Overview
========
The HSx80 Array Controller Software (ACS) is the software
component of the HSx80 array controller subsystem which executes on the
HSx80 controller and processes I/O requests from the host, performing
the device level operations required to satisfy requests.
ACS operating firmware is stored in a PCMCIA program card. The
card ships with the controller. Each time ACS operating firmware is
updated, new cards are manufactured for each controller model. The
update cards can be purchased on a per-release basis or through an
update service contract.
Once the program card is installed in the controller, the
contents are copied into shared memory. Special error correction code
corrects program card errors when possible. Anytime a reset occurs on
the controller, this loading process gets repeated. Because of this
scheme, when the firmware executes, only part of the controller
initialization diagnostics run directly from the program card. The
remaining diagnostics, all functional code, and all utilities run from
controller shared memory.
PCMCIA Program Card
===================
----------------------------------------------------------------------------
| |
