[Qemu-devel] [Bug 995758] Re: Possibly inaccurate statement in PC Platform Docs

[Thomas Huth]

As far as I can see, the wording on the page only says that the BIOS
ends at address 0xFFFFF, not that it starts execution at exactly that
address. So I think that page is ok.

** Changed in: qemu
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/995758

Title:
  Possibly inaccurate statement in PC Platform Docs

Status in QEMU:
  Fix Released

Bug description:
  The documentation at:

  http://wiki.qemu.org/Documentation/Platforms/PC

  Contains the statement that the processor, after reset, executes code
  starting from address 0xFFFFF, corresponding to the last byte of the
  single megabyte of memory in the old 8086 address range.

  From my recollection of working in the microcomputer industry in the
  late 1980's, execution actually starts in real mode at the start of
  the last 16 bytes of addressable memory, at 0xFFFF0.  Think about it -
  if it's the last byte there's no room for an address operand to
  accompany a 1-byte opcode.

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