Jeroen Smael wrote:
>Alex Wulms wrote:
>>] This way every MSX only needs just one cable with
>>] 2 female and 1 male DB9 connectors
>>This however is very dangerous. Since there are two female
>>connectors on the cable, which both can be plugged into the
>>MSX, you will have the risk that people will plug the wrong
>>one in their MSX. And believe me, if errors like this one
>>can be made, they will be made! Please let not get us in
[snip]
>I fully agree with Alex. My previous mail was perhaps not clear on
>this subject, but the main reason indeed to have different connectors
>(no DB9) on the network side was/is to avoid wrong connections.
Since so many ppl are againt using DB9's (except to plug into the MSX)
I guess I must sway and think of something else as well. (eventho
under loud protest ;-) )
>I suggest we let Patrick 'Patsie' Lina make a choice from the now
>available options:
I feel flattened.. ehm.. flattered :---)
>(1) tulp
>(2) DIN
>(3) microphone connector (I don't know the 'technical' name)
The last one is called a 'Jack' Don't ask me why, it just is :-)
Since the less connectors the better, the first option fails.
We need at least 4 pins per connector (d0,d1,ack,gnd), so I guess
a Jack won't work either. Which leaves us with.... *drumroll*
Door number 2! :-)
Eventho a DIN8 has way too many pins, I guess it will suffice for
our purpose.
SEND (DIN8 male) RECV (DIN8 female)
d0 1 ---------------+ +-------------- 1 d0
d1 2 -------------+ | | +------------ 2 d1
ack 3 -----------+ | | | | +---------- 3 ack
gnd 8 -----------|-|-|--|-|-|--+------- 8 gnd
| | | | | | |
| | | | | | |
3 7 6 1 2 8 9
MSX (DB9 female)
The send/recv - male/female part isn't that hard to
remember. If you don't get that one, you're waaay to
young to hold a soldering iron as well :-)
We prolly all know what a DB9 looks like about now!
When looking at a DIN8, the schematics are like this:
female male
7 6 6 7
3 8 1 1 8 3
5 4 4 5
2 2
So in short:
pin 1 I D0 -> RECV/fem pin 1
pin 2 I D1 -> RECV/fem pin 2
pin 3 I ACK -> SEND/male pin 3
pin 6 O D0 -> SEND/male pin 1
pin 7 O D1 -> SEND/male pin 2
pin 8 O ACK -> RECV/fem pin 3
pin 9 GND -> BOTH pin 8
>Patrick 'Patsie' Lina, make your choice and mail us the connections!
Okay, what did I win? ;-)
I'd better stop now, there are way too many smileys in this
text already...
Greets,
Patsie
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