[OpenBIOS] b?branch

[Tarl Neustaedter]

On 2017-Dec-29 02:01 , Jd Lyons wrote:
> “ /pci/@2” open-dev to my-self
>
> Not sure how I can get the value of my-self at the time of the exception?

Well, for a first pass, let's take a look at them before the FCode runs.
After the above line, say

my-self .
my-parent .
my-space .

my-self and my-parent should be similar pointers into the forth
dictionary, where the framework has allocated data for the instances of
the video card node and the pci node (respectively).

my-space should be the high-order bits of the PCI address space,
probably 0x1000 since this is device 2.

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