Re: purpose of Z-ADD?

["Raul A. Jager W." <raul@xxxxxxxxxx>]

I belive, in system/34:   A   ADD B    C
tranlated to 2 instructions in machine code.  A "Z_ADD" and an "ADD"
so, Z_ADD served to move a numeric field with one machin OP.

Bob P. Roche wrote:
> I'm not sure I'd call it a "legacy leftover" but yes Z-ADD existed before 
> EVAL was ever and opcode.
>
>
>
> From:
> Luke Gerhardt <lgerhardt@xxxxxxxxx>
> To:
> rpg400-l@xxxxxxxxxxxx
> Date:
> 03/24/2011 08:18 AM
> Subject:
> Re: purpose of Z-ADD? (was: Question about legacy coding style)
> Sent by:
> rpg400-l-bounces@xxxxxxxxxxxx
>
>
>
> Since it was mentioned here and tickled a neuron...I might as well ask: 
> I've always wondered, what is the purpose of Z-ADD?  Isn't it just the 
> same to EVAL = 0, or EVAL = whatever you really want it to be?  Or is 
> this just a legacy leftover that only still exists in order to mess with 
> my mind?
>
> Thanks!  :)