On Mon, 7 May 2018 08:29:23 -0500, Tom Marchant <[email protected]> 
wrote:

>>Oh - I'm also assuming that IBM will update
>>the operating system so that READ etc can
>>be executed in AM64.
>
>ROFL! You didn't ask for that.

I didn't ask for it yet because the first step is to
just have RM32 memory available. If I can at
least have RM32 memory I can still switch to
AM31 prior to executing READ.

> I think that you are assuming that is is trivial.

Yes, all I want them to do for READ is to test
the current AMODE, and if it is 64, to do a
BSM to AM31, and run the rest of READ as
AM31 and then restore AM64 on return.
Maybe 10 lines of code that disadvantages
no-one.

> Are you also assuming that they will accept an
> address above the bar for parameters?

No, I am expecting all data to have been
allocated with RM24 or RM31 as currently
documented by READ etc. I have no interest
in putting OS-related data above the 2 GiB
bar, and I have limited interest in putting the
load module above the 2 GiB bar. I'm only
interested in putting *application data*
above the 2 GiB bar.

BFN. Paul.

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