Data is not there after check 


> On Mar 19, 2021, at 3:57 PM, Paul Gilmartin 
> <[email protected]> wrote:
> 
> On Fri, 19 Mar 2021 12:43:38 -0700, Ed Jaffe wrote:
> 
>>> On 3/19/2021 12:35 PM, Joseph Reichman wrote:
>>> So this is what I will do
>>> 
>>> I’ll do 3 reads in the first since i need to get myself going I’ll issue the
>>> WAIT using the ECB from the DECB
>>> Than when I finish processing that buffer and need to go to the second I/O 
>>> I’ll issue a WAIT for that
>>> etc
>> 
>> Don't forget to issue CHECK after WAIT.
>> 
> Is there any reason to do a WAIT before the CHECK?  I never did.
> 
> There's little reason to use BSAM.  The consensus in this thread
> has been, QSAM is at least nearly as good as BSAM; perhaps
> better because it knows the best way to deal with current
> devices, when to WAIT, etc.  And has far less coding effort.
> 
> GET LOCATE might save a few instructions/record vis-a-vis
> GET MOVE.
> 
> -- gil
> 
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