Quote:

+ sata drives are the faster available

the only difference between ATA and SATA drive is the electronic plate attached on it... (for a given model) so both have exactly the same speed.... I even changed myself electronic plates on 2 maxtor Diamondmaxplus 9 drives one hard drive was ATA 133 other was SATA....
Moreover I have a maxtor Atlas 10K IV SCSI hard drive, and it's hell faster than my SATA drives..
(around 77MB/second sustained rate at the end of the plates)


Quote:

I've heard of future SCSI drives with SATA connectors and compatibility with sata ?

Western Digital Raptor... but it's the same price than a SCSI drive
http://www.westerndigital.com/en/products/Products.asp?DriveID=65

and the problem with SATA wires is that they move too much easily, especially the power one... vibrations are sufficient to misplug a drive

SCSI rulez

@amiga-one: rock on me laddo! !

maybe its time for some usb printer/scanner stuff now? or maybe Firewire?

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@tjaoz

Max _theoretical_ transfer rates. BIG difference. Don't expect much more than 100MB/s from regular PCI

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@falcon1

"+ sata drives are the faster available"
there are not so much difference in performance but bigger and faster drives are coming
in sata , it's the evolution not that pata can't handle the bandwidth , but innovation is for
the new standard .
With sata the amigans don't have to search for the oldest compatible hardware , like
a voodoo gfx card , the drives are in store .

-7200rpm drives (most times ) can't beat 10 000 rpm ones . no news
But i agree that SCSI is better , but not affordable ......(for now )


"I've heard of future SCSI drives with SATA connectors and compatibility with sata ?"
I was talking about that
serial attached scsi

and the roadmap

and this
"SATA probably will lead SAS (see "SAS Appeal," right) by a wide margin because SATA II offers more SCSI-like features, such as command queueing and hot-swapping. On the other hand, SAS controllers more likely will find their way into general use because they can support SATA drives." from elecdesign

cheap SCSI for the future

@KimmoK

Quote:

Can SATA devices transfer data directly between each other?

No. There's no point to such a facility because data coming off the hard drive must be processed by the filesystem, so it has to go through the CPU to be of any use.

Quote:

You know, untill AGP2x is really needed, one could use SATA cards on the 266M/sec PCI slot #4

The Sil3112 chip is capable of working on a 66MHz PCI bus, but the card may not work because the 66MHz slot on the A1 isn't realy a PCI-66 slot. It violates the PCI specification in a fairly dramatic way and Mai/Eyetech could get into legal hot water for using the PCI acronym in connection with it.

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Quote:

You know, untill AGP2x is really needed, one could use SATA cards on the 266M/sec PCI slot #4... Using the second MAIN ADVANTAGE OVER PEG2

It's a very bad idea to put a disk controller on the PCI slot which share the same IRQ that the graphic card.... same on PC never connect a network, sound or diskI/O controller on the this slot (usually the on just below the AGP slot.

FYI on peg2, the AGP and PCI slots are located on 2 separate PCI controllers....
on A1 and on PCs, AGP and PCI are on 2 separated BUS located on a unique PCI controller..

@falcon1
"It's a very bad idea to put a disk controller on the PCI slot which share the same IRQ that the graphic card.... same on PC never connect a network, sound or diskI/O controller on the this slot (usually the on just below the AGP slot."



Well.... use PCI Radeon7000 instead of GFX card.

Ok, ok.

"FYI on peg2, the AGP and PCI slots are located on 2 separate PCI controllers...."

Marvell Discovery has two integrated PCI controllers?

What kind of advantage (if any) peg2 gets out of that arrangement?

(if there would be any advantage, the same thing would exist in x86 world, I think)

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_________________
- KimmoK
// For freedom, for honor, for AMIGA
//
// Thing that I should find more time for: CC64 - 64bit Community Computer?

@DrBombcrater

"and Mai/Eyetech could get into legal hot water for using the PCI acronym in connection with it."

But still they do so !

Is there ANY practicall use for the PCI slot #4 then ????
PCI GFX card if some stone-age card is R E A L L Y needed ?

Last edited by KimmoK on 01-Nov-2004 at 06:47 PM.

_________________
- KimmoK
// For freedom, for honor, for AMIGA
//
// Thing that I should find more time for: CC64 - 64bit Community Computer?

I am a SCSI guy all the way. There are more expensive and harder to find but so does my Amiga and my Macintosh. I've never felt uncomfortable going with the 0.00001% of the market, that's why I am still here . New Amigas serve a different purpose and are made to run on ATA almost exclusively but I would be a happy man if I had an OS4 system on a Seagate Savvio.

@Intuitioned

Some SATA 150 implementations are integrated within southbridge may not be limited with traditional PCI limitations e.g. nForce3 250's SATA. NV Gigabit Nic is able operate 128MB/s at full duplex (256MB/s). GA-K8NNXP (nForce3 150)'s Sil 3512 is 66Mhz enabled PCI device. Integrated devices are supported via nForce3 MCP?s 8GB/s(2GB/s for AGP) connection to CPU.

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Amiga 500 (Rev 6A, KS 3.2, PiStorm/RPi 3a/Emu68)

@falcon1
About the PC...

NVIDIA?s MCP (X86 PC) has following bus setup i.e.
MCP has 3 separate buses i.e. AGP, PCI-0, PCI-1(e.g. Gigabyte 7N400Pro2, K8NNXP Ltd Ed)
MCP-T has 4 separate buses i.e. AGP, PCI-0, PCI-2, PCI-2 (e.g. ASUS A7N8X Deluxe)

Notes...
AGP8X, Graphics adapter, 2GB/s (SPP for nForce2, MCP/AGP tunnel for nForce3).
PCI-0, ussually integrated NV devices (e.g. PATA 133, SATA 150, 100/1000Mbit NIC).
PCI-1, ussually Sil SATA 150 (66Mhz enabled in K8NNXP) and other PCI devices.
PCI-2, reserve for high end MCP southbridge i.e. ASUS A78N8X Deluxe (2nd NIC)

Aggregated MCP bandwidth exceeds PCI-66 bandwidth i.e. up to 8GB/s connection to the CPU (4GB/s full dulpex) for nForce3 MCP 250. NVIDIA?s Streamthru (connected to hypertransport) provides sufficient bandwidth backbone for these separate buses.

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_________________
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Amiga 500 (Rev 6A, KS 3.2, PiStorm/RPi 3a/Emu68)

@KimmoK
Quote:

(if there would be any advantage, the same thing would exist in x86 world, I think)

(Side track) NVIDIA?s nForce2 and nForce3 would be one example e.g.
AGP, PCI-0, PCI-1, PCI-2 (only in high end MCP) separated buses.

Did you ever consider why the latest X86 Northbridge and Southbridge links are increasing in bandwidth (beyond PCI's 133MB/s backbone)?

_________________
Ryzen 9 7900X, DDR5-6000 64 GB RAM, GeForce RTX 4080 16 GB
Amiga 1200 (Rev 1D1, KS 3.2, PiStorm32lite/RPi 4B 4GB/Emu68)
Amiga 500 (Rev 6A, KS 3.2, PiStorm/RPi 3a/Emu68)

@hammer

your answer is absolutely off topic from what i told :)

I perfectly know some PCi controllers have more than One PCI BUS...
that doesn't exclude the fact that the PCI slot under the AGPone usually share the same IRQ than the AGP slot.

I also said that peg 2 has 2 PCI controllers, each one having its own bus
this configuration caused some problems in early linux kernels as usually computer only have one PCI controller... so under linux you have /dev/pci//
but if you have 2 controllers, you'll have 2 bus number 0 !! (of course, today, this problem is solved :)

that's all...