At 01:03 AM 7/28/98 +0300, you wrote:
>2) You can get them in at least three different colors (red, black and
>white
>are the most common ones), which matches exactly the number of signals on
>our ring.
Everyone would have to use the same color code, otherwise it's useless.
Also, because most people only need stereo, most shops probably have only 2
different colors.
I'm in favor of a single cable that transmits all 3 signals:
1) There is no way you can correct it wrong (can happen if someone doesn't
keep to the standard color code).
2) There are less cables for people to trip over (important factor on MSX
fairs ;).
3) It's probably cheaper.
>Below, you can find a proposal based on Patrick Lina's initial drawing. I
>leave it up to Maarten ter Huurne to translate the signal names into the
>ones used by his protocol.
Current signal names are like this:
1 I FWD : DR0 IN -> 6
2 I BACK : DR1 IN -> 7
3 I LEFT : ACK IN -> 8
4 I RIGHT : x
5 +5V : x
6 I/O TRG_A : DR0 OUT -> 1
7 I/O TRG_B : DR1 OUT -> 2
8 O OUT : ACK OUT -> 3
9 GND : x
I didn't connect the grounds because I was out of wire. Is there a reason
why the grounds should be connected?
I might switch DR0 and DR1 in the next version, because it can save 1 rra
instruction (5 clockticks). But as DR0 and DR1 will be swapped on both
ends, this doesn't matter for cable construction.
Would it be a good idea to connect TRG_A to RIGHT? Using this, we could
make an "auto detect" option: the program would be able to see in which
joystick port the network connector is plugged in.
Bye,
Maarten
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