Problems using struct pack/unpack in files, and reading them.

[Ian Kelly]

On Fri, Nov 13, 2015 at 12:20 PM, kent nyberg <kent at z-sverige.nu> wrote:
> def LoadCommandAndReact(place_to_read):
>     global RegisterAX
>
>     tmp = place_to_read.read()[RegisterAX:calcsize('HH')]

It looks like you're trying to get a slice of length 4 here, starting
at the value of RegisterAX. What you're actually getting is a slice
starting at the value of RegisterAX and ending at 4. You probably want
this instead:

    tmp = place_to_read.read()[RegisterAX:RegisterAX + calcsize('HH')]