This repository has been archived on 2020-12-06. You can view files and clone it, but cannot push or open issues or pull requests.

H. Peter Anvin b7882065f5 [a20] Send a null command to the KBC after changing A20 ... Send a null command, specifically "pulse outputs" with no outputs selected, to the KBC after changing A20. This was apparently done by DOS, presumably as a synchronization hack, and the authors of the UHCI spec thought it was inherent. Therefore, there are systems out there (e.g. HP DL360 G5) which will stop responsing to "legacy USB" unless they see the null command, 0xFF, written to port 0x64 at the end of the A20 toggling sequence. Signed-off-by: H. Peter Anvin <hpa@zytor.com>		2008-06-27 22:29:13 +01:00
..
basemem.c	Provide {get,set}_fbms() in basemem.h.	2007-01-13 23:57:31 +00:00
bios_console.c	Warnings purge: src/arch/i386, src/core/disk.c, ramdisk, autoboot	2007-07-03 16:02:15 -04:00
e820mangler.S	Ensure that empty e820 regions are skipped even at the end of the	2007-10-10 20:13:34 +01:00
gateA20.c	[a20] Send a null command to the KBC after changing A20	2008-06-27 22:29:13 +01:00
hidemem.c	Fix typo	2007-07-04 02:25:07 +01:00
memmap.c	Added more verbose memory-map debugging.	2007-09-21 18:33:17 +01:00
pnpbios.c	Added PnP BIOS scanning code, separated out from the UNDI driver	2007-01-05 16:10:03 +00:00
smbios_settings.c	[Settings] Expose SMBIOS via settings API	2008-03-28 15:35:06 +00:00
smbios.c	[smbios] Fix SMBIOS string fetching	2008-06-11 13:43:58 +01:00