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  1. Technology
July 29, 1990


By CBR Staff Writer

Adaptec Inc, Milpitas, California is claiming to be first company to market SCSI software compatible with Microsoft’s layered device driver architecture for OS/2, and the company also introduced its Advanced SCSI Programming Interface/2 software for OS/2: ASPI/2 and LADDR form a bus-independent SCSI software architecture with built-in support for up to seven SCSI hard disks, and several options for other peripherals; ASW-1420 1.21, which provides SCSI disk support and an ASPI/2 layer that interfaces with a range of LADDR device modules, works with Adaptec’s AHA-154X – AT to SCSI – and AHA-1640 – Micro Channel to SCSI – host adaptors; the device modules provide support for other peripherals including SCSI tape, write-once optical disks, CD-ROM, digital audio tape, and printer; typical applications for the software are file servers and multi-user systems; the company says that faster system performance is achieved through the ASW-1420 1.21’s support of multitasking input-output which overlaps input-output requests to peripherals, and bus mastering, to reduce the processor’s involvement in the accessing of information.

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