LGPL'd VGABIOS updated from SVN.

- Bochs VBE: enable 32k bank granularity mode.
- Fixed general 'scroll down' bug in graphics modes.
- Code optimizations: some VBE and VGA functions rewritten in assembler.

bochs/CHANGES

@@ -77,8 +77,9 @@ Changes after 2.6.11:
 - VGABIOS
   - LGPL'd VGABIOS updated from SVN.
     - Added initial version of the VGABIOS for Voodoo Banshee adapters.
-    - Added 'write character' support for Cirrus 8-bpp modes using bitblt engine.
-    - Fixed text output in VGA graphics modes.
+    - Added 'write character' support for Cirrus 8-bpp modes using bitblt engine
+      and for Banshee 8-bpp modes.
+    - Fixed text output and scrolling in VGA graphics modes.
     - Some small fixes in the VBE code and several code optimizations.
 
 - Misc

bochs/bios/VGABIOS-lgpl-README

@@ -92,12 +92,14 @@ For any information on Qemu, visit the website http://wiki.qemu.org/
 
 History
 -------
-vgabios-SVN : Apr 30 2021
+vgabios-SVN : May 24 2021
   - Volker
     - added initial version of the VGABIOS for Voodoo Banshee PCI
     - added 'write character' support for Cirrus 8-bpp modes using bitblt engine
+      and for Banshee 8-bpp modes
     - fixes in Bochs VBE functions set/get VBE mode and save/restore VBE state
     - fixed text output in VGA graphics modes (using INT 0x43 vector as expected)
+    - fixed general 'scroll down' bug in graphics modes
     - some functions rewritten in assembler and some other code optimizations
 vgabios-0.7b : Jan 03 2020
   - Volker