Path: utzoo!utgpu!watmath!att!ucbvax!SFAUSTIN.BITNET!Z4648252 From: Z4648252@SFAUSTIN.BITNET (Z4648252) Newsgroups: comp.sys.atari.st Subject: Bounced mail to Berkeley Message-ID: <891116.07490041.079416@SFA.CP6> Date: 16 Nov 89 13:49:01 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 33 Vance Chin of Berkeley Micro Systems writes: "Larry, Since there was all this discusion one the net about what rev to have on the Seagate ST-296N we decided to buy one. the results are: When Segate upgraded the "rom rev" of the ST-296N to "REV 8" they also changed the timing of the SCSI bus. This had the affect of requiring a faster handshake for each byte. So, if the host board you are using delays the signal to long it will have to wait for the next transfer phase. This in turn takes longer to transfer the data block from the drive. On our host board we used a 1:1 interleave to achieve the maximum data rate with no problems on a Seagate ST296N rev 8 drive. This is why Seagate is bemused when you call them up and say " The drive won't work 1:1 on my system". Seagates tester runs them at 1:1 interleave inhouse to test them faster. Vance Chin Berkeley Microsystems" ------------------ Vance, Thanks for the information about the 296n transfer rate. My only question at this point is why the SeaGate is the only one with this difficulty with the various host adaptors? I'd be willing to buy the Berkeley host adaptor if I knew for sure that I could get 1:1 to work. As usual, many thanks... you have always been helpful on the information department. Larry Rymal: |East Texas Atari 68NNNers|