Jeroen Smael wrote:
>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).
The DB9 connectors as just as easy to come by, bought some today. (Gld.3,-)
>(2) both male and female connectors can be soldered to a wire (some
>connectors are 'PCB only' on the male or female side).
My DB9's have this pretty little hole I can stick the wire into and put
a drop of anything on it (even chewing gum will hold ;-) )
>(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).
Isn't there always a male on one side and a female on the other? Where
can there be made mix-ups?!
>(4) every signal wire also has it's ground, which would lead to less
>errors (if I have my data communication theory right ;-) ).
Since they all connect to the same ground, this is not true.
>The network cable(s) needed will have three tulp male connectors on
>one side and three tulp female connectors on the other side.
You forgot the DB9 to stick into your MSX. That's 7 connectors in all,
giving a lot of distortion (connectors are one of the the primary sources
of signal errors)
But after reading my own *brilliant* schematics once again, I got an even
more teriffic idea! ;-)
DB9: Female1 (Stick in MSX)
1: I DR0 -> RECV (male)
2: I DR1 -> RECV (male)
3: I ACK -> SEND (fem2)
6: O DR0 -> SEND (fem2)
7: O DR1 -> SEND (fem2)
8: O ACK -> RECV (male)
9: GND -> GND (both)
DB9: male (RECV, near MSX) connect pin 1,2,8 and 9
DB9: fem2 (SEND, long cable) connect pin 3,6,7 and 9
A single cable would look like this:
MSX SEND
____ long cable ____
\f1/-+--------------\f2/
_|__
\m_/
RECV
In a more complete schematic:
MSXA SEND RECV MSXB
____ ____ ____ ____
\f1/-+------------------------\f2/ \m_/-+-\f1/
_|__ |
\m_/RECV |
____ |
\f2/SEND |
| _|__
| SEND\f2/
| ____
| RECV\m_/
____ | ____ ____ | ____
\f1/-+-\m_/ \f2/------------------------+-\f1/
MSXD RECV SEND MSXC
This way every MSX only needs just one cable with
2 female and 1 male DB9 connectors
It's a lot like my first idea, except for a lot
less connectors :-)
Greetz,
Patsie
This is a(n) RFC :-)
****
MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED] and put
in the body (not subject) "unsubscribe msx [EMAIL PROTECTED]" (without the
quotes :-) Problems? contact [EMAIL PROTECTED] (www.stack.nl/~wiebe/mailinglist/)
****
