pen@lysator.liu.se (Peter Eriksson) (08/26/90)
I'm having severe problems trying to connect a Hitachi DK511-8 winchester disk one of our computers, a Sequent Balance 8000. When I try to connect it to the computer via the internal Adaptec ACB5500 controller, I can't even format it. I get partial success using an Adaptec ACD4000 (that I think isn't really SCSI, but rather SASI), but when I try to run the "seek" test program I only get a _lot_ of "check sense" errors. (And when I try to make a file system on the disk, the SCSI bus dies...). I *think* that the disk has a ST-412 interface but I'm not really sure. And no - I don't have _any_ documentation at all about these disk controllers. If anyone has some information about these that could be emailed to me I'd be very grateful. I especially could use some information about the set of eight jumpers (I have figured out how to set the SCSI ID using three of these, but I haven't got the faintest idea of what the rest of them are. When I tried to set the ones on the ACB4000 controller the same way that they are on the ACB5500, the controller refused to work. /Peter -- Peter Eriksson pen@lysator.liu.se Lysator Computer Club ...!uunet!lysator.liu.se!pen University of Linkoping, Sweden "Seize the day!"
eric@ultima.socs.uts.edu.au (Eric Lindsay) (09/11/90)
Adaptec jumpers (according to the manual, which I bought from Computer Surplus Store in California - they advertise regularly in Computer Shopper) are as follows. Installed means bit = 1 or enabled. Jumper Position 4000 5500 A-B LSB of SCSI address SCSI reset option C-D SCSI address Reserved E-F MSB of address Hard sectored LUN0 G-H DMA rate (sysclock/4) Hard sectored LUN1 i-J Extended command set Reserved K-L Not used Diagnostic mode M-N Syquest 312 support Parity enable O-P Self diagnostics SCSI address 2^2 R-PU Write Precom off SCSI 2^1 R-S* Write Precom same as Reduced SCSI 2^0 R-T* Write Precom all tracks The write precom stuff is in the ACB-4000A not in the RLL 4070. Hope this helps. Eric Lindsay, homebrew 68xxx forever! eric@zen.maths.uts.edu.au