On Mon, 18 Nov 2019 17:37:00 -0600, Paul Gilmartin wrote:

>On Mon, 18 Nov 2019 20:49:29 +0000, Seymour J Metz wrote:
>>    ...
>>You're losing track of your indirect addresses:
>
>>R1 -> Paramaeter list
>>          +0 -> H'length',C'characters'
>>          +4      Doesn't exist for jobstep.
>>
>And you needf one more indirection.

No, it is there
+0 -> H'length',C'characters'
is shorthand for "+0 contains a pointer to the halfword length, followed 
by the characters that make up the PARM", in the same way that
R1 -> Paramaeter list
is shorthand for "R1 contains a pointer to the parameter list".

-- 
Tom Marchant

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