[Coco] CORRECTION: Re: Exec address of disk loaded ml program?

John T Chasteen johnchasteen.2 at juno.com
Wed Apr 11 10:21:24 EDT 2007 

Thanks for the "Plug" . This will make playing with the three coco's more
interesting.
I'm starting back setting up the 6309 and 6809 machines which I put away
in 1985
after I got an IBM notebook and an AT&T hi res 8086 PC. Who says you
can't have fun at
when you are almost 79 yrs old.

I want to thank all the people that has been helping me with my technical
problems.

There are so many web sites to check out.  I found Mike k's music 

This is the first snow on the ground that i've had to drive on in about 4
years.

Mary's E magazine has some very interesting info and a great picture of
Bob

Thanks again for all the help.

John Chasteen (or JC ) 


  
On Wed, 11 Apr 2007 21:48:48 +1000 "Bob Devries" <devries.bob at gmail.com>
writes:
> Fedor, I think you mis-understand.
> 
> The load address and the exec address are written as part of the 
> file in a 
> bibary file, and the load address and each line's length is stored 
> as part 
> of each Basic file also. Only the data type files don't have this 
> information, but the length of any file can be calculated from 
> directory and 
> granule table information.
> 
> *shameless plug* : Please make sure you get the next two CocoNutz 
> newsletters, 'cos I have done a tutorial about the disk directory 
> structure 
> in those.
> 
> --
> Regards, Bob Devries, Dalby, Queensland, Australia
> 
> Isaiah 50:4 The sovereign Lord has given me
> the capacity to be his spokesman,
> so that I know how to help the weary.
> 
> website: http://www.home.gil.com.au/~bdevasl
> my blog: http://bdevries.invigorated.org/
> 
> ----- Original Message ----- 
> From: "Fedor Steeman" <petrander at gmail.com>
> To: "CoCoList for Color Computer Enthusiasts" 
> <coco at maltedmedia.com>
> Sent: Wednesday, April 11, 2007 9:40 PM
> Subject: Re: [Coco] CORRECTION: Re: Exec address of disk loaded ml 
> program?
> 
> 
> > Can that information otherwise be found on the disk itself? I mean 
> how 
> > does
> > DISK BASIC find out where to put it in memory on loading if it is 
> not
> > written somewhere in the file?
> >
> > Cheers,
> > Fedor
> >
> >
> > On 11/04/07, theother_bob <theother_bob at yahoo.com> wrote:
> >>
> >> As I recall, after LOADMing a program from Disk, you could PEEK 
> to find
> >> the Start and EXEC addresses and the length. I don't have the 
> info handy 
> >> at
> >> the moment, but that was how I did it back in the day. You just 
> add the
> >> length to the start address to get the end address.
> >>
> >> Bob
> >>
> >> ----- Original Message ----
> >> From: Arthur Flexser <flexser at fiu.edu>
> >> To: CoCoList for Color Computer Enthusiasts 
> <coco at maltedmedia.com>
> >> Sent: Wednesday, April 11, 2007 1:09:15 AM
> >> Subject: Re: [Coco] CORRECTION: Re: Exec address of disk loaded 
> ml
> >> program?
> >>
> >>
> >> Carl's program seems to be for finding the exec address, which 
> CAN be
> >> found,
> >> much more easily, by peeking as you stated.  It is only the start 
> and end
> >> addresses that require opening the file for random access.
> >>
> >> Art
> >>
> >> On Wed, 11 Apr 2007, Bob Devries wrote:
> >>
> >> > Thanks, Art.
> >> >
> >> > You're quite right of course. I'd overlooked that it was for 
> Disk based
> >> > programmes. Indeed, Carl England's answer was better, but 
> requires a
> >> basic
> >> > programme to find it.
> >> >
> >> > --
> >> > Regards, Bob Devries, Dalby, Queensland, Australia
> >> >
> >> > Isaiah 50:4 The sovereign Lord has given me
> >> > the capacity to be his spokesman,
> >> > so that I know how to help the weary.
> >> >
> >> > website: http://www.home.gil.com.au/~bdevasl
> >> > my blog: http://bdevries.invigorated.org/
> >> >
> >> > ----- Original Message -----
> >> > From: "Arthur Flexser" <flexser at fiu.edu>
> >> > To: "CoCoList for Color Computer Enthusiasts" 
> <coco at maltedmedia.com>
> >> > Sent: Wednesday, April 11, 2007 12:16 PM
> >> > Subject: Re: [Coco] CORRECTION: Re: Exec address of disk loaded 
> ml
> >> program?
> >> >
> >> >
> >> > >I think the correction needs a correction:  This works only 
> for
> >> cassette
> >> > > files.  The start and end address for disk files, contiguous 
> or not,
> >> > > cannot be
> >> > > found by simple peeking.  (It is possible to do it by opening 
> the 
> >> > > file
> >> for
> >> > > random access and getting the relevant bytes that way.)
> >> > >
> >> > > Art
> >> > >
> >> > >
> >> > > On Wed, 11 Apr 2007, Bob Devries wrote:
> >> > >
> >> > >> Correction:
> >> > >> I reversed the START and END addresses, sorry.
> >> > >>
> >> > >> START=PEEK(487)*256+PEEK(488)
> >> > >> END=PEEK(126)*256+PEEK(127)-1
> >> > >> EXEC=PEEK(157)*256+PEEK(158)
> >> > >>
> >> > >> Sorry for the error
> >> > >>
> >> > >>
> >> > >> > The start and end addresses of a contiguous BINARY disk 
> file can 
> >> > >> > be
> >> > >> > found
> >> > >> > in a similar way, by PEEKing values:
> >> > >> >
> >> > >> > START=PEEK(126)*256+PEEK(127)
> >> > >> > END=PEEK(487)*256+PEEK(488)-1
> >> > >> > EXEC=PEEK(157)*256+PEEK(158)
> >> > >> >
> >> > >> > Hope it helps.
> >> > >> >
> >> > >> > --
> >> > >> > Regards, Bob Devries, Dalby, Queensland, Australia
> >> > >> >
> >> > >> > Isaiah 50:4 The sovereign Lord has given me
> >> > >> > the capacity to be his spokesman,
> >> > >> > so that I know how to help the weary.
> >> > >> >
> >> > >> > website: http://www.home.gil.com.au/~bdevasl
> >> > >> > my blog: http://bdevries.invigorated.org/
> >> > >> >
> >> > >> > ----- Original Message -----
> >> > >> > From: "Fedor Steeman" <petrander at gmail.com>
> >> > >> > To: "CoCoList for Color Computer Enthusiasts" 
> >> > >> > <coco at maltedmedia.com
> >> >
> >> > >> > Sent: Wednesday, April 11, 2007 5:09 AM
> >> > >> > Subject: Re: [Coco] Exec address of disk loaded ml 
> program?
> >> > >> >
> >> > >> >
> >> > >> >> Right, thanks! So at least that is the same as on a 
> cassette-only
> >> > >> >> system...
> >> > >> >> But I guess on a disk system, there is no easy way of 
> figuring 
> >> > >> >> out
> >> the
> >> > >> >> start
> >> > >> >> and end addresses? Unless you use a hex editor to look at 
> the
> >> virtual
> >> > >> >> disk?
> >> > >> >>
> >> > >> >> Cheers,
> >> > >> >> Fedor
> >> > >> >>
> >> > >> >> On 10/04/07, L. Curtis Boyle <curtisboyle at sasktel.net> 
> wrote:
> >> > >> >>>
> >> > >> >>> On Tue, 10 Apr 2007 10:01:00 -0600, Fedor Steeman
> >> > >> >>> <petrander at gmail.com>
> >> > >> >>> wrote:
> >> > >> >>>
> >> > >> >>> > Hi all,
> >> > >> >>> >
> >> > >> >>> > Probably a dumb question, but in Disk Basic how to 
> retrieve 
> >> > >> >>> > the
> >> > >> >>> > execute
> >> > >> >>> > address of a ml program loaded from floppy?
> >> > >> >>> >
> >> > >> >>> > I mean, if EXEC can figure out where to find the 
> address, so
> >> can
> >> > >> >>> > I...
> >> > >> >>> >
> >> > >> >>> > Thanks,
> >> > >> >>> > Fedor
> >> > >> >>> >
> >> > >> >>>
> >> > >> >>> You can look at the 2 last 2 bytes of the .BIN file, or, 
> after
> >> > >> >>> LOADMing
> >> > >> >>> it, you can do:
> >> > >> >>> ?PEEK(157)*256+PEEK(158)
> >> > >> >>>
> >> > >> >>> This works with cassette files (that don't autostart) as 
> well.
> >> > >> >>>
> >> > >> >>>
> >> > >> >>> --
> >> > >> >>> L. Curtis Boyle
> >> > >> >>>
> >> > >> >>> --
> >> > >> >>> Coco mailing list
> >> > >> >>> Coco at maltedmedia.com
> >> > >> >>> http://five.pairlist.net/mailman/listinfo/coco
> >> > >> >>>
> >> > >> >>
> >> > >> >> --
> >> > >> >> Coco mailing list
> >> > >> >> Coco at maltedmedia.com
> >> > >> >> http://five.pairlist.net/mailman/listinfo/coco
> >> > >> >
> >> > >>
> >> > >>
> >> > >> --
> >> > >> Coco mailing list
> >> > >> Coco at maltedmedia.com
> >> > >> http://five.pairlist.net/mailman/listinfo/coco
> >> > >>
> >> > >
> >> > >
> >> > > --
> >> > > Coco mailing list
> >> > > Coco at maltedmedia.com
> >> > > http://five.pairlist.net/mailman/listinfo/coco
> >> >
> >> >
> >> > --
> >> > Coco mailing list
> >> > Coco at maltedmedia.com
> >> > http://five.pairlist.net/mailman/listinfo/coco
> >> >
> >>
> >>
> >> --
> >> Coco mailing list
> >> Coco at maltedmedia.com
> >> http://five.pairlist.net/mailman/listinfo/coco
> >>
> >>
> >>
> >>
> >> 
>
_________________________________________________________________________
___________
> >> Food fight? Enjoy some healthy debate
> >> in the Yahoo! Answers Food & Drink Q&A.
> >> http://answers.yahoo.com/dir/?link=list&sid=396545367
> >>
> >> --
> >> Coco mailing list
> >> Coco at maltedmedia.com
> >> http://five.pairlist.net/mailman/listinfo/coco
> >>
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco 
> 
> 
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
> 
>

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