Hi Maarten,
Maarten ter Huurne wrote:
>
> Hi!
>
> I just succesfully transmitted a few bytes across the joystick network
> cable. As promised, the sources are in this mail.
Great. This is very promising.
> Final bug was removed just 15 minutes ago, so don't expect optimized code
> ;)
I have the time to wait for a beter version ;-)
> There is still a weak point in the protocol I used. It can cause trouble if
> you send one transfer quickly after another and interrupts are enabled
> inbetween. I'll fix it soon. But if you just want to send one byte manually
> (for example to check your cable) or you don't mind to keep interrupts
> disabled the whole time, this source works perfectly.
> The problem lies in the fact that not just the triggers are fixed to '1' by
> the BIOS interrupt routine, but also the strobe is fixed to '0'. Since the
> strobe is used for the ACK signal, a strobe going to '0' because of the
> BIOS can be mistaken for the first ACK of a new transfer. I will fix the
> protocol by adding an extra step that will ensure ACK is '0' at the end of
> a transfer.
Seems to me you already have this problem fixed (but not jet
implemented).
> Bye,
> Maarten
>
> ;-------------------------------------------------------------------
> <SNIP>
This whole thing sounds very promising Maarten, but I do have a few
questions:
(1) Could you give us the connection scheme for your solution.
(2) (As you are the first to program something) Do you have a
suggestion as to which connectors to use (we *should* try to make it a
standard).
(3) Could you make a manual or add MUCH more comment to your program.
(4) Will there be any "useful" programs ;-), meaning a program to
transfer files between two MSXs.
And for all you people out there:
Is there anyone who could make this driver into a device (such as a
com port), in this way you could access it from MSX DOS.
I still have a few more questions and in due time I will ask them. For
now that's it from me.
Regards,
Jeroen Smael
FutureDisk
Homepage: http://www.futuredisk.msxnet.org/
For all members: FD#37 should reach you THIS week (they will be posted
today == Monday)
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