Re: A86: calls: important vars & 24-bit ptr


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Re: A86: calls: important vars & 24-bit ptr




there is also an 'empty' program - a program name with no length.

Stephen Hicks wrote:
> 
> Hmm...  this is interesting.  the ".", "*" and "@" programs have eluded
> us thus far...  Any info on when/why they are used?
> 
> rabidcow@juno.com wrote:
> 
> > i think i've seen this first one mentioned before.
> > $4547   $165E   hl=h*l  (bc=0 de=original l)
> >
> > loading important vars:  (doesn't call findsym)
> > $454B   $166A   load '.' to op1
> > $454F   $166F   load "PRegC" to op1
> > $455B   $1686   load '!' to op1
> > $455F   $168B   load '#' to op1
> > $4563   $1690   load '@' to op1
> > $4567   $1695   load '*' to op1
> > $456B   $169A   load theta to op1
> > $456F   $16A0   load 'r' to op1
> > $4573   $16A5   load 'x' to op1
> >         $16A8   load hl to op1+1
> > $4577   $16AC   load 'y' to op1
> > $457B   $16B1   load 't' to op1
> >
> > 24-bit pointer stuff:
> > $45EF   $174F   _inc_ptr_ade
> > $45F3   $175D   _swap_ahl_bde
> > $45F7   $1764   _load_ade (hl)
> > $45FB   $176A   _load_bde (hl)
> > $45FF   $1770   _load_ahl (hl)
> > $4603   $1779   _store_ade (hl)
> > $4607   $177F   _store_bde (hl)
> >
> > -josh
> >
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> --
> Stephen Hicks
> mailto:shicks@mindspring.com
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