small changes, part 2, rewriting bootloader partially, giving up on this branch

1 files changed, 13 insertions, 16 deletions

diff --git a/doc/design/memory_map.txt b/doc/design/memory_map.txt
index 74ac2d5..fdf9f74 100644
--- a/doc/design/memory_map.txt
+++ b/doc/design/memory_map.txt
@@ -1,20 +1,17 @@
 0x0000 - 0x03ff : interrupt vector table
 0x0400 - 0x04ff : bios data area
-0x0500 - 0x05ff : structure pointers
-  0x00 : fat
-  0x04 : root directory
-  0x08 : kernel
-  0x0c : file handle array
-  0x10 : process array
-0x0600 - 0x1fff : not assigned
-0x2000 - 0x3fff : memory map
-  for each word : 1 page
-    0x0000 = free
-    0x0001 = unavailable
-    0x0002 = kernel
-    other = process number
-0x4000 - 0x6fff : not assigned
+0x0500 - 0x05ff : global info
+  0x00 dword : fat pointer
+  0x04 dword : root directory pointer
+  0x08 word  : usable memory from 0 to 1MiB in kiB
+  0x0a word  : usable memory from 1MiB to 16MiB in kiB
+  0x0c dword : bootloader:
+                 lower word: low memory usage by bootloader in kiB,
+                 upper word: kernel image length in kiB
+               kernel:
+                 file handle array pointer
+  0x10 dword : process array pointer
+  0x14 word  : usable memory from 16MiB up in 64s of kiB
+0x0600 - 0x6fff : not assigned
 
-0x7000 - 0x7bff : bootloader scratch
-  0x7000 : memory map bios buffer
 0x7c00 - 0x7fff : bootloader
\ No newline at end of file