[A83] Re: rst disassembling

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: rst disassembling
From: "The one and only SUCKER ..." <sucker_pvn@hotmail.com>
Date: Sat, 25 Aug 2001 07:39:55 +0000
Reply-To: assembly-83@lists.ticalc.org


So whenever I need to do something and it is inside the rst's
I better just rst that area of code the, there is allways
a ret.

   SUCKER

>It isn't useless. TI put very small routines in there. The most common one 
>is _ldHLind at 0033h.
>
>
> > ----------------------------------------
> > From: The one and only SUCKER ... <sucker_pvn@hotmail.com>
> > Sent: Fri Aug 24 19:51:20 GMT+02:00 2001
> > To: <assembly-83@lists.ticalc.org>
> > Subject: [A83] rst disassembling
> >
> >
> >
> > By disassembling from 00 to 60h I came up to this.
> > But... with every rst they use jp instead of call, so the code
> > afterwards in the same label isn't executed and is useless,
> > isn't it????
> >
> >    SUCKER
> >
> > ;-----> RST Routines
> > ; These are the routines associated with the instructions rst 00h to rst 
>38h
> > ; rst	00h - Restart
> > ; rst	08h - call _op1toop2
> > ; rst	10h - call _findSym (non-program/list)
> > ; rst	18h - call _pushop1
> > ; rst	20h - call _hltoop1 (copy 9 bytes from (hl) to op1)
> > ; rst	28h - call _fpmult
> > ; rst	30h - call _fpadd
> > ; rst	38h - call the standard interrupt routine
> >
> >
> > rst 00h:
> >      jp   0017Dh
> >      rst  38h
> >      rst  38h
> >      rst  38h
> >      rst  38h
> >      rst  38h
> > rst 08h:
> >      jp   019E4h
> >      bit  0, (iy+07h)
> >      ret
> > rst 10h:
> >      jp   0224Ch
> >      bit  4, (iy+02h)
> >      ret
> > rst 18h:
> >      jp   029BEh
> >      set  0, (iy+03h)
> >      ret
> > rst 20h:
> >      jp   01AB6h
> >      ld   a, (0913Ch)
> >      or   a
> >      ret
> > rst 28h:
> >      jp   009C2h
> >      sub  a
> >      ld   (0913Ch), a
> >      ret
> > rst 30h:
> >      jp   008D5h
> >      ld   a, (hl)
> >      inc  hl
> >      ld   h, (hl)
> >      ld   l, a
> >      ret
> > rst 38h:
> >      ex   af, af'
> >      exx
> >      in   a, (03h)
> >      bit  2, a
> >      jp   nz, 00B1h
> >      rra
> >      jr   c, Label2
> >      rra
> >      jr   c, Label3
> >      jr   Label4
> >      out  (03h), a
> >
> > Label4:
> >      ld   a, 0Bh
> >      bit  0, (iy+16h)
> >      jr   z, Label5
> >      add  a, 04h
> >
> > Label5:
> >      out  (03h), a
> >      ex   af, af'
> >      exx
> >      ei
> >      reti
> >      bit  1, (iy+03h)
> >      (and so on...)
> >
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> >
>
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[A83] Re: rst disassembling

From: Peter-Martijn Kuipers <hyper@hysoft-automation.com>