Hi there,
No, No, NO! This will (for me) not do. In order to make this thing
really "plug 'n play", one connector side should be male and one
connector side should be female. In this way even 'newbies' could plug
in easily to this new network.
To me it doesn't matter which connector(s) is/are used. The tulp plugs
suggested by Alex Wulms seem (at least to me) the best choice. Why:
(1) they are easy to come by (three colors should be no problem as the
standard color for CVBS is yellow and most shops also sell black
ones).
(2) both male and female connectors can be soldered to a wire (some
connectors are 'PCB only' on the male or female side).
(3) no mix-up can be made with other MSX wires (the token ring network
wires have a male connector on one side and a female connector on the
other side).
(4) every signal wire also has it's ground, which would lead to less
errors (if I have my data communication theory right ;-) ).
To come to a conclusion to this all, my suggestion would be:
Joystick connector (DB9 female) to send and receive:
1: I DR0 -> RECV (white tulp female)
2: I DR1 -> RECV (red tulp female)
3: I ACK -> SEND (yellow tulp male)
6: O DR0 -> SEND (white tulp male)
7: O DR1 -> SEND (red tulp male)
8: O ACK -> RECV (yellow tulp female)
9: GND -> SEND/RECV (ground for all tulps)
The network cable(s) needed will have three tulp male connectors on
one side and three tulp female connectors on the other side.
Everybody who wants to connect to this network needs only one joystick
connector and one network cable.
Greetz,
Jeroen Smael
FutureDisk
Homepage: http://www.futuredisk.msxnet.org/
Patrick 'Patsie' Lina wrote:
> Hi all!
>
> I still say we stick with DB9 connectors but to be more flexible, here's a
> new suggestion: Why not 'split up' the joystickport i.e. redirect pin
> 1,2,8,9 to one DB9-male and 3,6,7,9 to another.
>
> DB9 Female-Male: (Joystick to send and receive)
> 1: I DR0 -> RECV (male1)
> 2: I DR1 -> RECV (male1)
> 3: I ACK -> SEND (male2)
> 6: O DR0 -> SEND (male2)
> 7: O DR1 -> SEND (male2)
> 8: O ACK -> RECV (male1)
> 9: GND -> SEND/RECV (both)
>
> DB9 Male1: (RECV)
> 1: I DR0
> 2: I DR1
> 8: O ACK
> 9: GND
>
> DB9 Male2: (SEND)
> 3: I ACK
> 6: O DR0
> 7: O DR1
> 9: GND
>
> <<SNIP>>
>
> I'll see if I can create one of these this weekend
>
> Happy plug-n-playing! :-)
>
> Greetz,
> Patsie
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