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Author Topic: Ipac Usb Vs, Ps/2  (Read 20698 times)

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RandyT

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Re:Ipac Usb Vs, Ps/2
« Reply #40 on: June 15, 2004, 07:50:46 pm »
The proof is that I saw with my own eyes that quite a large proportion, of the PC's in the stores I went to, did not have a PS/2 port already. The last time I noticed something similar, one year later I was virtually unable to buy something with the obsolete connector.


Good grief, find someplace else to shop then.  Better yet, go to any of the major MoBo makers (Tyan, Asus, etc) and see if their current high-end system board solutions are missing the usual complement of legacy I/O ports.  Tell me what your embedded crystal balls report to you afterwards. (actually, no need to :))


Quote
The fact that you are the only one in the world with a PS/2 joystick, a GPS that apparently will work on a PS/2 port (as opposed to one that just uses the same style connector, but is wired for an RS232 interface internally) and something that will control machines through a port that usually is only used for reading information, does not change anything.


It's a CNC machine.  One of the C's stands for "computer".  You can figure out the rest.

Remember the portable devices I was talking about?  My GPS uses the PS/2 port for power.  No PS/2 port, no power, no workee.  It has a DB-9 for RS-232 serial communications.

As for the joysticks (note plural), one is made by the same company as this unknown beast (sarcasm)

http://www.arcadecontrols.com/arcade_powerramp.shtml

And the other is an Interact beast called the Cyclone.  Hybrid gameport/ PS/2 connection (and no it's not just for power, there are 22 programmable keys attached to the buttons on the thing)  Nice Joystick too, actually. :)

Quote
In fact, I have some other devices myself that use the PS/2 port as well.

Well, if I have some, and You have some, and we live in different parts of the world, I'd say there's a preeetty good chance that a bunch of other people have some as well...and they might not be as excited as you about giving them up right away.

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The point is that it's purpose for the vast majority of the buyers is connecting a keyboard and a mouse

This is true, and there are still plenty of PS/2 devices out there for this purpose.  Some of them will do both, but the most economically priced ones, usually do not.


Quote
(and that all PS/2 devices can be made without using a PS/2 port just as well).

As can all Parallel port devices, as can all serial port devices, and with the advent of USB 2.0, supposedly as can 1394 Firewire (although you may find some argument on that last one).  That statement in and of itself really doesn't say anything to support your assertions.


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So, the average buyer doesn't care at all if PS/2 will go and thus it will go since PC manufacturers and apparently even Microsoft want it to go. That IS already happening. I don' t need a crystal ball to predict the current time (well, I have one in each of my eye sockets I guess).

Already covered the need to do real research and what MS wants and why.

When you say "the average buyer", I'm assuming you are referring to complete new system buyers.  There is a situation here that you seem not to be taking into account.  That situation is the fact that the PC currently in front of virtually every casual user (email, web, tax software, accounting users) who has purchased a system within in the last 2 years doesn't need to upgrade.  There have been no "killer apps" recently that have people rushing to upgrade, and with the quality of home gaming systems nowadays, even the power gamers' numbers have declined.  What exactly is going to drive the new technology?  What is going to cause this mass migration you envision to "legacy free" systems?  What is going to make your Mom and Dad throw away the $800 system they bought last year, so they can spend another 6 or 700 dollars so they can have a computer that won't let them hook their $250 printer to it?  That's a tough nut to crack, and if you can, I'm sure MS would be very interested in speaking with you.

In any case, this dead horse is not only flogged, but it's been around so long that it's turned to dust and the maggots that fed off it are using walkers while their offspring moved away because the neighborhood has gone to hell.

So the last word is yours.  I'm out ;) *edit*  Ok, not completely :)

RandyT

*edit*
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« Last Edit: June 17, 2004, 09:56:50 am by RandyT »

patrickl

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Re:Ipac Usb Vs, Ps/2
« Reply #41 on: June 16, 2004, 12:49:22 am »
So the last word is yours.  I'm out ;)
OK, thanks. Just once more then
Quote
My GPS uses the PS/2 port for power.  No PS/2 port, no power, no workee.  It has a DB-9 for RS-232 serial communications.
That GPS is exactly what I described. That is not a PS/2 device it merely has a PS/2 style connector.  You carry a PC around with you for powering that thing? Didn't think so.

Just goes to show how short the straws are you are grasping for ...
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RandyT

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Re:Ipac Usb Vs, Ps/2
« Reply #42 on: June 16, 2004, 07:48:14 am »
So the last word is yours.  I'm out ;)
OK, thanks. Just once more then
Quote
My GPS uses the PS/2 port for power.  No PS/2 port, no power, no workee.  It has a DB-9 for RS-232 serial communications.
That GPS is exactly what I described. That is not a PS/2 device it merely has a PS/2 style connector.  You carry a PC around with you for powering that thing? Didn't think so.

Just goes to show how short the straws are you are grasping for ...

Well it was my last word on the debate.  You can't honestly expect me to sit idle while you tell me what I possess.

The GPS has no screen of it's own, therefore requires a PC to use it, and gets it power from said PC through it's PS/2 port.

Sheesh, talk about short straws!

RandyT

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Re:Ipac Usb Vs, Ps/2
« Reply #43 on: June 16, 2004, 08:40:36 am »
Good grief, find someplace else to shop then.
Randy, if you were in the store selling USB vibrators, maybe YOU need to find someplace else to shop, j/k  :P
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Re:Ipac Usb Vs, Ps/2
« Reply #44 on: June 16, 2004, 08:48:54 am »
Ok, I suspect RandyT may be back in after this post, but that's okay with me.

We have hashed out the theoretical advantages and I don't think anyone knows much more than they did when this started.

On-Topic   The original poster asked whether to operate the I-PAC/2 in USB or PS/2 mode.

The real answer is   "Opinions vary on this, but the device supports either mode.  Definitely get the extra cable and you can support whichever one you want."

This is a real advantage of the I PAC/2 for arcade cabs.  Note: I am NOT saying that you shouldn't buy a KeyWiz b/c it lacks USB support.  I personally do not plan to upgrade my computer (again) in the near future, so I could easily use the PS/2 port on my current motherboard.  When I do get ready to upgrade, it might mean that I have to buy an Asus rather than an MSI motherboard if I want the PS/2 port, or buy a PCI card to add a PS/2 port.  Of course, if most motherboard manufacturers do phase out the PS/2 port, I'm sure the KeyWiz will convert to the new standard and I could just replace my encoder to support it.

But the initial question was whether to use the I-PAC/2 in USB or PS/2 mode, and there is a real advantage to having the option to use either one.  With the KeyWiz, if you upgrade your PC you are forced to look for components with a PS/2 port (not that it's a difficult search).  With the I PAC VE, you are forced to abandon running your cab in DOS b/c it does not have PS/2 support (and if the USB support in your hardware is flaky, you are out of luck as well), but with the I- PAC/2, you can go either way.

Again, my personal opinion is that there is a slight performance advantage to PS/2, but not enough to make me favor that interface if USB were more convenient for me.  If I had an I-PAC/2 that I was installing in a cab, which I would leave permanently plugged in, and had both the PS/2 and USB ports available to me, I would run it in PS/2 mode b/c I have heard of less problems with this mode.

But I think it comes down to a similar situation to statements made when the KeyWiz was introduced which implied that the KeyWiz offers faster performance although performance lag was never a complaint from I-PAC users - to use a word picture:

Let's say I have three bikes to choose from for my trip in to work:
The Suzuki Hayabusa (KeyWiz) tops out at 186 Mph.
The Honda Blackbird (I-PAC in PS/2 Mode) tops out at 179 Mph.
The Yamaha FZ1 (I-PAC in USB Mode) tops out around 165 Mph (???).
Now lets assume that the bikes have equal performance in the 0-60 Mph part of the spectrum and I only drive on 55mph roads and obey the speed limits.  It really doesn't matter which bike I choose.

Back to reality   I mashed 8 buttons on my PS/2 keyboard through the QVS USB adapter and only 3 of them registered due to blocking, just like in PS/2 mode.  Next test is to see if I mapped out the matrix for this kb earlier or substitute it for one that I have mapped and mash 15 keys and see what it does.  Not that any of this matters, b/c all we are measuring is number of simultaneous keypress supports, not data transfer rate, and even that wouldn't gauge the performance of the I PAC/2 in USB mode vs. PS/2.

FWIW. . .
It's not what you take when you leave this world behind you, it's what you leave behind you when you go. - R. Travis.
When all is said and done, generally much more is SAID than DONE.

patrickl

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Re:Ipac Usb Vs, Ps/2
« Reply #45 on: June 16, 2004, 04:30:38 pm »
So the last word is yours.  I'm out ;)
OK, thanks. Just once more then
Quote
My GPS uses the PS/2 port for power.  No PS/2 port, no power, no workee.  It has a DB-9 for RS-232 serial communications.
That GPS is exactly what I described. That is not a PS/2 device it merely has a PS/2 style connector.  You carry a PC around with you for powering that thing? Didn't think so.

Just goes to show how short the straws are you are grasping for ...

Well it was my last word on the debate.  You can't honestly expect me to sit idle while you tell me what I possess.

The GPS has no screen of it's own, therefore requires a PC to use it, and gets it power from said PC through it's PS/2 port.

Sheesh, talk about short straws!

RandyT
Actually, I know quite a lot about GPS (I gave a workshop and wrote several reviews on the subject) so I know what you are talking about and I know what I'm talking about. However, I really don't even need to know which specific GPS model you own since a GPS is never a PS/2 device. So, I could guess you have an Earthmate GPS receiver, but I could be wrong and that wouldn't matter.

Your GPS works perfectly fine with another power cable too. That you specifically ordered it with a cable that draws power from a PS/2 port doesn't make the GPS itself a PS/2 device. The fact that I can charge my mobile phone with a USB charger cable (or PS/2 charger cable for that matter) doesn't make the phone a USB (resp PS/2) device. Otherwise you could call all devices taking 5V at low power PS/2 devices.

In fact even that cable doesn't really need a PS/2port since that "PS/2" power cable could also be fed from a 5V power outlet with a female mini DIN connector too.

I have to say that the problem for me is not even so much that the example is incorrect, but more that I'm amazed you think this kind of far fetched examples will prove that PS/2 has to remain for a long time.
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RandyT

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Re:Ipac Usb Vs, Ps/2
« Reply #46 on: June 16, 2004, 05:03:02 pm »
[I have to say that the problem for me is not even so much that the example is incorrect, but more that I'm amazed you think this kind of far fetched examples will prove that PS/2 has to remain for a long time.

Call it incorrect if you want.  The plain fact is that it is that I told you quite plainly that it was only for power, and it would be a big deal for me if that power source wasn't there.  Of course I could always buy an adapter or a power supply, or heaven forbid,  batteries.  But these are all extra cost items/inconvenience items.

Now that you've beaten this small point to death, try something a little more challenging :)

RandyT

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Re:Ipac Usb Vs, Ps/2
« Reply #47 on: June 16, 2004, 06:45:52 pm »
Just jumping on the bandwagon of those that have PC joysticks that connect via the keyboard port. Saitek made a couple called PC Dash that connect via keyboard only, others (namely high end programmable flight controllers) connect to both a joystick port and keyboard port.

On the eminent demise of the PS/2 port, I'm reminded of a Mark Twain quote. ;) I'm sure they'll disappear eventually, but seeing as how stuff like mini-ITX motherboards include them I don't see it happening all that soon. I have noticed they've quit putting 5.25" floppy support in the BIOS of modern systems, and with the popularity of USB flash drives, I'd believe we'll loose floppy drives all together before we lose the ps/2 ports.

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Re:Ipac Usb Vs, Ps/2
« Reply #48 on: June 16, 2004, 08:18:52 pm »
ok, this is really off subject, buit from when Tailgunner said they'll porbably stop putting folppy drives in alltogether, i know i read somewhere (probably in the Maximum PC magazine) floppy drives will reemerge (altough they may be hidden inside the pc case) as they are needed for any type of RAID hard drives. not a problem for MAME machines, though, as i doubt most of us are going to use 250 gb hard drives. i could be wrong about this (the floppy drives, not the 250gb hard drives) and will recheck it.

patrickl

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Re:Ipac Usb Vs, Ps/2
« Reply #49 on: June 17, 2004, 03:51:52 am »
[I have to say that the problem for me is not even so much that the example is incorrect, but more that I'm amazed you think this kind of far fetched examples will prove that PS/2 has to remain for a long time.

Call it incorrect if you want.  The plain fact is that it is that I told you quite plainly that it was only for power, and it would be a big deal for me if that power source wasn't there.  Of course I could always buy an adapter or a power supply, or heaven forbid,  batteries.  But these are all extra cost items/inconvenience items.

Now that you've beaten this small point to death, try something a little more challenging :)

RandyT
The point is that it's a far fetched example (just like the other ones you gave actually). They don't even sell that GPS anymore. The new one supports ... well guess .... yep you got it ... USB!

Any way you put it, that GPS power cable is no reason for PC manufacturers to include PS/2 ports on PC's. They dropped ISA, and DIN keyboard connecters even though I still have lots of stuff for it collecting dust.

But I understand Tiger-Heli's explanation. Of course KeyWiz would loose customers if people would understand they will have trouble finding PS/2 connectors in the near future.
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Tiger-Heli

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Re:Ipac Usb Vs, Ps/2
« Reply #50 on: June 17, 2004, 06:40:48 am »
But I understand Tiger-Heli's explanation. Of course KeyWiz would loose customers if people would understand they will have trouble finding PS/2 connectors in the near future.
That is NOT what I said, although it is a clever re-wording of it.

What I DID say could be more accurately paraphrased as:

***

If USB vs. PS/2 compatibility, performance, and connector availablity are issues for you (and I'm not sure they should be), then the I-PAC/2 and I-PAC/4 are better options than either the KeyWiz, I-PAC/VE or Mini-PAC, because the first two encoders allow you to choose either input mode.

***

In other words, there are advantages either way - if you are building a DOS cab with an older PC that you got at a yard sale just for the arcade cab, you won't care much about USB support.  If you decide later that you want to make a desktop controller for your wife's PC to use, you may well want USB over PS/2.
It's not what you take when you leave this world behind you, it's what you leave behind you when you go. - R. Travis.
When all is said and done, generally much more is SAID than DONE.

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Re:Ipac Usb Vs, Ps/2
« Reply #51 on: June 17, 2004, 06:45:30 am »
I'm all for USB, but I'd like to see PS/2 stay.  I guess the fact that an IPAC in PS/2 mode can handle more simul. presses than in USB mode is a good indication that USB is not perfect...

And why the f*ck did they make the USB connector simetrical, its always the wrong way round!!

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Re:Ipac Usb Vs, Ps/2
« Reply #52 on: June 17, 2004, 06:54:17 am »
And why the f*ck did they make the USB connector simetrical, its always the wrong way round!!
WORD!!!!
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When all is said and done, generally much more is SAID than DONE.

patrickl

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Re:Ipac Usb Vs, Ps/2
« Reply #53 on: June 17, 2004, 07:08:41 am »
I didn't mean that as a literal translation of what you said. It's more like a combination of ideas:
- users who need USB support need to get an I-PAC (taken from your message, again not literally, but that is one of the points I read in there)
- PS/2 will go away in something like 2 to 5 years

Put these together and some people might get the idea they better buy an I-PAC and be prepared for the future.

It's a problem discussing on a forum. When I write long messages people start picking on details that don't matter to the bigger issue and when I write a short message people can find interpretations in the message I never intended there :P
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patrickl

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Re:Ipac Usb Vs, Ps/2
« Reply #54 on: June 17, 2004, 07:14:14 am »
And why the f*ck did they make the USB connector simetrical, its always the wrong way round!!
Hehe, yeah that USB connector is probably the worst ever. Allthough plugging in a PS/2 connector in the blind was never that easy either. I always found myself turning the plug around until it fit. I also tended to plug the keyboard in the mouse socket instead of the keyboard one.
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Tiger-Heli

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Re:Ipac Usb Vs, Ps/2
« Reply #55 on: June 17, 2004, 07:47:01 am »
I didn't mean that as a literal translation of what you said. It's more like a combination of ideas:
I will accept that explanation - the main problem is I don't buy into the fact that PS/2 is rapidly going to vanish, although I don't see that as beyond the realm of possibilities.
Quote
- users who need USB support need to get an I-PAC (taken from your message, again not literally, but that is one of the points I read in there)
Well, if we are limiting this to I-PAC vs. KeyWiz and USB support is required, KeyWiz doesn't have it, so this is pretty much a no-brainer.
Quote
- PS/2 will go away in something like 2 to 5 years
This is the part I see as a possibility but not a certainty.
Quote
Put these together and some people might get the idea they better buy an I-PAC and be prepared for the future.
Perhaps, but I don't think PS/2 will vanish, just be more difficult to find.  For example, I can still find motherboards with gameports, but not for the latest generation of processors, and I have to pick and choose on the current low-level processors.  That doesn't mean that I can't find gameport supporting motherboards on E-bay, etc.  The same will be true for PS/2, but if I don't plan to upgrade, this doesn't matter.
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It's a problem discussing on a forum. When I write long messages people start picking on details that don't matter to the bigger issue and when I write a short message people can find interpretations in the message I never intended there :P
Fair enough.
It's not what you take when you leave this world behind you, it's what you leave behind you when you go. - R. Travis.
When all is said and done, generally much more is SAID than DONE.

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Re:Ipac Usb Vs, Ps/2
« Reply #56 on: June 17, 2004, 07:53:48 am »
And why the f*ck did they make the USB connector simetrical, its always the wrong way round!!
Hehe, yeah that USB connector is probably the worst ever.
Actually, you're right again, PS/2 was more of a pain than USB, with USB it's just test, flip, insert.  With PS/2 I was always rotating the connector and hoping I wasn't bending pins trying to get it to line up.

How many times have you plugged in a monitor HDB15 or telephone RJ-45 plug in upside-down?  (Probably never).
It's not what you take when you leave this world behind you, it's what you leave behind you when you go. - R. Travis.
When all is said and done, generally much more is SAID than DONE.

RandyT

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Re:Ipac Usb Vs, Ps/2
« Reply #57 on: June 17, 2004, 08:14:34 am »
But I understand Tiger-Heli's explanation. Of course KeyWiz would loose customers if people would understand they will have trouble finding PS/2 connectors in the near future.

Hehe 5+ years = near future.......what are you, a redwood tree?   :D

5 years in the world of computers is a virtual eternity.  By then, even USB could be on the outs for something better.  But you've got the crystal ball.

BTW, you are still homing in on small meaningless portions of the discussion, and  your tactic of attempting to discredit me personally rather than address the points I make in my posts, is transparent at best.  How about taking on that issue of how you get people to buy into technology that 90% of average consumers don't need, rather than dancing around trying to save face?  Your entire argument hinges on this question.

Up to now, you added very little substantive information to this discussion, just a lot of unsubstantiated predictions / rhetoric.

RandyT


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Re:Ipac Usb Vs, Ps/2
« Reply #58 on: June 17, 2004, 08:15:04 am »
Mini-PAC works in PS2 mode as long as you are not using it with a trackball or spinner.  I'm using mine in PS2 for players 3&4 on my 4 player cab daisy chained to my J-PAC and still have a PS2 keyboard plugged into the Mini-PAC as well.

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Re:Ipac Usb Vs, Ps/2
« Reply #59 on: June 17, 2004, 08:23:42 am »
Ok, I'm going to play Devil's Advocate and go off the deep end a little here, so if I make any obvious errors, someone feel free to drag me back to reality.

First off, I would like to question how much of an issue this could possibly be?

For example, I doubt I could mash a button more than 4 or 5 times a second, but lets give me the benefit of the doubt and say that I can hit 10 presses per second.  Theoretically, if the encoder processes the data faster than 0.1 sec per keypress everything should be fine.  Alright, I remember from a previous thread another thing, but lets say the game displays at 60Hz, that means that each frame takes 1/60th (0.0166) seconds.  But I would think the slowest encoder in the slowest mode would be faster than this, meaning that I can be assured that my input is recorded during the same frame that I press the button, so how could speed be an issue here?

NOTE: My motorcycle example may be more accurate than I realized.
The proof of the pudding: download the Passmark keyboard test from www.passmark.com. This test has a box called "Lag". (I requested this as a new feature, and they added it). Wire two inputs together on an I-PAC, and check this box when you press the button. You will never see a slower figure in the timer display with USB than with PS/2.
I considered using the Passmark test with and without my QVS USB adapter, but I see at least 4 problems with this test:

1)  As RandyT pointed out, 2 inputs shouldn't tax any encoder, but it should be no problem to wire 10 or 12 inputs to a button and try the test that way.

INTRO: What we are concerned with is the time between when I depress a key, and when that keypress is output to the application.  Correct me if I am wrong, but I believe there are two parts to this equation.  I see no way for the software to know when I actually depress the key, only when the keydown signal is received at the PS/2 or USB port.

2)  So we are losing the time required for the encoder to process the signal and convert it to the proper format and send it to the PC.  In other words, if the PC can handle a USB signal in 0.1 seconds and a PS/2 signal in 0.2 seconds, the software will show the USB interface as faster.  But in fact, if the I-PAC takes 0.3 seconds to process a PS/2 output, and 0.5 seconds to process a USB output, the total time is actually as much slower in USB mode as the software indicated it was faster (0.5 seconds total for PS/2 and 0.6 seconds total for USB).  (NOTE: I just made those figures up and have no idea on total processing time required).

3)  Based on previous discussions, I would expect the actual time measured by Passmark (the CPU processing time) to vary in USB based on other activity on the USB and PCI bus.  In other words, perhaps the PS/2 delay is 0.5 seconds and the USB delay is 0.4 or 0.1 or 0.2, etc. based on system activity.  USB is faster, but this variable delay might be worse in terms of gameplay than a fixed delay.

4)  I have never heard of Passmark before this thread.  For all I know, this could be software that Andy Warne wrote himself offered on a website that his brother-in-law hosts that does nothing but display a ramdomly generated lower lag figure for USB vs. PS/2.  NOTE: Before anyone flames me for accusing Andy of anything fishy, I can say the same things about the performance claims and software tests on the GroovyGameGear site.  In both cases, I am taking the information to be accurate, and I assume it to be so, but I am relying on the word of the developer who has a vested stake in the product.  What I am getting at here, is if I read a magazine review of a new Ford car, I feel fairly confident if the magazine says "We ran the car through our own dyno, like all our test cars, and it generated a solid 305 Hp."  I feel less confident if they say "We took the car to Joe's dyno, a respected independent shop, and it generated a solid 310 Hp."  Still less "Ford recommended we take the car to Tim's Performance, and they dyno'd it at a whopping 450 Hp." And much less "Ford told us that they had hit 500 Hp with this car on THEIR dyno in Dearborn."

FWIW!
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Re:Ipac Usb Vs, Ps/2
« Reply #60 on: June 17, 2004, 09:56:10 am »
But I understand Tiger-Heli's explanation. Of course KeyWiz would loose customers if people would understand they will have trouble finding PS/2 connectors in the near future.

Hehe 5+ years = near future.......what are you, a redwood tree?   :D
Ehm I said 2 to 5 years  (in two years hard to find and in 5 years virtually extinct) that's something different from 5+.
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BTW, you are still homing in on small meaningless portions of the discussion, and  your tactic of attempting to discredit me personally rather than address the points I make in my posts, is transparent at best.
If anyone is homing in on meaningless points then it's you. I keep trying to get you back on the big issue, but you keep defending compeletely meaningless examples.

Unfortunately you often seem to miss the general point of my messages and you only seem to look for small details to pick on. So I just repeat the points again and let the misunderstandings slide (or at most give a slight hint). I like "meaningless" discussions like this, but I do like to keep things on track. I won't react to most of the sidetracking and misinterpretations you post.

Only personal thing I did was highlight one of your examples. I described how meaningless it was to use exceptions like that as a rule to contradict a general trend. I also felt I needed to show how far you stretch the definition to call something a PS/2 device. Instead of understanding those points you actually start defending a 0.00001% market share item as an obvious sign PS/2 is here to stay.
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How about taking on that issue of how you get people to buy into technology that 90% of average consumers don't need, rather than dancing around trying to save face?  Your entire argument hinges on this question.
I don't understand what you mean with this, but my point actually IS that (at least) 90% of the people don't need a PS/2 port on their PC so they won't care if it goes. I'm all for not paying for stuff I don't need.
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Up to now, you added very little substantive information to this discussion, just a lot of unsubstantiated predictions / rhetoric.
Well you are right I did not add anything after my first few posts. But let me sum it up for ya:
1) PS/2 is obsolete (no function demands it's existence for the general public and newer alternatives exist)
2) PS/2 is virtually solely used for keyboards and mice
3) a new PC usually comes with a keyboard and mouse anyway (so the old PS/2 mouse and keyboard can stay with the old one it replaces)
4) PS/2 is targeted for termination by the hardware and software manufacturers
5) I have witnessed PC manufactures drop obsolete standards in a hurry over and over again (I bought a few PC's with a DIN keyboard connector and the next year when I needed one extra I couldn't find one anymore with that connector)
6) I have witnessed that almost all past PS/2 devices are already migrated to USB (in fact the "PS/2" mice and keyboards I bought over the last few years actually need an adapter to connect to PS/2 and are really USB devices)
7) I have witnessed the trend that PC's are starting to drop PS/2 ports right now

Those seem pretty easy to understand points to me. They are all factual observations and hardly unsubstantial or rhetoric. Of course there is no hard evidence that these points will result in PS/2 going away rather qucikly, but it seems a very likely path.

You on the other hand have claimed that PS/2 will never go away because you (and probably a few other people as well) own some old PS/2 connected devices (other than mice and keyboards) that you would like to keep using in the future and ... ehm well that was it basically. Well, maybe your remark that PS/2 devices are still sold was meant as proof, but then most of them are USB devices at the same time as well.
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Re:Ipac Usb Vs, Ps/2
« Reply #61 on: June 17, 2004, 10:58:00 am »
Only a few very minor quibbles here:
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How about taking on that issue of how you get people to buy into technology that 90% of average consumers don't need, rather than dancing around trying to save face?  Your entire argument hinges on this question.
I don't understand what you mean with this, but my point actually IS that (at least) 90% of the people don't need a PS/2 port on their PC so they won't care if it goes. I'm all for not paying for stuff I don't need.
The point is that you can design a functional arcade cab either without using the USB port, or without using the PS/2 port, so it's a choice of the cab builder which one to use.
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3) a new PC usually comes with a keyboard and mouse anyway (so the old PS/2 mouse and keyboard can stay with the old one it replaces)
Many people don't buy new PC's but rather upgrade the motherboard in an old one.  However, it is fairly cheap to either buy a $6.99 adapter or buy a new USB keyboard/mouse combo; so I don't think the average PC user would miss the PS/2 port.
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(I bought a few PC's with a DIN keyboard connector and the next year when I needed one extra I couldn't find one anymore with that connector)
There were both types of adapters - DIN keyboard to PS/2 PC (common) and PS/2 Keyboard to DIN PC (less common).  There are also currently PS/2 Keyboard-Mouse to USB PC adapters (although they wouldn't be recommended with an I-PAC or KeyWiz).  Interestingly, I haven't seen any USB keyboard to PS/2 port adapters (that worked universally with any USB mouse/keyboard) so perhaps this confirms that the industry is not concerned with this compatibility.
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Re:Ipac Usb Vs, Ps/2
« Reply #62 on: June 17, 2004, 12:03:30 pm »
(I bought a few PC's with a DIN keyboard connector and the next year when I needed one extra I couldn't find one anymore with that connector)
There were both types of adapters - DIN keyboard to PS/2 PC (common) and PS/2 Keyboard to DIN PC (less common).  
FWIW, those DIN to mini DIN adapters never worked for me. They always would fall out after a while.

You are right of course that in the second hand market PS/2 ports will remain for much longer, but would you buy something that cannot connect to your current computer if a perfectly good alternative exists that will connect (even though your main aim is to connect to an old PC that does have a PS/2 port)?

But I'm sorry I went over you excellent post just before my large one. You indeed make some good points there. I doubt we'll ever get to the bottom of this.  :-\

To measure the timne from keypress to event in the PC, maybe you could build a testsetup where a scope measures the actuall keypress and then a program switches on a port on a parallel connector when it reads that keypress. Wouldn't that show how long the whole thing took? You might even be able to use a soundcard for this (left channel detects keypress and right channel sees when the event is registered.

But then again, as you already mentioned, would it really matter? If the keypress if obviously registered quicker than I can manually detect (ik click on a button and I immediately see the kepress in notepad or something) would it really influence game play if there even was a difference?
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Re:Ipac Usb Vs, Ps/2
« Reply #63 on: June 17, 2004, 12:42:05 pm »
FWIW, those DIN to mini DIN adapters never worked for me. They always would fall out after a while.
Been using one for years with no problems - anyway,
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but would you buy something that cannot connect to your current computer if a perfectly good alternative exists that will connect (even though your main aim is to connect to an old PC that does have a PS/2 port)?
Well, for probably 85% plus of computer users, their current computer does have a PS/2 port, so the question is "Would you buy a product with a possibly higher performance interface that may be phased out in a few years over a product with a possibly lower performance interface that is likely to be available for quite a while?"  Everyone has to answer that for themselves.
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I doubt we'll ever get to the bottom of this.  :-\
Me too!!!
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To measure the timne from keypress to event in the PC, maybe you could build a testsetup where a scope measures the actuall keypress and then a program switches on a port on a parallel connector when it reads that keypress. Wouldn't that show how long the whole thing took?
Sounds feasible - especially with an encoder instead of a keyboard.  You might be adding additional time to the circuit by routing to the parallel port connector, but as long as that was a constant amount of added time it would cancel out.

The problem is it needs to be done impartially.  If Andy Warne does this and says it works faster in USB, it will be viewed as an attempt to discredit the KeyWiz.  And if RandyT says it works faster in PS/2, it will be viewed as an attempt to discredit the I-PAC.  And I don't think anyone else cares enough to be bothered setting it up.
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But then again, as you already mentioned, would it really matter? If the keypress if obviously registered quicker than I can manually detect (ik click on a button and I immediately see the kepress in notepad or something) would it really influence game play if there even was a difference?
That's another question I would like the answer to!
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Re:Ipac Usb Vs, Ps/2
« Reply #64 on: June 17, 2004, 12:44:15 pm »
Ehm I said 2 to 5 years  (in two years hard to find and in 5 years virtually extinct) that's something different from 5+.

Well, since you are just speculating, and offered a range, I shot high.  The plus was my (and most likely others) opinion of the time frame.  I believe people are allowed by the cosmos to disagree with you.

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If anyone is homing in on meaningless points then it's you. I keep trying to get you back on the big issue, but you keep defending compeletely meaningless examples.

If providing a post outlining the fact that the PS/2 port uses a 6-pin mini-DIN is a "big issue" to you, you need to find more important things to think about.

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Unfortunately you often seem to miss the general point of my messages and you only seem to look for small details to pick on. So I just repeat the points again and let the misunderstandings slide (or at most give a slight hint).

Believe me, there are no misunderstandings about what you are saying, or doing for that matter.

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I like "meaningless" discussions like this, but I do like to keep things on track. I won't react to most of the sidetracking and misinterpretations you post.

Your wheels left the "track" so many times, I'm surprised you are still mobile.

But the fact is, you do react to small things you think you can get a foothold with, and ignore the true issues facing the tech industry as they try to abandon the past.  

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Only personal thing I did was highlight one of your examples. I described how meaningless it was to use exceptions like that as a rule to contradict a general trend.


Actually you are doing just that.  You cite your experiences with your own purchase of a computer and try to pass that off as a "trend".  Yet when I (and others) confront you with the fact that in spite of several year old documents from MS encouraging the demise of the "legacy" systems, major MoBo manufacturers have ignored and still are ignoring this because they fear loss of market share, you dismiss it.  Those, my friend, are "trends".

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I also felt I needed to show how far you stretch the definition to call something a PS/2 device. Instead of understanding those points you actually start defending a 0.00001% market share item as an obvious sign PS/2 is here to stay.

Just another instance of you putting words in my mouth in an attempt to distract from the larger issue and discredit my observations.  It added nothing to the substance of the discussion.

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How about taking on that issue of how you get people to buy into technology that 90% of average consumers don't need, rather than dancing around trying to save face?  Your entire argument hinges on this question.
I don't understand what you mean with this, but my point actually IS that (at least) 90% of the people don't need a PS/2 port on their PC so they won't care if it goes. I'm all for not paying for stuff I don't need.

Then let me try to explain it better.  A wise man once said "necessity is the mother of invention".  It's also the main driving factor of change.  If change is not necessary, it does not occur.  Another wise man said "Change is good. But change solely for the sake of change, is not."

By the time any of this becomes the slightest issue to PC buyers, there will be 6ghz or faster computer systems that will still have PS/2 ports on them.  Sure, maybe no-one will care at that point about PS/2, RS-232 or Parallel ports.  But what practical advantages will this system offer to the average computer buying consumer, that his 2 or 3ghz system (remember, still with the full complement of Legacy I/O ports) doesn't? What is going to drive the industry to completely "legacy free" systems?  What is it that will drive the need for even a 6ghz CPU in that fairly substantial market segment.  You have not answered these questions, because no-one currently has that answer.

Another important thing to consider is that the PS/2, Serial and Parallel ports are usually handled on one large "Super I/O" chip.  Therefore, it's very unlikely that you will see the loss of one without the others as well.  Seeing that each of those have their own dynamic in the marketplace, the picture gets even cloudier.

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Well you are right I did not add anything after my first few posts. But let me sum it up for ya:
1) PS/2 is obsolete (no function demands it's existence for the general public and newer alternatives exist)

Actually it still performs very well today doing exactly what it was designed to do.  In fact, when compared to it's USB counterpart, it's considered superior in a few ways.

Your conclusion is flawed because the foundation provided by your logic is weak.  Using your logic, every piece of hardware in virtually every piece of consumer electronics is "obsolete".  This doesn't support your argument.

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2) PS/2 is virtually solely used for keyboards and mice

And until it stops performing well for these devices, why change?  If you cited economic reasons for MoBo manufactures and OS providers, I might agree with you.  But technologically, there is no argument.

And of course, there are still those Joysticks and industrial devices you love to ignore.

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3) a new PC usually comes with a keyboard and mouse anyway (so the old PS/2 mouse and keyboard can stay with the old one it replaces)

And you know the really funny part about that?  It's pretty difficult to find a system integrator (not darling Compaq or Dell) that even offers a USB keyboard as a configuration option!  Just why is that?

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4) PS/2 is targeted for termination by the hardware and software manufacturers

That is true and Bin Laden is targetted for termination by the U.S Government too, but there are all these pesky extenuating circumstances that have to be taken into consideration.  

The hardware guys are manipulated by the market and the software guys are manipulated by the hardware guys.

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5) I have witnessed PC manufactures drop obsolete standards in a hurry over and over again (I bought a few PC's with a DIN keyboard connector and the next year when I needed one extra I couldn't find one anymore with that connector)

Why were you still looking for a system with that "obsolete" connector on it?  It seems so out of character for you to have done such a thing based on everything you said up to now.   :)

In any case, much of the technology has reached practical saturation levels.  You can't always base the future on the past, especially when it comes to the technology industry.  Look how long the Playstation has remained viable compared to the Genesis.  There's a lesson in there.

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6) I have witnessed that almost all past PS/2 devices are already migrated to USB (in fact the "PS/2" mice and keyboards I bought over the last few years actually need an adapter to connect to PS/2 and are really USB devices)

Actually, if you knew anything about the internals of those devices, you would know that they are dual-interface, not USB.  USB can't automagically speak PS/2 when you hook a piece of green plastic to it's connector.  Much effort went into making that device work the way it does, and those devices do not exist in the majority.  Most are one or the other.

Please define your interpretation of the word "migrated."

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7) I have witnessed the trend that PC's are starting to drop PS/2 ports right now

This is not evidenced by what is shown in the current offerings of every major MoBo manufacturer.  So I have to assume that you are lieing to prove your point, or you haven't witnessed much.  Which shall it be?

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Those seem pretty easy to understand points to me. They are all factual observations and hardly unsubstantial or rhetoric. Of course there is no hard evidence that these points will result in PS/2 going away rather qucikly, but it seems a very likely path.

It's not that I don't understand them, it's that I disagree with what I consider a flawed assessment of current market conditions.  And you are right, there is no "hard" evidence pointing in either direction.

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You on the other hand have claimed that PS/2 will never go away because you (and probably a few other people as well) own some old PS/2 connected devices (other than mice and keyboards) that you would like to keep using in the future and ...

Again, putting words in my mouth.  In the very post you are replying to, I stated "5+ years" as a prediction.  In one breath you consider that the "near future", but now it's "never" ?  Revisit that one when you make up your mind.

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ehm well that was it basically. Well, maybe your remark that PS/2 devices are still sold was meant as[ proof, but then most of them are USB devices at the same time as well.

There is much more being stated here, which you would know if you were actually paying attention instead of just trying to win an argument.  The fact that they are still being sold means that they are not "obsolete" as far as the marketplace is concerned.  And you are still woefully misinformed about the "most of them are USB devices at the same time" statement, as covered earlier.

RandyT
« Last Edit: June 17, 2004, 01:56:33 pm by RandyT »

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Re:Ipac Usb Vs, Ps/2
« Reply #65 on: June 17, 2004, 12:57:03 pm »
But what practical advantages will this system offer to the average computer buying consumer, that his 2 or 3ghz system (remember, still with the full complement of Legacy I/O ports) doesn't?  What is it that will drive the need for even a 6ghz CPU in that fairly substantial market segment.
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Re:Ipac Usb Vs, Ps/2
« Reply #66 on: June 17, 2004, 01:11:21 pm »
But what practical advantages will this system offer to the average computer buying consumer, that his 2 or 3ghz system (remember, still with the full complement of Legacy I/O ports) doesn't?  What is it that will drive the need for even a 6ghz CPU in that fairly substantial market segment.
Cruisin' USA, SF Rush - The Rock, Blitz '99, the by-then emulated Naomi Games  :D

Sorry, couldn't resist!!!!

Good point.  That may still be too slow....;)

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Re:Ipac Usb Vs, Ps/2
« Reply #67 on: June 17, 2004, 01:14:17 pm »
Quote from: RandyT
Good point.  That may still be too slow....;)
[quote
6 GHz should work for Cruisin'.  I think Aaron Giles estimated 20 Ghz for SF Rush, so yep, but the 6Ghz machines will be on different processors, so who knows!
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Re:Ipac Usb Vs, Ps/2
« Reply #68 on: June 17, 2004, 02:45:11 pm »
There are really two distinct computer markets...

1) "Joe Average" consumers

2) computer enthusiasts

I'm certain that most computers targeted at group #1 will not have PS/2 ports at all in about 5 years.  The overwhelming majority of computers sold are to this group and they will dictate where computer designs go in the future.

I have read that new 64 bit computer designs will have an entirely new BIOS design that throws out all the legacy BIOS stuff.  This will probably mean the death of PS/2 ports and you can probably forget about running DOS on them as well.

However, many computers targeted at group #2 will still have PS/2 ports.  In particular, for people who build and upgrade their own systems, motherboards will be made with PS/2 ports as long as people will still buy them.


With that said, all of this will probably be irrelevant for this hobby as many of us use old machines for our mame cabinets that DO have PS/2 ports.  In fact, some of the machines are so old that they DON'T have USB ports!

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Re:Ipac Usb Vs, Ps/2
« Reply #69 on: June 17, 2004, 04:29:32 pm »
Why were you still looking for a system with that "obsolete" connector on it?  It seems so out of character for you to have done such a thing based on everything you said up to now.  
I explained earlier in the thread why that was, but then you only read the details you can give some snide remark on and not the true point I'm making. To help you on your way, I already stated that it was a mistake.

In fact that was the thing that triggered me onto this idea. As I said, the last time I found myself having trouble to find a PC with an obsolete connector I was unable to find one at all a year later already. Of course that was when PC's changed to a better motherboard form factor and not simply that they changed a connector on it, but something similar IS happening right now.
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<snip>
RandyT
Since I ignore misunderstandings and unimportant sidetracking, my reply can be short. I can only be bothered to explain one misunderstanding per post you know.

I guess the point still is that PS/2 will go and it might take 2 years or even to 5 years, but it does make sense not to risk it and thus go for devices that will also be compatible with USB right now. Otherwise you might end up having to dump the device when at some future moment you find yourself with a PC on which it doesn't work. Most cabs are built to last, so they will probably see a new PC in them somewhere in the future. Besides, switching a keyboard encoder is not really a simple matter. You might be still able to find a new motherboard to fix things, but again that's a pain and extra spending.

I think it's smart thinking on Andy's part. It shows he cares about his business and his clients. Better to act on changes as you see them happening than to stick your head in the sand and claim it will never happen.

:edit: I forgot to mention that my original post only was to chime in with JustMichael, that buying the USB cable right away was a smart thing to do. A forum is a place to share personal experiences and I had just experienced that I needed USB support sooner than I thought. I guess you object to the fact that indirectly the KeyWiz is being put in a bad light, but that only came in later when from Tiger-Heli's post I saw a reason why you were so overly agressive in denying that not having a USB option is a bad idea. This thread is about the I-PAC though and the decision to go with USB or not.
« Last Edit: June 17, 2004, 06:29:51 pm by patrickl »
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Re:Ipac Usb Vs, Ps/2
« Reply #70 on: June 17, 2004, 06:32:55 pm »
It shows he cares about his business and his clients. Better to act on changes as you see them happening than to stick your head in the sand and claim it will never happen.

I want to stress something here to anyone with the intestinal fortitude to have followed this thread to this point.  What follows is a personal viewpoint and that viewpoint is not a comment on any individuals products or offerings or intended to make anyone think a certain way about anything.  If you are taking it that way, you are viewing my comments incorrectly.  It is given only as an explanation as to why I do not offer a USB option in defense of insinuations made by patrickl.

The fact that I care is precisely why I don't make a USB encoder.  I want my customers to have the best, most trouble-free experience I can provide to them.

I do not personally feel that USB keyboard technology can provide the level  of performance or compatibility required to be the option of choice when used for this application.  I don't personally want it responsible for the controls on my system,  therefore I will not encourage it's use to others by offering it as an option.  It doesn't get any simpler or more complicated than that.

Does it mean that I will not make a USB controller available when I feel it is absolutely necessary or if there is an application I feel is suited for it?  Of course not.  My apologies to our USB only and Mac friends for not currently offering you a solution and I'm happy you have other options out there.

So say what you want about my commitment to my customers, but there are things my personal beliefs won't allow me to do, even if it means less income for my coffers.  But that's ok, I'll continue to offer other items to the community that will make up the difference.  :)

RandyT

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Re:Ipac Usb Vs, Ps/2
« Reply #71 on: June 17, 2004, 06:55:04 pm »
Now that's a much better approach than trying to ridicule me (allthough I'm sad to see there again is a stab in there). That might even be a believable explanation why you don't have a USB encoder. Though, you could still have it as an add-on. Like with the I-PAC so that when the USB keyboard is implemented "better" they don't need to go through the bother of having to replace their encoder. It's a lot of wires to reconnect if you change one  of those.

Apparently I just edited my post while you posted your reply, but that addition still stands. I'd still advise to go for something that's easily USB compatible now rather than suffer the possible consequences later. Especially since the thread is about the I-PAC and that encoder can be USB compatible if you just spend a little extra.
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Re:Ipac Usb Vs, Ps/2
« Reply #72 on: June 17, 2004, 09:41:20 pm »
...First off, I would like to question how much of an issue this could possibly be?

For example, I doubt I could mash a button more than 4 or 5 times a second, but lets give me the benefit of the doubt and say that I can hit 10 presses per second......

4 players, all moving and all punch/kick/jump at the same time = 8.  Not common but likely/possible for those of us with 4 player cabs and 3 friends. ;)

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Re:Ipac Usb Vs, Ps/2
« Reply #73 on: September 25, 2004, 02:35:28 am »
holy crap, I can't believe I just wasted a half hour of my life reading all this.

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Re:Ipac Usb Vs, Ps/2
« Reply #74 on: September 25, 2004, 01:00:34 pm »
holy crap, I can't believe I just wasted a half hour of my life reading all this.

holy crap, I can't believe you bumped this thread just to say that.
first off your and idiot

Man I love the internet, haha.

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Re:Ipac Usb Vs, Ps/2
« Reply #75 on: September 26, 2004, 03:09:13 am »
It was a very valuable portion of my life. That's a whole trip to Lowe's right there. hahaha

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Re: Ipac Usb Vs, Ps/2
« Reply #76 on: November 02, 2009, 12:59:31 pm »
Wow.  So much information on the deep technical level.  I am a noob that just wants to know what to buy as I'm sure was the question of the original post.  So after reading all posts on this topic I have a few basic questions.  1. If you order the IPAC2 board with USB does it come with a USB cable and USB connectors on the board at the PC and KB locations?  or are there PS/2 connectors here and you just get a USB cable with a USB-PS/2 adaptor with it?  I want to build my first CP with a trackball and spinner wired to an Optipac board and 2 ea. 4-8 way switchable Mag-Stik joysticks and 20 buttons wired to an IPAC2.  I think with this set up I can play most all games with the basic hardware that came with the original game except the racing games.  If the USB version works just fine and we're only talking $4 more then why not get USB? 

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Re: Ipac Usb Vs, Ps/2
« Reply #77 on: November 02, 2009, 01:17:02 pm »

You do realize that you just bumped a 5 year old post  :D?

Much has changed since those days.  Well, except that the doom and gloom spreaders predicting the imminent demise of the PS/2 port are now shown to have been incorrect, as I predicted they would be so long ago.  :cheers:

You should start a new thread (or find a more recent one) for your questions.  The info here is mostly outdated.

RandyT

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Re: Ipac Usb Vs, Ps/2
« Reply #78 on: November 02, 2009, 01:20:24 pm »
OK.  Thanks.  Wow 5  years old.  Where have I been

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Re: Ipac Usb Vs, Ps/2
« Reply #79 on: November 02, 2009, 01:30:30 pm »
To further bump an old thread - you can't go wrong with either a Keywiz or Ipac. I have both, and am satisfied with each one. Just go to their websites, compare features and price, then buy. No matter which one you choose, you will not be disappointed.