Adaptec AHA-1520A Wartungshandbuch Seite 20

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aic(7D) Devices SunOS 5.5
NAME aic low-level module for Adaptec AIC-6360 based ISA host bus adapters
SYNOPSIS aic@ioaddr,0
AVAILABILITY x86
DESCRIPTION The aic module provides low-level interface routines between the common disk/tape I/O
subsystem andAIC-6360 based SCSI (Small Computer System Interface) bus controllers. It
also provides support for the Adaptec AHA-1510A,AHA-1520A, and AHA-1522A SCSI con-
trollers. It supports theAIC-6360 SCSI controller on the Sound Blaster 16 SCSI-2 board but
does not support the audio functions — the sbpro(7D) driver provides these capabilities.
Note that theAHA-1510A board and theSCSI port on the Sound Blaster 16 SCSI-2 board
can only be used as a secondary controller — not a primary (boot) controller.
The aic module can be configured for disk and streaming tape support for one or two
host adapter boards, each of which must be the sole initiator on a SCSI bus.
Autoconfiguration code determines if the adapter is present at the configured address
and determines what types of devices are attached to the adapter.
CONFIGURATION The driver attempts to initialize itself using the information found in the configuration
file, aic.conf.
If multiple boards are configured in a singlesystem, each board must occupy a different
I/O base address in the systemI/O address space. Each board must also be assigned a
different IRQ level.
The AHA-1522 or AHA-1520A controller can be used as a primary boot controller only at
I/O base address 0x340 (unless specialBIOS from Adaptec is procured). Therefore, if a
system installation is performed using aSCSI device (such as aCD-ROM drive) connected
to one of these adapters, the adapter must be configured with I/O base address 0x340.
(The adapter BIOS supports booting from this address only.)
Refer to the AHA-1520A/1522A AT-to-SCSI Host Adapters Installation Guide provided with
the controller for instructions on installation of the adapter and the valid jumper settings.
The default jumper configuration described in the AHA-1520A/1522A AT-to-SCSI Host
Adapters Installation Guide is the recommended configuration for the controller.
FILES /kernel/drv/aic.conf aic device driver configuration file
SEE ALSO driver.conf(4), sysbus(4), sbpro(7D)
NOTES The aic driver does not support direct memory access (DMA).
The aic driver does not support SCSI timeouts.
7D-16 modified 6 Oct 1994
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