[Coco] MAMOU bug?

[Steve Bjork]

The pshu s is legal.

This command assembles to $36 $40.

What is illegal are pshu u or pshs s since the same bit (B6) in the post 
byte is used to flag the same register.  (S/U)
(If pushing on the System Stack, then push the User Stack.)

My games used the U register to point to the game object and was pushing 
and pulling all the the time.  Yes, my games were written in assemble 
but in a type of object oriented design.

Steve

On 1/23/2013 5:43 PM, Gene Heskett wrote:
> On Wednesday 23 January 2013 20:35:12 Willi Kusche did opine:
> Message additions Copyright Wednesday 23 January 2013 by Gene Heskett
>
>> Hi!
>>
>>      I get an error when I try to assemble " pshu s".  The error is
>> "illegal register name".
>>
>> Willi
>>
> Its legal code Willi, but maybe its trying to tell you to aim a little
> farther forward than your toes, cause I can't think of a better way to take
> careful aim and make the machine crash.   Regs.u and regs.s, unless you are
> a master programmer, doing 100% of your own housekeeping, are pretty much
> only for the OS's use, not the programmer.
>
>> --
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>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco
>
> Cheers, Gene