Rollover, hold down two keys, Noppoo Choc Mini

[evenjn]

Hello everyone, this is my second post.
After my first post, I bought a Noppoo Choc Mini and I was happy ever since.
A few days ago, I made some experiments with the keys and I was surprised to find this behavior:

if I hold down two alphanumeric keys, such as X and Y, the result is the following:
xyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

however, if I hold down two keys, that are not both alphanumeric, such as X and /, the result is the following:
x/x/x/x/x/x/x/x/x/x/x/x/x/x/x/x/x/x

For gaming purposes, I find that the second behaviour is better.

Actually, I was expecting that any 2-key-rollover keyboard would display the second behaviour for ANY pair of keys.

Did I misunderstand the meaning of rollover?

[Zifle]

Hmm, that's odd, I seem to get the former behavior consistently, this however being on linux.
I believe the former is the intended behavior, done on OS layer, rather than hardware, but that is just a guess =/

Perhaps someone else can come in with some more insight?

[Soarer]

It's because in some ways the Noppoo appears to the computer as two keyboards, which means you can sometimes get two lots of key repeat going on at the same time.

Games don't care much about repeats, so it makes little difference to them.

[evenjn]

I tried with the Optimus Maximus Demo (www.artlebedev.com/portfolio/optimus/demo/) and it looks like the system knows that two keys are being held down.

And if I use WASD to move in a game, it works as expected: for example I can hold W and A down and move forward-left.

But for some reason when you type, when two alphanumeric keys are held down, it ignores the first key after the second was pressed. I agree this has to be the result of the software.

Also, I tried connecting a second USB keyboard and holding down the X key on one keyboard and the Y key on the second one.
The result is:
xyxyxyxyxyxyxyxyxyxyxyxyxyxyxyxy

So this might really be as you say, that it depends on the Noppoo appearing as two keyboards and cheating the software that would otherwise ignore (by design) all but the last key being held.

However for me this kind of cheat is actually a feature! I wonder whether there are other keyboards that behave like this.

[stingrae]

i and o should result in oioioioio as well...

Sadly in one game I play sometimes the popular mod considers multiple keyboards a cheat and thus blocks one. Ergo ~ doesn't register which makes console impossible to acceess. This is probaly the worst thing about a noppoo.