int 13h and greater

[Hul Tytus]

Joe you ring a bell or two yourself with the mention of Pertec.
A few years ago I wrote the software that joined a Cipher machine
with a Radio Shack Model 2 via an adapter made by a company
in Mass. Tried to sell the combination with limited results.

Hul

Joe Chisolm <jchisolm6@earthlink.net> wrote:

On Sat, 07 Sep 2019 16:32:32 +0000, Hul Tytus wrote:

Several things Joe. First a disk editor on msdos (close to "bare metal")
that need to access > 8gb. Second a bios, or bios style, driver for an
operating system (Minix).

Hul

Joe Chisolm <jchisolm6@earthlink.net> wrote:
On Fri, 06 Sep 2019 20:36:05 +0000, Hul Tytus wrote:

Tim - writing a program on windows whatever is a hassel. Especially
if its a disk editor using the bios. Microsoft frowns on such
programs.

Hul

Tim Williams <tiwill@seventransistorlabs.com> wrote:
"Hul Tytus" <ht@panix.com> wrote in message
news:qku091$8e4$1@reader2.panix.com...
Tim the hp laptop I have doesnt have the "extension" Phoenix
wrote,
but the bios is dated 2013. By the way, Brown lists that
extension. Called, if I remember correctly, IBM/MS extension. 64
bit int. for sectoe #. That extension dates to 98,99,2000.
Writing a driver for the ide disks is doable but i'd like to use
the
USB via 13h. Given a usable 13h extension, I could do a little
editing on a disk editor I have and that would solve a fair chunk
of whats neccessary. Ide may be there and maybe not.
The trivial solution you mention is the objective. But, from
whats
seen so far, it may be hindered by the manufacture's "my
applications" interests.


Can you not just boot into $OS, mount the drive, with all the usual
device drivers, and inspect it that way? Boot a Knoppix CD and poke
at /dev/hda?

My 2010s laptop running WinXP accesses its 500GB SATA drive just
fine.

If your laptop can't do that, it's not worth anything anyway.
Except perhaps as a vintage relic, but then, it's not nearly old
enough to have any value, either.

I suppose I'll have a hard time convincing anyone on /Usenet/ that
they should be pragmatic.

Tim

--
Seven Transistor Labs, LLC Electrical Engineering Consultation and
Design Website: https://www.seventransistorlabs.com/

So what are you trying to write? Some stand-alone bare metal program
or what?


--
Chisolm Texas-American

Wow - Minx - that's a name I have not heard in many years.
Last time I did anything with Minx was maybe '89 or '90 time frame.
I see it's still hanging in there but the hardware requirements
have sure grown in the last 30 years.

Pull the source code for FreeDOS. I think it will handle
drives up to 128GB. See how they are doing it.
In a simple dos environment you can talk directly to the controller
I did a lot of work modifying the driver for a 9-track tape drive
(anyone remember the old IBEX ISA tape controller with the pertec
interface?) You dont have to do command queing or sector sorting
or any of that stuff. Hell, just spin wait for command completion.

If you are trying to write some hacking tool that will work across
a bunch of different mother boards using just INT 13H you will
have limited success.

--
Chisolm
Texas-American