ken@HAMLET.CALTECH.EDU (Kenneth Adelman) (04/30/87)
Does anyone know if there is a limit on the number of MSCP disk controllers which one can place on the Microvax II Qbus? We have a Microvax II with the standard RD53 drive and are trying to add two Spectrologics MSCP-to-SMD controllers each running two eagles, and run into the following problems: 1) The CSR address on the spectrologics controller can only be set to the address that VMS expects to find the first or second MSCP controller. It can be set to other addresses, but AUTOCONFIGURE ALL obviously doesn't find it. 2) When connected by hand the PUC0 UCB appears, but no DUCx devices. PUC0 is online, and appears to be talking to the controller. If the RD53 controller is removed, the spectrologics controllers work just fine as numbers 0 and 1. Any ideas? Kenneth Adelman Caltech