[blitz] detecting "2 keys down" in blitz mode

[peceha]

Hi,
is the code below correct?



if it is then why I'm having troubles with (S) direction ($21)?
(S) alone works fine but when others (W,A,D) are down it doesn't - program behaves like (S) is not pressed.

Thanks

[Cobe]

I only used it few times like this
If rawstatu($xx) and rawstatus($yy) then.. it worked for me.

[peceha]

Haha,
I think there is something wrong with my keyboard.

My original version was like yours but I changed it because it was not working
At the same time I changed WSAD to arrows and was happy that new solution worked (but forgot that I also changed the keys).

Today I moved back to WSAD and a problem with combination of S+ other key is back but arrows work fine (also other key instead of (S) works fine).

So the problem is my keyboard.

Thanks

[Daedalus]

Some Amiga keyboards don't support certain simultaneous key combinations due to the design of the matrix and the controller. This was an issue that only really became prominent when first person shooters started appearing - people suddenly found that WASD controls didn't work on the A1200 for example, but playing certain chords in trackers was also impossible on the A1200 back in the day due to this limitation. The arrow keys and qualifiers are more capable of being detected simultaneously, so games tended to use them instead of WASD as on the PC. IIRC big-box Amiga keyboards could handle them, and adaptors for PC keyboards also overcame the problem.

So it's probably not your keyboard specifically, but every Amiga 1200 keyboard

[peceha]

hmmm...
I think I would be more happy if it was my keyboard to blame

but to be honest I've never heard about it - good to know anyway

Thanks