Egan Ford

Hello all,

I am trying to create a dumb-down one-way version of ADT, but I am
getting strange (but consistent) results. If I create a diskette from
an image (computer -> //e disk), and then use ADT to read that
diskette to create a new image (//e disk -> computer), the images are
identical, yet my diskette will not boot. If I use ADT to create an
image, then it does boot. Both the booting disk and the non-booting
disk when ripped by ADT have the same md5sums (I also did a bit for
bit check).

Stumped.

I am using RWTS to format as well as write out the data. My guess is
that the format is somehow not correctly skewing the disk. Dunno.
Ideas?

Thanks.

David Schmidt

On 1/3/2012 4:18 PM, Egan Ford wrote:
> I am trying to create a dumb-down one-way version of ADT [...]

Funny, that's how Rich Williamson's SENDDISK (forerunner of ADT) started
out. Asimov has that in /pub/apple_II/utility/senddisk.zip. The source
is pretty short - Rich says he wrote it in the monitor. How very
Woz-esque of him. His code is II to

> Both the booting disk and the non-booting
> disk when ripped by ADT have the same md5sums (I also did a bit for
> bit check).

But what does the disk look like while it's in the //e? Take a look
with a sector editor. Is your one-way code taking into account that
sectors come down the wire in reverse order (from F down to 0) from a
typical ADT server?

What if you start with a normally formatted disk, skip your RWTS format,
and send the disk? Would that boot?

Have you started with the INIT code from the Beneath Apple DOS book
(page A-12)?

Egan Ford

On Jan 3, 2:54*pm, David Schmidt <schmi...@my-deja.com> wrote:
> On 1/3/2012 4:18 PM, Egan Ford wrote:
> Rich says he wrote it in the monitor. *How very
> Woz-esque of him.

Yeah, I cannot do that. I cannot code without vi and make. Cross-
compiling--how un-Woz of me.

> What if you start with a normally formatted disk, skip your RWTS format,
> and send the disk? *Would that boot?

Yep it does. And the reverse does not boot. I.e. format with RWTS,
then load up code with ADT.

> Have you started with the INIT code from the Beneath Apple DOS book
> (page A-12)?

Yeah, looked at it. Although not optimal, I've settled on using the
"file manager" init. The only overhead is that it writes out DOS at
the end. But I can live with that and that code is working for me.
Moving forward.

Thanks again, this really helped.

BTW, thanks for the F-0 tip. I can write tracks about 4x faster now.

P.S. RE: my ADT issues with block 273. It is hardware. I can
duplicate with my own code. Funny it happens on two different
machines, but more frequently on one than an other. I need more
drives.

Antoine Vignau

My question is: what is the value of $B7EB? ie. when you format a disk
with your code, which disk volume do you have in your IOB?

Antoine

Egan Ford

On Jan 3, 11:17*pm, Antoine Vignau <antoine.vig...@laposte.net> wrote:
> My question is: what is the value of $B7EB? ie. when you format a disk
> with your code, which disk volume do you have in your IOB?
>
> Antoine

$00.