Adaptec 1742A User Manual
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GlossaryAdapter CommandA command transmitted to the host adapter using the CommandData Out Port and the Data In Port. The commands aresequenced using the Control Port, the Status Port, and the Inter-rupt Flag Port. Abbreviated as IOCP command.AENSee Asynchronous Event NotificationAHA-1540Adaptec host adapter for connecting SCSI devices to the PC-AT®backplane bus. The AHA-1740A/42A/44 is an enhanced version ofthe AHA-1540.AHA-1540BThe enhanced high-performance Adaptec host adapter for connect-ing SCSI devices to the PC-AT backplane bus.AHA-1542BThe enhanced high-performance Adaptec host adapter for connect-ing SCSI devices and standard IBM-compatible floppy diskdevices to the PC-AT backplane bus.AHA-1740A/42A/44Either the AHA-1740A, 1742A or the AHA-1744.ASPIAdvanced SCSI Programming Interface. A software architecturewhich permits device modules to migrate across different hard-ware by communicating with the hardware through a pass-through interface to a manager written to the specific hardware.Asynchronous Data TransferData transfer performed by the SCSI interface involving the inter-locking of a signal to the initiator (REQ) and a signal to the target(ACK) such that each step of the data transfer protocol mustoccur before the next step can begin. Characterized by a low dataGL-1 |
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