Hello,
Actually, there shouldn't be a perceivable difference between the
serial connection and the USB connection with respect to bandwidth.
The amount of data that is sent, even with force feedback enabled, is
nowhere near the limits of a serial port.
If you are interested in the technical details, read on.
The max bandwidth for USB 1.0 protocol is 1.5 Mbps. This is shared by
all the devices daisy chained on the USB port.
The bandwidth on serial port (typically used) is 19.2 Kbps.
Each button on a game controller uses only 1 bit. Each axis uses
either 8 bits or 10 bits. Say you have 32 button controller with 4
axes. You would only be using 72 bits.
The packet size that is polled is typically limited by 64 bytes. That
leaves TONS of headroom on either USB or Serial.
Even if you take into account polling intervals, there is no advantage
of USB over serial. In fact, a serial connection could potentially
have a faster polling interval than USB (1.0).
Raymond
ACT LABS
www.act-labs.com
On Thu, 22 Jun 2000 16:28:07 +0200, "Excidium"
<[email hidden]> wrote:
I've had my wheel for a little over a month now and have tried both USB and
serial. To me there is no difference.
Dave
I just got my new Ferrari FF wheel.
Is there a difference in performance between using the USB or the serial
connector?
Thanks
Well USB has a higher bandwith and that can result in higher more stable
framerates, so if you have th option: use your USB, it's better...
"Karl Zosel" <[email hidden]> wrote in message
news:6wj45.32484$[email hidden]...
Quoted text (7 lines)
> I just got my new Ferrari FF wheel. > Is there a difference in performance between using the USB or the serial > connector? > > Thanks > >On Thu, 22 Jun 2000 22:13:26 -0400, "David Phillips" <[email hidden]>
thus spoke:
>I've had my wheel for a little over a month now and have tried both USB and
>serial. To me there is no difference.
>
>Dave
>
>So long as you have a good game port. I swtiched to USB because it
solved all my previous problems with crap gameports on soundcards that
didn't supply the standard 5v.
--
Nos
thus spoke:
So long as you have a good game port. I swtiched to USB because it
solved all my previous problems with ***gameports on soundcards that
didn't supply the standard 5v.
--
Nos
Hello,
The gameport is not really an issue here as we are comparing the USB
to serial connection. However, the gameport definitely has its
shortcomings when it comes to game controllers.
Raymond
ACT LABS
On Fri, 23 Jun 2000 04:36:40 GMT, [email hidden] wrote:
