Re: A86: detecting running program
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Re: A86: detecting running program
Oh. I didn't understand the first time; I though _opbase was a value
that would be present in _ops. I'll try that.
Cassady Roop
Joshua J Seagoe wrote:
>
> try [_ops]==[_opbase], not [_ops]==_opbase.
> both should be $3fff if there's nothing on the op stack
> ie:
> ld hl,[_ops]
> ld de,[_opbase]
> or a
> sbc hl,de
> jr z,op_stack_empty
>
> -josh
>
> On Thu, 11 Nov 1999 20:03:46 -0800 Cassady Roop <croop@oregontrail.net>
> writes:
> >
> >It didn't work. Even at the homescreen, _ops did not contain
> >_opbase.
> >
> >Rats.
> >
> >Cassady Roop
> >
> >Joshua J Seagoe wrote:
> >>
> >> there may not be such a flag. maybe you could check the position
> >of
> >> _ops. if it's at _opbase (i think), there definitely aren't any
> >programs
> >> running. running either an asm or basic program will push something
> >onto
> >> the op stack.
> >>
> >> -josh
> >>
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