[sebhc] Re-creating actual floppies from archive

Dwight Elvey dwight.elvey at amd.com
Wed Mar 15 16:02:48 CST 2006

Hi Robin
 I don't recall which jumper setup was correct for the
serial but as I recall, things were just what was the
original configuration that the manual had. I believe
the center port is the printer port (on the card)( again, refer
to the H89 manuals ). As I recall, if thing were made correctly,
the cable has the opposite sex on each end ( the most
common type of serial cable ). I don't use any of the
software controlled serial handshake lines. Both the
PC and the H89 do require the hardware handshake lines
to be enabled. This can be done with a local loop back
connection at each end of the cable for the handshake.
This makes it simple because you'll only need three
wires from connector to connector. I believe the
manual describes a local loopback for handshake and
data. You just need to wire the data.
 I do recommend that anyone working with these old machines
get on of the combination jumper, LED status boxes for
the serial cables. Although, I've not tried it, I think
it should work with just 2, 3 and 7 connected from machine
to machine. I foget the lines to jumper locally but
you should be able to figure that.
 It has been a while since I ran this the last time but
I just used a 1:1 cable and chose the LP port because
it was correct from the original setup for the transfers.
 If you have any more problems, let me know and I'll
dig my machine out and verify things.

>From: "Robin England" <robin.england at dial.pipex.com>
>Hello Dwight
>When using your H89TRANS program does the serial cable need the hardware
>handshaking lines connected or will it work with just RX,TX and GND? Sorry
>if this has been answered elsewhere, but upon checking your instructions you
>only mention it having to be a 1:1 cable. Also, please can you explain which
>of the serial ports on the serial card (in a H/Z89) is usually the "LP"
>port - I assume this stands for Line Printer but on my machines this is not
>labelled as such (just two DCE ports and one DTE).
>----- Original Message ----- 
>From: "Dwight Elvey" <dwight.elvey at amd.com>
>To: <sebhc at sebhc.org>
>Sent: Wednesday, March 15, 2006 7:50 PM
>Subject: Re: [sebhc] Re-creating actual floppies from archive
>> Hi Dave
>>  Yes, he could just run the disk cable over. I'd
>> not thought about using the systems drive. A good idea!
>> Dwight
>> >From: "Dave Dunfield" <dave06a at dunfield.com>
>> >
>> >> >For soft-sectored disks, you should be able to use my ImageDisk
>> >> >program. If you have a raw-binary image, you can use the supplied
>> >> >BIN2IMD utility to add format information (which you will have to
>> >> >know and specify), and then the main IMD program to write the
>> >> >image to a physical floppy disk.
>> >>
>> >>  They just need to have a 360K drive on the PC with your tool :)
>> >
>> >As long as you are aware of the difficulties (ie: use a fresh disk),
>> >you can recreate 360k disks quite acceptably on 1.2M HD drives
>> >using IMD.
>> >
>> >Besides, if he has the Heathkit disk system - doesn't he already
>> >have a suitable drive - just has to cable it to the PC long enough to
>> >make the disks...
>> >
>> >Dave
>> >
>> >--
>> >dave06a (at)    Dave Dunfield
>> >dunfield (dot)  Firmware development services & tools: www.dunfield.com
>> >com             Collector of vintage computing equipment:
>> >                http://www.parse.com/~ddunfield/museum/index.html
>> >
>> >--
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>> --
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