moving twain test to 0x8000

twain/README

@@ -379,3 +379,6 @@ and the machine code generated.  We also got to play with the caches
 and mmu in a simplified fashion.
 
 (yes this is too wordy and I need to proof/rewrite)
+based on new discoveries, changed the start address to 0x8000 for the
+whole thing so that messes with cache lines and results have some
+differences to the numbers above (for reasons described above).

twain/memmap

@@ -1,7 +1,7 @@
 
 MEMORY
 {
-    ram : ORIGIN = 0x00000000, LENGTH = 0x100000
+    ram : ORIGIN = 0x8000, LENGTH = 0x30000-0x8000
 }
 
 SECTIONS

twain/vectors.s

@@ -1,30 +1,13 @@
 
 .globl _start
 _start:
-    b reset
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
-    b hang
 
-reset:
 
 ;@ add/remove nops here
     nop
     nop
     nop
-
-
+;@ add/remove nops here
 
     mov sp,#0x00200000
     bl notmain