Adaptec 2740A User Manual - Page 108
Adaptec EZ-SCSI, Advanced SCSI Programming Interface, AIC-7770, ASPI Manager, Asynchronous Data
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Glossary A Adaptec EZ-SCSI A user-friendly software program that automatically installs SCSI devices such as fixed disks and CD-ROM drives on a PC. Adaptec EZ-SCSI copies the required software programs to the PC's fixed disk and edits the configuration files so the host adapter can access the devices. Advanced SCSI Programming Interface See ASPI. AIC-7770 Adaptec's single-chip EISA-to-Fast SCSI host adapter. ASPI Advanced SCSI Programming Interface. A standard SCSI software interface that acts as a liaison between host adapters and SCSI device drivers. ASPI enables host adapters and device drivers to share a single SCSI hardware interface. ASPI Manager A software module that provides an interface between ASPI modules, a host adapter board, and the SCSI devices connected to the adapter. A single ASPI manager can handle multiple I/O requests from multiple ASPI modules. ASPI managers are written for a specific operating system-such as DOS, OS/2 or UNIX-and a specific family of host adapter boards. Asynchronous Data Transfer A data transfer method that involves interlocking a signal to the initiator and a signal to the SCSI target in such a way that each step of the data transfer must occur before the next step can begin. Asynchronous data transfer is usually slow. The rate is not affected by external timing constraints such as cable length and circuit response time. AT Bus See ISA. Glossary-3 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page G-3) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93