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Author Topic: FS: ACARD AEC-7720U SCSI - IDE Bridge  (Read 1943 times)

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Offline Boot_WBTopic starter

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FS: ACARD AEC-7720U SCSI - IDE Bridge
« on: April 28, 2008, 10:25:02 PM »
This plugs into the back of any IDE drive (Hard drive, CD RW, DVD RW, etc) and allows you to connect it to a scsi bus, as if it were a scsi device. This is the 50-pin version (operates at 20MB/s speeds) - perfect for a blizzard PPC scsi chain, and I'll include a 68-50 pin adapter to allow you to use it on a CSPPC scsi chain.

Great way to connect top speed IDE devices to your SCSI bus. Another advantage is that, should your SCSI CDRW start playing up, it is much cheaper, easier and more reliable to replace it with a new IDE device than to hunt around trying to find an (increasingly rare) SCSI replacement.

I've been using it with a CDRW/DVDRW combi device on my CSPPC. I have two, so am getting rid of this one.

Price - £25 including UK shipping.
Includes the bridge, still boxed and with instructions. Also includes a 68-50 pin adapter.
Mac Mini G4 (1.5GHz, 64MB VRam, 1GB Ram): MorphOS 3.6
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Offline Boot_WBTopic starter

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Re: FS: ACARD AEC-7720U SCSI - IDE Bridge
« Reply #1 on: April 28, 2008, 10:44:07 PM »
I should also note that, as it is an Ultra scsi device (operating at 20MHz), it would not slow down the operation of a CSPPC or mk3 scsi bus. As long as it is installed on the end of the bus that is.

The only reason it is limited to 20MB/s (as opposed to 40MB/s of the UW bus) is that it is narrow - only allowing 1 byte width of data per cycle as opposed to 2 bytes width of the wide devices. As long as the upper byte is terminated (which I believe the adapter does - I've had no problems with data loss or scsi lockups whilst using it), the remaining devices on the bus will still operate at their 2-byte width (40MB/s).
Mac Mini G4 (1.5GHz, 64MB VRam, 1GB Ram): MorphOS 3.6
Powerbook 5.8 (15", 1.67GHz, 128MB VRam, 1GB Ram): MorphOS 3.8.

Windows-free since 2011-2014 (Damn you Netflix!)
 

Offline A4000_Mad

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Re: FS: ACARD AEC-7720U SCSI - IDE Bridge
« Reply #2 on: April 28, 2008, 10:49:31 PM »
@ Boot_WB

I'll buy that so as to be able to use IDE HDD's on my CSPPC :-)

PM on the way :pint:
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Offline Boot_WBTopic starter

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Re: FS: ACARD AEC-7720U SCSI - IDE Bridge
« Reply #3 on: April 28, 2008, 10:57:18 PM »
Sold to A4000_Mad.

Thanks matey, I'll post it to you ASAP.

Regards



Rich
Mac Mini G4 (1.5GHz, 64MB VRam, 1GB Ram): MorphOS 3.6
Powerbook 5.8 (15", 1.67GHz, 128MB VRam, 1GB Ram): MorphOS 3.8.

Windows-free since 2011-2014 (Damn you Netflix!)