15 October 2014, 21:45 | #21 |
Ruler of the Universe
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This is great stuff, congrats . A pity I don't have the money now.
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15 October 2014, 21:59 | #22 |
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Looks like a lot of work has gone into this.
What sort of transfer rates will we seen on the clock port version on a 030 @ 50mhz? Thanks |
15 October 2014, 22:24 | #23 | |
electricky.
Join Date: Jun 2010
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Yep - especially the clockport reliability was tricky to reach.
Quote:
On an A600 with ACA620 (16.67MHz) and RapidRoad connected to the riser card of the A604n, you get 730k/s. If the ACA620 is overclocked to 25MHz, you get 852k/s, and if you have an ACA630 with 25MHz, you get 876k/second. Note that the clockport of the A1200 is really slow. The clockport of the riser card of the A604n is a little bit faster, which is why you get better performance, even though the CPU is not all that fast. Jens |
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15 October 2014, 22:50 | #24 |
Amiga freak
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Great work Jens!! Looks like an interesting product for my A1200 and A600...
I like to see a video of this product in action inside an A1200 or A600 and see where the cables are.. These video's will probably show up soon Maybe a stupid question but are there some limitations with certain types of storage-devices? Will any mass-storage device work? Usb-sticks? Do I need a self-powered device or use a usb-hub which has it's own power? |
16 October 2014, 10:22 | #25 | ||
electricky.
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Quote:
Quote:
Example: I have a gift from one of the Commodore incarnations, a "PET 128MB". That's a very early USB stick that came with a driver CD. I did have success with this stick on an old Win98SE computer with that CD, but on no other computer; neither Win32-versions, nor under Linux. With Poseidon, the "Pet128MB" stick with the Commodore label works fine. Power-wise, RapidRoad uses a very sturdy USB power switch: 1.5 Amps per port. That's three times the specified power, and that's "per port", so if your power supply can handle it, you can power fairly old 2.5" USB harddrives with RapidRoad. I would still recommend a powered USB hub if you want to connect lots of devices at the same time. I need to buy a USB sound card, because yesterday night, I got an update to Poseidon that also supports USB audio. So far, it has only been tested on a clockport with just 48kHz 16 Bit AHI replay - recording isn't tested yet. Only two realtime streams are supported, so you can record and playback at the same time, but no webcam during that session. Trouble: Amiga is not a realtime system. If multitasking is interrupted for more than 7ms, audio will stutter. Some SCSI controllers may actually cause such a stutter, including the A3000 onboard-SCSI controller. Jens |
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16 October 2014, 10:45 | #26 | |
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Quote:
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17 October 2014, 11:05 | #27 | |
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Quote:
That's really interesting. I always had the impression that USB sound cards were really usable on a DENEB because of the ZorroIII interface. Clockport's bandwidth is much much slower than ZIII. Is there any chance that the stutter you experience is because of the limitations of the clockport's bandwidth? Because if that't the case I can hardly see any way to overcome this. |
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17 October 2014, 11:38 | #28 | |
electricky.
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Quote:
Also, don't get me wrong: We're not experiencing stutter on the clockport. It works fine on the clockport at the programmer's site, using a B1260. It has not been tested on the X-Surf-100 yet. That's only because I don't have a USB sound card - yet. It should arrive today. Still, on slower Amigas, the 7ms minimum time between data chunks to be moved to/from the sound card may be a dealbreaker. If a SCSI DMA transfer is running during that time, Poseidon *may* pick up data too late (or send it too late), resulting in stuttering audio. Note that this is merely a possibility, not an observation. I'm trying to tell everyone that this is not yet tested. Jens |
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17 October 2014, 11:40 | #29 | |
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I've found some info here http://www.amiga.org/forums/showthread.php?t=50506
like this: Quote:
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17 October 2014, 12:31 | #30 |
R.I.P Smudge 18-08-16
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I was just wondering why it needs a 68020 or better, is it just CPU power or some instruction set required?
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17 October 2014, 12:33 | #31 |
Professional slacker!
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It's the USB stack, it only runs on 020+
It's quite slow on an 020 (better 030/040/060 to be honest anyway) There is a USB stack for 68000 CPU's but I don't know if it will work with the Rapid, doubt it. I forget the name of the stack though. It's quite basic compared to Poseiden though. |
17 October 2014, 13:04 | #32 |
R.I.P Smudge 18-08-16
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Do you mean the ANAIIS USB Stack?
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17 October 2014, 13:28 | #33 |
Professional slacker!
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17 October 2014, 14:43 | #34 | |
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Quote:
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17 October 2014, 14:50 | #35 | |
electricky.
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Quote:
http://wiki.icomp.de/wiki/USB_module Jens |
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17 October 2014, 16:37 | #36 | |
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Quote:
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18 October 2014, 11:28 | #37 | |
0ld0r Git
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Quote:
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18 October 2014, 12:34 | #38 | |
electricky.
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Quote:
Jens |
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18 October 2014, 13:26 | #39 | |
0ld0r Git
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Quote:
All the best Jens & Thank You. |
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18 October 2014, 13:39 | #40 |
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I've just ordered mine
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