[Coco] Reading/Writing Model I/III/4 Disks on a CoCo

[Gene Heskett]

On Thursday 05 September 2013 15:15:36 Luis Antoniosi (CoCoDemus) did 
opine:

> btw, my /D0 is set to 80 tracks and the floppy in questions was
> previously formatted to 40.
> 
That dos not explain the error, but one should always start with a disk 
formatted to the target capacity.  And when changing from  478 tpi to 96 
tpi, the disk should be bulk erased to clean up the areas in between the 
tracks.
 
> On Thu, Sep 5, 2013 at 2:57 PM, Luis Antoniosi (CoCoDemus) <
> 
> retrocanada76 at gmail.com> wrote:
> > Gene I tried this:
> > 
> > OPEN #in,"image.dsk":READ
> > OPEN #out,"/D0@":WRITE
> > FOR t=34 TO 0 STEP -1
> > FOR s=17 TO 0 STEP -1
> > SEEK #in,(t*18)*256.
> > GET #in,sector
> > SEEK #out,(t*18)*256.
> > PUT #out,sector
> > NEXT s
> > NEXT t
> > CLOSE #in
> > CLOSE #out
> > 
> > It gives me error when T is higher than 34!
> > 
> > Why does it copy backwards ? Because I want to write the LSN0 at last.
> > Maybe the problem is the SEEK and not the GET/PUT. I didn't go
> > further, I made an asm routine and solved my problem.
> > 
> > On Thu, Sep 5, 2013 at 2:43 PM, Gene Heskett <gheskett at wdtv.com> wrote:
> >> On Thursday 05 September 2013 14:41:47 Luis Antoniosi (CoCoDemus) did
> >> 
> >> opine:
> >> > B09 won't support double sided.
> >> 
> >> Huh?  B09 only runs on os9.  And supports whatever the device
> >> descriptor says.
> >> 
> >> > Also write to LSN0 at the end. Skip the first sector from both
> >> > image and floppy, write all sectors and then reopen both image and
> >> > floppy and then write to LSN0.
> >> > 
> >> > Don't use seek, just read and ignore as the seek seems to not work
> >> > properly with non os-9 disks.
> >> > 
> >> > I have made a rawcopy tool for that, is at home I can send it you.
> >> > it is in asm so it supports double sided disks as well. I made a
> >> > dragon32 superdos disk using it.
> >> > 
> >> > On Thu, Sep 5, 2013 at 10:24 AM, Al Hartman
> >> 
> >> <alhartman6 at optonline.net>wrote:
> >> > > Did it work? Have you successfully written an image?
> >> > > 
> >> > > - Al -
> >> > > 
> >> > > -----Original Message----- From: Gene Heskett
> >> > > 
> >> > > Sure there is, it took me about an hour to knock it out in B09.
> >> > > Write LSN0, close the path, then reopen, and write the whole
> >> > > thing one sector at a time.  The dbl write of lsn0 is to get rid
> >> > > of the disk changed error.
> >> > > 
> >> > > --
> >> > > Coco mailing list
> >> > > Coco at maltedmedia.com
> >> > > http://five.pairlist.net/**mailman/listinfo/coco<http://five.pair
> >> > > list
> >> 
> >> .
> >> 
> >> > > net/mailman/listinfo/coco>
> >> 
> >> Cheers, Gene
> >> --
> >> 
> >> "There are four boxes to be used in defense of liberty:
> >>  soap, ballot, jury, and ammo. Please use in that order."
> >> 
> >> -Ed Howdershelt (Author)
> >> My web page: <http://gene.homelinux.net:6309/gene> should be up!
> >> 
> >> I tried the clone syscall on me, but it didn't work.
> >> 
> >>                 -- Mike Neuffer trying to fix a serious time problem
> >> 
> >> A pen in the hand of this president is far more
> >> dangerous than 200 million guns in the hands of
> >> 
> >>          law-abiding citizens.
> >> 
> >> --
> >> Coco mailing list
> >> Coco at maltedmedia.com
> >> http://five.pairlist.net/mailman/listinfo/coco
> > 
> > --
> > Long live the CoCo


Cheers, Gene
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page: <http://gene.homelinux.net:6309/gene> should be up!

I never loved another person the way I loved myself.
		-- Mae West
A pen in the hand of this president is far more
dangerous than 200 million guns in the hands of
         law-abiding citizens.