Changeset 39611 in vbox for trunk/src/VBox/Devices/PC/BIOS-new

Timestamp:

Dec 14, 2011 2:15:46 PM (13 years ago)

Author:

vboxsync

Message:

Added notes.

File:

• trunk/src/VBox/Devices/PC/BIOS-new/notes.txt (modified) (2 diffs)

trunk/src/VBox/Devices/PC/BIOS-new/notes.txt

@@ -6 +6 @@
   operating systems require INT 15h to detect installed memory.
 
-- OS/2 (WSeB/MCP/ACP) appears to be one of the very few operating systems
-  which use the El Torito floppy emulation.
+- OS/2 (WSeB/MCP/ACP) and Windows 98 SE are some of the very few operating
+  systems which use the El Torito floppy emulation.
 
 - MS-DOS 6.2/V is a rare user of the INT 15h keyboard intercept routines.
@@ -37 +37 @@
   and clear the memory. For those, the FDPT must be in the BIOS ROM area, or
   the OS will destroy it (even when it's at 0:300 in the IVT).
+
+- Windows 98 SE boot CD uses 32-bit registers in real mode and will fail in
+  mysterious ways if BIOS trashes high bits of EAX (and likely others).