[sebhc] Improvements to the image transfer program

[Mark Garlanger]

Hi Dwight,

   Have you documented the protocol that you use between the PC and H89? 
What kind of language is .SEQ? I googled it, and found "Sequential 
Instruction File ", but couldn't find any information on that.

I would like to write something for Linux that would handle this. I could 
reboot into DOS, but what is the fun in that ;-)

            Thanks,
              Mark

----- Original Message ----- 
From: "Dwight K. Elvey" <dwight.elvey at amd.com>
To: <sebhc at sebhc.org>
Sent: Tuesday, July 27, 2004 12:27 PM
Subject: Re: [sebhc] Improvements to the image transfer program


> Hi All
> I've sent in the latest image transfer code.
> It is now H89LDR9.ZIP. The bootstrap code has
> changed so that if you are using an older version,
> you'll need to reenter the bootstrap code
> from the monitor and after loading the main loader,
> save it to your standalone floppy. The older
> version will not work with the new one because
> of an added command.
> I've also include a command at the PC to change
> the baud rate for those that only have the
> H8-5 to communicate through. The baud rate on the
> H8's H8-5 is jumper selected so you'll need to
> change the jumper to match the rate selected
> on the PC side. This is to account for the fact
> that may H8-5's do not work reliably at 9600
> baud. The PC side can be set to 9600, 4800, 2400
> or 1200. One of these will surely work.
> This command should not be used with the H89 or
> H8 with H8-4. There is no easy way for both sides
> to know what the baud rate is. The baud rate on
> the H89 and H8-4 is set by software instead of
> hardware. Both of these setups use rs232 level
> drivers that should have no issues at 9600 Baud,
> anyway.
> This code does have the added feature that it can
> determine the volume number that is actually in
> the sector headers of the disk. This is useful for
> non-HDOS disk. Some require one to set the override
> to match. For these disk, it is always a good idea
> to save information as to what the volume number
> of the disk is, if it is a non-HDOS. There are
> 256 possible volume numbers. It would be a pain
> to have to try them all when restoring the image
> to a disk.
> Dwight
>
>
> --
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