cottrell@NBS-VMS.ARPA (COTTRELL, JAMES) (11/02/85)
/* We want to connect our CDC 9762 (RM03 SMD lookalikes) to a SUN Xylogics 450 controller. Connecting a single A & B cable to only one drive & formatting/partitioning/labeling with DIAG (SUN 2.0) works OK. However, when I attempt to daisy chain them, all hell breaks loose. I can get the SEEK command to work, but any data transfer dies with an ERROR 16: CRC error. Even RHDR (read headers) blows up, giving different answers every time. I read the manual on daisy chaining & I think I have the cables & terminators right, but then again... jim cottrell@nbs */ ------
jsdy@hadron.UUCP (Joseph S. D. Yao) (11/17/85)
In article <2726@brl-tgr.ARPA> cottrell@NBS-VMS.ARPA (COTTRELL, JAMES) writes: >However, when I attempt to daisy chain them, all hell breaks loose. Have you checked to make sure that each drive physically believes that it is a different drive? Try hooking them up one at a time and seeing whether they respond to similar drive numbers, or to more than one drive number. The latter is important if, e.g., drive 0 also responds to 2; then any attempt to access drive 2 will get both drives responding, with an almost guaranteed error condition. -- Joe Yao hadron!jsdy@seismo.{CSS.GOV,ARPA,UUCP}