esp man page on OpenBSD

Printed from

ESP(4)		     OpenBSD Programmer's Manual (SPARC64)		ESP(4)

     esp - ESP NCR 53c94 on-board or SBus SCSI interface

     dma* at sbus?		 (SBus SCSI)
     esp* at dma?		 (two flavours)
     esp* at sbus?		 (depending on model)
     scsibus* at esp?

     The esp is an on-board or SBus SCSI controller based on the NCR 53c94
     chip, found on some Sun UltraSPARC workstations.

     Bits 0-15	 Disable disconnect/reselect for the corresponding target
     Bits 16-31	 Disable synchronous negotiation for target "[bit - 16]"

     The esp device flags may be OR'd together to enable any combination of
     the features listed above.	 Targets 4 through 7 typically have
     disconnect/reselect enabled on the premise that tape devices normally
     have one of these targets.	 Tape devices should be allowed to disconnect
     for the SCSI bus to operate acceptably.

     cd(4), ch(4), intro(4), isp(4), sbus(4), scsi(4), sd(4), st(4), uk(4)

     OpenBSD support for the esp first appeared in OpenBSD 3.0.

OpenBSD 4.9			 July 3, 2010			   OpenBSD 4.9

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