NAME

aha274x − low-level SCSI adapter module for Adaptec 7770 chip

DESCRIPTION

The aha274x module is a SCSI driver that controls the Adaptec 7770, also known as the Arrow chip. The driver supports the embedded Adaptec 7770 chip on OEM motherboards and add-on cards such as Adaptec 274x. The driver works with a variety of SCSI peripherals such as, hard disks, tape drives (8mm, 4mm, 1/4-inch, and 9-track), removable devices, CD-ROM drives, etc. 

Configurations

The aha274x module is a boot loadable device. It expects the interrupt to be at IRQ 11. Before installation, users should make sure the IRQ is set correctly via EISA configuration under DOS.  There is no compatibility mode for this controller as in the case of Adaptec 174x. Once installed, kconfig(1) can be used to reconfigure the board.

Internals

This driver uses HPDD and gsc(7) modules as integral parts of the INTERACTIVE UNIX HPDD subsystem. It also uses Adaptec’s HIM (Hardware Interface Module) to talk to the hardware. 

CAVEATS

TwinChannel SCSI channels are not supported under Release 4.0 or 4.1. 

SEE ALSO

aha284x(7), disk(7), gsc(7), hpdd(7), tape(7). 

ADDED VALUE

This entry, supplied by SunSoft, Inc., is an extension of UNIX ­System V. 
 
 

\*U  —  Version 1.0