A590 with SCSI2SD - checksum errors

[lioneer]

I tried to change old SCSI disk with SCSI2SD adapter in external A590. AutoBoot is working with kickstart 1.3, but i get checksum errors. Where is problem? SCSI2SD is rev.5 with default setup, Amiga is A1000. Thank you

[Leon Besson]

Originally Posted by lioneer

I tried to change old SCSI disk with SCSI2SD adapter in external A590. AutoBoot is working with kickstart 1.3, but i get checksum errors. Where is problem? SCSI2SD is rev.5 with default setup, Amiga is A1000. Thank you

So when you got the SCSI2SD drive you have set it up with the SD card using a PC first?

I.e you have used the software to setup the card to either 1 or more LUns?

Also when you setup the SD card, say a 16GB you have set this up as 14.9GB NOT 16GB as the card is not truly 16GB?

[lioneer]

yes, i used scsi2sd in my Amiga2000 without problems. I have 2GB SD card (in setup set to 1.87GB).

[Leon Besson]

Originally Posted by lioneer

yes, i used scsi2sd in my Amiga2000 without problems. I have 2GB SD card (in setup set to 1.87GB).

So the other things to check is the firmware and make sure you play around with the settings on SCSI2SD.

Worth watching these videos just in case it helps;

[ Show youtube player ]


[ Show youtube player ]

[lioneer]

Sooo, i found a solution. Problem was with bad mask and max transfer. Now its everything good. A590 with scsi2sd works fine in A1000 or A500
There was no problem with scsi2sd configuration. But thank you for your help and interest.

[Jope]

Out of interest, what did you set your maxtransfer to? I wasn't aware of limitations related to that in the SCSI2SD.

[Leon Besson]

Originally Posted by Jope

Out of interest, what did you set your maxtransfer to? I wasn't aware of limitations related to that in the SCSI2SD.

I always use the 0x1fe00 max transfer on mine.

PFS filesystem as well.

[alexh]

Originally Posted by Leon Besson

I always use the 0x1fe00 max transfer on mine. PFS filesystem as well.

A max transfer that small is only necessary on IDE interfaces. (there is a technical reason, it's written up on this forum)

Performance will be better with a larger max transfer on SCSI interfaces if the drive supports it.

[patrik]

Originally Posted by alexh

A max transfer that small is only necessary on IDE interfaces. (there is a technical reason, it's written up on this forum)

Performance will be better with a larger max transfer on SCSI interfaces if the drive supports it.

When the interface device driver relies on ATA1-specific features for large transfers, which are removed/change behavior in ATA2+.

[alexh]

Originally Posted by patrik

When the interface device driver relies on ATA1-specific features for large transfers, which are removed/change behavior in ATA2+.

Yup. http://eab.abime.net/showpost.php?p=759918&postcount=25

[patrik]

With “256 bytes”, Toni means “256 blocks” if anyone wonders.

[Leon Besson]

Originally Posted by alexh

A max transfer that small is only necessary on IDE interfaces. (there is a technical reason, it's written up on this forum)

Performance will be better with a larger max transfer on SCSI interfaces if the drive supports it.

If anyone wants more info on what Alexh is referring too I’ve created a new thread here about it;

http://eab.abime.net/showthread.php?t=110070