So it would come down to starting  at ASXBFTCB and looking at each TCB dispatch 
ability 

Thanks 




> On May 14, 2021, at 9:40 AM, Tom Harper <[email protected]> wrote:
> 
> There can be many. There really is no way to know precisely at a given 
> instance because you could scan the TCBs in an address space and check their 
> dispatch flags, but that could change from under you at any instant. 
> 
> Tom Harper
> 
> Sent from my iPhone
> 
>> On May 14, 2021, at 9:21 AM, Joseph Reichman <[email protected]> wrote:
>> 
>> Hi
>> 
>> Was just wondering is there any way to know in a  address space what TCB is 
>> currently executing 
>> Would it be ASXBFTCB ? 
>> 
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