the only cf drive i got to work with the acard was a startech ide to cf it has jumpers on there that you can remove for the dma
but it worked with the jumper for dma anywaywhere as the emax uses an older version
the iodata scsi to ide cards do have jumpers for setting the dma or pio mode but they never worked with the emax either
On 21 July 2014 18:39, Ted Summers djtbs1@... [emax] <emax@yahoogroups.com> wrote:
I can neither confirm nor explicitly discredit your assumption regards the firmware.Regards DMA---
SCSI 1 (and possibly SCSI 2) do not use DMA, it predates DMA bus mastering topology.
Therefore, the ACARD is not going to have DMA capability or any way to enable or disable it.
If you have concern whether the SCSI is working at all, you could get a SCSI Internal Zip.
Set to ID 0- as a test it shouldn't be too expensive and we would expect that at the end of this test, the Zip is formatted successfully from a non-PLUS OS.Regards Firmware---Acard support site is currently offline, preventing me from validating your firmware version assertions.
Usually in my troubleshooting techniques I assume something doesn't work / not working properly as opposed to assuming it does / should work until I have proven otherwise.When I first got my bridge(s) they did not work, I got the kind of errors you describe.
I had 6 bridges (4 x 7722) which I sold for use with ATAPI zip drives) and (2x 7220UW).
I updated the firmware to latest for the correct PCB version (what I have now) and tested it in my Emax 1 and 2... and one of them has been working in my Emax 2 ever since.
The rest I have sold, but did not have any return to me.Suggestions-Have you tried using an old IDE HD with the bridge instead of the CF adapter, or even an IDE/ATAPI Zip (common and cheap- I can find them for like $5)?
This is a test I have done and verified with my bridges.
I would do a test with this config for the bridge.- Get an 500MB or smaller IDE drive (smallest you can find from a reuse shop or something) or IDE Zip drive and test bridge with that.
Part of the problem here is you are basically troubleshooting multiple items with unknown state / and or compatibility all at one time.The bridge could be fine, but the CF adapters may not be.
The bridge could have an issue, but the CF adapter could work fine.It's easier to troubleshoot when you can break it down to 1 unknown variable in the chain....-TOn Mon, Jul 21, 2014 at 8:10 AM, xeelox@... [emax] <emax@yahoogroups.com> wrote:
Ted, I will assume for the time being that the 6.89 firmware on your board REV ??? should be reasonably comparable to my REV 3.1 board running 3.89 and that my Emax should likely be able to communicate with 3.89 unless someone can confirm otherwise.
I Tested the Addonics ADIDECF Adapter WITHOUT the DMA jumper set, but Emax 1 still gives the HD Error.The generic looking Hexin HXSP-2108P CF Adapter I got has no DMA jumper, though specs say it does support DMA but I don't know if it's possible to disable. Users in the eiii forums reported this card as working for them but so far it doesn't work for me.
Q: Is there a way to disable DMA from the Acard 7720U?
The Acard activity LED does NOT light up when connected to Emax and I attempt to format the CF. I would expect this to behave like it does in Windows - i.e.the activity LEDs light on both the bridge & the CF reader when reading/writing.
Q: Since neither the bridge nor CF adapter LED lights up and the bridge is first in the chain, do you suspect the Emax is not sending commands to the Acard? Or is the Acard not able interpret the Emax SCSI commands?
Thanks,Jim