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AHA-1510A/20A Series User’s Guide
Stock Number: 510400-00, Rev. C Page: 1-1
Print Spec Number: 491842-00
Current Date: 11/18/94 ECN Date: 11/29/94
1-1
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Introduction
General Product Information
The AHA-1510A/20A Series consists of three host adapter models:
■ AHA-1510A: ISA-to-SCSI host adapter
■ AHA-1520A: ISA-to-SCSI host adapter with onboard BIOS
■ AHA-1522A: ISA-to-SCSI host adapter with onboard BIOS
and floppy drive controller
Adaptec’s AHA-1510A/20A Series host adapters break the
price/performance barrier with multitasking ISA-to-SCSI I/O per-
formance. These host adapters greatly enhance the I/O performance
of ISA-bus and EISA-bus microcomputers with the much faster SCSI
data transfer rates. AHA-1510A/20A Series host adapters provide
superior data I/O performance at an affordable price.
AHA-1510A/20A Series host adapters excel in single user environ-
ments (i.e., stand-alone computers or network nodes) by utilizing
the CPU’s untapped power to improve system I/O performance.
AHA-1510A/20A Series host adapters support up to eight simulta-
neous I/O tasks and can connect up to 56 devices (7 SCSI targets
with 8 logical units per target).
AHA-1510A/20A Series host adapters are fully compatible with
most SCSI devices and ISA-bus/EISA-bus computers. They fully
support SCSI-1 and SCSI-2.
AHA-1510A/20A Series host adapters give you access to Adaptec’s
ASPI (Advanced SCSI Programming Interface) family of software.
This family includes device drivers that work with tape, disk,
CD-ROM, WORM, and DAT devices and also with operating sys-
tems such as DOS, OS/2, UNIX, and NetWare. The ASPI software
communicates with the operating system managers through the
common ASPI platform.