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Offline bloodline

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Re: Raspberry PI
« Reply #29 from previous page: May 21, 2012, 01:55:57 PM »
Quote from: JJ;693579
Mine turned up this morning.
 
If anyone is interested will post later my thoughts once got it up and running
Lucky sod! Mine is due for delivery mid June... I have an HDMI cable, and SD Card and an micro USB charger all ready for it!!!
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Offline bloodline

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Re: Raspberry PI
« Reply #30 on: May 21, 2012, 07:38:45 PM »
Hey JJ, your Pi has the 26pin GPIO header... Do you plan to use it?
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Offline jjTopic starter

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Re: Raspberry PI
« Reply #31 on: May 21, 2012, 09:44:55 PM »
Quote from: bloodline;693833
Hey JJ, your Pi has the 26pin GPIO header... Do you plan to use it?


had no plans to, to be honest.   Not my field of interest.  Are they not all going to have them then ?
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Offline bloodline

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Re: Raspberry PI
« Reply #32 on: May 21, 2012, 10:47:54 PM »
Quote from: JJ;693844
had no plans to, to be honest.   Not my field of interest.  Are they not all going to have them then ?
When the boards were going to be self produced, only the first 10,000 would have the GPIO headers... Now RS and farnell are manufacturing I don't know... I'm hoping my Pi will have the header as I want to play with it :)
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Offline nyteschayde

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Re: Raspberry PI
« Reply #33 on: May 29, 2012, 06:49:44 AM »
What would be the fastest I/O for data between an Amiga and the PI? It seems like it's still the unanswered question I come to when I consider any microcontroller or mini-computer such as the PI.

I'd like to leverage the power of the PI in conjunction with an old Amiga somehow? Anybody have any ideas?

Would it be like a PCMCIA<->GPIO adapter or perhaps a trapdoor edge connector <-> GPIO? I've also considered the clock port but I haven't been impressed with what I've seen with the Subway USB speeds.

Let's brain storm!

Quote from: bloodline;693847
When the boards were going to be self produced, only the first 10,000 would have the GPIO headers... Now RS and farnell are manufacturing I don't know... I'm hoping my Pi will have the header as I want to play with it :)
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Offline TheDaddy

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Re: Raspberry PI
« Reply #34 on: May 29, 2012, 07:03:08 AM »
mmmh...my raspberry arrived, installed the Linux image from website and the USB mouse is not recognised...argh! :(
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Offline nyteschayde

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Re: Raspberry PI
« Reply #35 on: May 29, 2012, 07:09:59 AM »
Make sure you have enough power. Seems that is the most common issue I've heard with the PI. Mine still hasn't arrived so I can't say from experience though.

Quote from: TheDaddy;694532
mmmh...my raspberry arrived, installed the Linux image from website and the USB mouse is not recognised...argh! :(
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Offline TheDaddy

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Re: Raspberry PI
« Reply #36 on: May 29, 2012, 07:21:50 AM »
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Offline nyteschayde

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Re: Raspberry PI
« Reply #37 on: May 29, 2012, 07:27:02 AM »
You could try running the mouse through a powered hub and see if that is the issue after all.

Quote from: TheDaddy;694536
Got myself one of these:

http://www.ebay.co.uk/itm/Micro-USB-Power-Supply-For-Raspberry-Pi-Computer?item=330730087675&cmd=ViewItem&_trksid=p5197.m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D5%26po%3DLVI%26ps%3D63%26clkid%3D8751643704345737842#ht_1221wt_1397

And the USB mouse does not work. Tried another one and still the same. Bah!
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Offline TheDaddy

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Re: Raspberry PI
« Reply #38 on: May 29, 2012, 07:42:40 AM »
Quote from: nyteschayde;694538
You could try running the mouse through a powered hub and see if that is the issue after all.


If it works via the powered USB then it means that the psu is pants?
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Offline nyteschayde

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Re: Raspberry PI
« Reply #39 on: May 29, 2012, 07:44:07 AM »
Not necessarily but I've heard everything from the leads, the contacts, the sometimes even the day of the week (jk) dropping a tenth of a volt and causing things to not function.

Quote from: TheDaddy;694542
If it works via the powered USB then it means that the psu is pants?
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Offline TheDaddy

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Re: Raspberry PI
« Reply #40 on: May 29, 2012, 07:51:44 AM »
:)

I AM really impressed...worth the money! :D
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Offline nyteschayde

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Re: Raspberry PI
« Reply #41 on: May 29, 2012, 07:55:34 AM »
I take it the powered hub worked?

Quote from: TheDaddy;694544
:)

I AM really impressed...worth the money! :D
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Offline TheDaddy

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Re: Raspberry PI
« Reply #42 on: May 29, 2012, 07:56:44 AM »
Nope I haven't got one I'll have to do that at work...I'll let you know, thanks for the suggestions. :)
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Offline brownb2

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Re: Raspberry PI
« Reply #43 on: May 29, 2012, 01:46:26 PM »
Slightly O/T.

Can the PI be rigged as an accelerator?

What's to stop somebody wiring up the accelerator port in an A1200 to the Pi via USB  (or faster bus - obviously may need some sort of breadboard inbetween) and passing the instructions to an ARM 68000 series emulator such as http://notaz.gp2x.de/cyclone.php (this emulator is 68000 only)?

Obviously FPGAs are better for the purpose but technically I can't see too much trouble apart from:

  • Conversion between the trapdoor connector to USB serial will likely need custom PIC work.
  • Custom software glue to pass the USB instructions ARM side to the relevant emulator API and return results.
  • Emulator may need modification for access to the Amiga chipset and chip ram, as opposed to ARM ram,  via USB :(
It may be a tad slow... and now I've written this post probably complicated.
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Offline nyteschayde

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Re: Raspberry PI
« Reply #44 on: May 29, 2012, 05:21:35 PM »
That or using the PI like a bridge board or how about as a video card? All these things have crossed my mind. I'm a software dev and love to sit down with a good hardware dev for a day or two to know more about things like PICs and working with and wiring up a GPIO.

Quote from: brownb2;694581
Slightly O/T.

Can the PI be rigged as an accelerator?

What's to stop somebody wiring up the accelerator port in an A1200 to the Pi via USB  (or faster bus - obviously may need some sort of breadboard inbetween) and passing the instructions to an ARM 68000 series emulator such as http://notaz.gp2x.de/cyclone.php (this emulator is 68000 only)?

Obviously FPGAs are better for the purpose but technically I can't see too much trouble apart from:

  • Conversion between the trapdoor connector to USB serial will likely need custom PIC work.
  • Custom software glue to pass the USB instructions ARM side to the relevant emulator API and return results.
  • Emulator may need modification for access to the Amiga chipset and chip ram, as opposed to ARM ram,  via USB :(

 It may be a tad slow... and now I've written this post probably complicated.
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