On Wed, 12 Aug 2020 11:15:38 +0200 Martin Truebner <[email protected]>
wrote:
:>Binjamin,
:>your sequence
:> LA 14,0(,14) Fix-up address (in case 24 bit)
:> BSM 14,0 Now BSM 0,14 will restore the current amode
:>Will clear the amode-bit and BSM will set to that mode (0=24) and go
:>there.
I would suggest that you read the POPs.
:>If you are very lucky you are never called in 31 bit mode then the code
:>will not do any harm
:>If you are called in 31 bit mode then you could be lucky and the
:>truncated address is nonsense in 24 bit mode- but ....
You will see the difference between:
BSM 14,0
and
BSM 0,14
i.e.,
what happens to/with R1 and what happens to/with R2.
--
Binyamin Dissen <[email protected]>
http://www.dissensoftware.com
Director, Dissen Software, Bar & Grill - Israel
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