Re: [kminternals] Softwareprotocol KH930 to/from FB100
- --- hollimaus <Holger.Schefczik@...> wrote:
>Yes, there is a PDF in the Files section that covers
> Hi John,
> do you exactly know the
> software-handshaking-protocol between the KM
> an the fb100?
> I have connected my KM with the fb100. With this/myThat's two commands. The first is a File-Mode escape
> I have also the posibility to read (monitor) the
> transmit and
> receive data.
> If I start the code 550 on KM (format) the following
> Hex-Code will
> be send to the FB100:
> 5A 5A 08 00 F7 0D 46 35 0D
to get into FDC-Emulation mode. The next 4 bytes is
the first FDC-Emulation mode command.
> Then the FB100 will send the following code back asIf it's different from what I uploaded, please add it
> a response to
> the KM:
> 43 31 30 30 30 30 30 30
> At the end of the formatting the FB100 will send:
> 30 30 34 46 30 34 30 30
> If I compare these codes with the 'normal' codes for
> the fb100/pdd1,
> I couldn't find them. So I was searching in the
> internet for a
> service manual for the diskdrive. I've found it :-)
to the file section.
> In this book is written, that this code is calledYes. The KM's talk to the disk drive in FDC-Emulation
mode exclusively. The file-mode is only used on
certain Tandy and TRS-80 laptops.
> A posibility to write directly the data in theNeither difficult nor dangerous. It's just the way it
> sectors of the disk.
> I think this is difficult and dangerous!?.
works. I have some GForth code that does it but I want
to rewrite it in C.
> But if I will connect the KM directly to my pc, IYes.
> must know and
> practice this protocol. Are my reflections correct?
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