Oktagon 2008 SCSI Issues....

[DiskChris]

So I started having issues read write errors with my hard drive a couple months ago and while at first I thought it was the drive, I've tried 3 different ones in the computer (all test fine with a badblocks test under linux using the same cable and hooked to the amigas power supply) so I removed the eeprom...

Under 2.0 with Oktapussy: Everything's fine (but I need compatibility with 1.3 so it won't work )

Under 1.3 with original software driver: Hard drive shows up reduntantly 8 times in HDInst, HD read errors

It sounds to me like a termination problem...but if it was, then why would it work fine with oktapussy??

EDIT: I've also done a RAM test with MemCheck...everything's fine

[DiskChris]

Alright found out the problem only occurs when copying a file directly from the serial port (AExplorer) to the hard drive...I can copy a large (eg 4 MB file) directly to RAM and then copy that file to the hard drive fine...perhaps the serial port and the PIO interface is just too much for the 68000 to handle?? The odd thing is that using oktapussy everything's fine, and even turning the baud rate down to ridiculously slow speeds, eg 4800 buad, doesn't help....

[DiskChris]

Yeah but Some files exceed 4 MB on size and I do have an a500 on hand I can swap parts with...maybe the CIAs??

[DiskChris]

Yeah checked MaxTransfer....and looks like I spoke too soon altough the files transfered from ram to the hard drive are the same size, they are corrupted....at least I discovered that before I started ripping out chips:roflmao:

[DiskChris]

Asynchronus mode did the trick! You sir are a saint, saved me from buying another controller! I had to disable parity check on the controller too through HDInstTools included in the Install disk (which also has the Oktagon driver you put in your expansion folder if you don't have the autoboot rom) and incase anyone else is wondering, here's my Mask & MaxTransfer:

Mask: 0x7FFFFFFC
MaxTransfer: 0x0001FE00