Re: Prodos external command oddness

["Laine Houghton" <laine@@@intergate.com>]

Try to crash it into the monitor and read  $BE50 / 51.
I don't have Big U to see what you're seeing.


"Michael Spangler" <mspangler@gemsi.com> wrote in message
1a410081.0401282022.491e7c74@posting.google.com">news:1a410081.0401282022.491e7c74@posting.google.com...
> I've been playing with the external copy command on the Beagle
> Brother's Big U disk. It works fin on Prodos 1.1.1. It does not work
> fine on 1.9 or 2.0.3. Further experimenting shows that it depends on
> some behavior in Basic system 1.1. So if I load basic system 1.1 on a
> prodos 2.0.3 kernel, then no problems.
>
> The exact breakage on Basic system 1.5 (goes with 2.0.3) is that it
> just plain hangs, after correctly doing the copy. With basic system
> 1.4.1 (goes with 1.9) it seems to work Ok, But if you type another
> prodos command right away ( ie. do the copy, then cat), it generates a
> syntax error.
> But if you use an applesoft command first, like List, then do a cat,
> it works again. The copied file  is fine, by the way. The problem is
> at the end of the command, getting back to Basic.
>
> I dumped the Copy code, and there are no illegal calls to inside
> Basic.system, (Unlike several other of the add-on commands on that
> disk.) There is a mildly illegal call to FC20 in the monitor, just
> before vtab. There are lots of calls, reads, and writes to the global
> page (BExx), but that is supposed to be OK.
>
> So does anyone out there have an idea what might have changed to break
> the hand-off back to basic? It might have been some change relating to
> the addition of appletalk support in Basic System 1.2, but I don't
> have a copy of that handy to see if it works. I didn't see any mention
> of something helpful in the technotes either.
>
> On a related subject. When the Beagles went out of business, did they
> post the last revisions of their Beagle Oldies that went freeware
> somewhere?  I'm still looking for the prodos version of Doubletake.
> Everyone sends in the dos 3.3 version, and the prodos verison is
> probably on the flip side, like it was for Extra-K. It should be
> version 2.1, or newer, if there is one.
>
> Anyway, I need that copy command to work so my applesoft program can
> copy a file from the ram disk to a floppy under program control.  So
> If I can't figure this out, I'll have to give up the bug fixes in the
> newer versions of Prodos and go back to 1.1.
>
> Thanks;
>
> Mike S.
> in gloomy Soap Lake WA,
> (Hey, it's January, what did you expect at 47 N latitude)