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Newbie wondering about a do it all joystick
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Tiger-Heli:

--- Quote from: RandyT on August 24, 2005, 10:47:19 am ---It doesn't ignore diagonal movements of the stick, rather makes intelligent decisions about which of the 16 possible directions to output based on the joystick position and a number of other criterion.

--- End quote ---
Don't you mean 8 possible directions?  (Up, Up-Right, Right, Right-Down, Down, Down-Left, Left, Left-Up) (and in 4-way mode only the 4 primary ones, except the extreme diagonals), and Centered.

--- Quote ---It's a small distinction, but an important one as limiting output to the primary directions is possible using NOT logic on a standard 8-way.  Of course this approach to electronic restriction does not give the desired effect, rather makes the problem worse.

--- End quote ---
In other words, MAME's 4-way predictor code, correct?
RandyT:

--- Quote from: Tiger-Heli on August 24, 2005, 10:56:07 am ---
--- Quote from: RandyT on August 24, 2005, 10:47:19 am ---It doesn't ignore diagonal movements of the stick, rather makes intelligent decisions about which of the 16 possible directions to output based on the joystick position and a number of other criterion.

--- End quote ---
Don't you mean 8 possible directions?  (Up, Up-Right, Right, Right-Down, Down, Down-Left, Left, Left-Up) (and in 4-way mode only the 4 primary ones, except the extreme diagonals), and Centered.

--- End quote ---

Actually, the DRS code carves the space into up to 16 possible areas.  This 16-way DRS mode may or may not be useful for much, but it is there. 

But yes, 99.9% of the time the normal 8-positions you described are the pool of possibilities that will be drawn from.


--- Quote ---
--- Quote ---It's a small distinction, but an important one as limiting output to the primary directions is possible using NOT logic on a standard 8-way.  Of course this approach to electronic restriction does not give the desired effect, rather makes the problem worse.

--- End quote ---
In other words, MAME's 4-way predictor code, correct?

--- End quote ---

More like the logic circuit attempted by  someone a while back.  They discussed using actual logic chips that would only allow a "clean" primary direction to ever be passed on to the interface.  This had the effect of inhibiting any action that actuated more than one switch simultaneously.  Unfortunately, this only exacerbates the problem, instead of making it better.

MAME may be able to simulate this setup in software, but I wouldn't expect that anyone would want to. :)

RandyT

Tiger-Heli:

--- Quote from: RandyT on August 24, 2005, 11:37:58 am ---Actually, the DRS code carves the space into up to 16 possible areas.  This 16-way DRS mode may or may not be useful for much, but it is there. 

--- End quote ---
Gotcha!

--- Quote ---More like the logic circuit attempted by  someone a while back.  They discussed using actual logic chips that would only allow a "clean" primary direction to ever be passed on to the interface.  This had the effect of inhibiting any action that actuated more than one switch simultaneously.  Unfortunately, this only exacerbates the problem, instead of making it better.

--- End quote ---
Ah. . . IMS, that was Derrick Renaud (sp?), and that was what started the whole 4-way code, sticky-mode debate in MAME.

I always thought it odd that he went on to be responsible for most of the analog sound fixes in MAME, but looking back on it this way it doesn't seem so strange.
Kremmit:

--- Quote from: TurboC-- on August 23, 2005, 11:50:18 pm ---No but that's a good idea.  Although Q-bert is pretty much a niche thing to design a whole joystick around.  How about a 4/8 way switchable, and design the mounting system to be able to rotate 45 degrees?  Sounds like a project!

--- End quote ---

Not necessary.  A 4/8 way switchable like the Omnistick Prodigy or the T-Stick+ plays Qbert perfectly well when switched to 8-way mode, as long as you map the inputs in MAME correctly. 

Here's a link to the last time this discussion came up.
rescue161:
I'm with Kremmit on this one.  I did the same thing and it works like a champ.

Just map Mame to do what you want to do.

Also on the stick I have when it's in 8-way mode stays in the corners. and when in 4-way stays on the sides.  Hard to explain, but the first stick I had did not do this.

I don't think with the 49 way stick that you'll get the Diag/corner "feel" that you'll get with Kremmit's and my setup.
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