On Tue, 4 Feb 2014 13:08:25 -0600, Andy Wood <[email protected]> wrote:

. . .
>
>However to answer your specific question: The remainder, after dividing by 8, 
>and which has been placed in BIT, is a number in the range 0 to 7. The TR 
>converts 0 to X'80', 1 to X'40', 2 to X'20' etc, for use as the "mask" in the 
>TM.
>

Ok, so I was mislead by the comments.  The X'80', X'40' etc is used in the XI, 
there being no TM instruction.

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