+  // $C1 8003                  .
+
+  // 1 Graphics & Animation.2mg
+  //
+
   static PaletteFactory paletteFactory = new PaletteFactory ();
 
   static final byte[] pngHeader =
diff --git a/src/com/bytezone/diskbrowser/applefile/SHRPictureFile2.java b/src/com/bytezone/diskbrowser/applefile/SHRPictureFile2.java
index 95800f5..62096f4 100644
--- a/src/com/bytezone/diskbrowser/applefile/SHRPictureFile2.java
+++ b/src/com/bytezone/diskbrowser/applefile/SHRPictureFile2.java
@@ -159,12 +159,13 @@ public class SHRPictureFile2 extends HiResImage
         // 00000 - 31999  pixel data 32,000 bytes
         // 32000 - 38399  200 color tables of 32 bytes each (one color table per scan line)
 
-        if (buffer.length < 38400)
+        if (buffer.length < 38400 && false)
         {
           failureReason = "Buffer should be 38,400 bytes";
           return;
         }
-        colorTables = new ColorTable[200];
+        int maxTables = (buffer.length - 3200) / 32;
+        colorTables = new ColorTable[maxTables];
         for (int i = 0; i < colorTables.length; i++)
         {
           colorTables[i] = new ColorTable (i, buffer, 32000 + i * 32);