Jung-uk Kim 824d100ff7 MFC: r205297, r205347, r205452, r205455, r205649, r205650
Sync. x86bios with HEAD.

- Detect illegal access to unmapped memory within real mode emulator.
- Map EBDA if available and support memory wraparound above 1MB as VM86 does.
- Set initial %ds to 0x40 as X.org int10 handler does.
- Print the initial memory map when bootverbose is set.
- Optimize real mode page table lookup.
- Add strictly aligned memory access for distant future.
- Update copyright date.
2010-03-31 15:32:36 +00:00
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