Configuring Your System
6-10 AlphaServer 1000 Rackmount Owner's Guide
Keyboard Type
Your system comes equipped with a 101-key enhanced keyboard that allows you to
communicate with your system by entering data or commands. Note that some European
language keyboards have 102 keys.
Use the ARC console Setup menu to change the keyboard configuration.
Refer to your operating system or application software documentation for software-
specific key functions.
EISA and ISA Options
You can determine whether an option card is an EISA or ISA option by examining the
contacts of the card (see Figure 6–3):
•
EISA cards have two interlocking rows of gold contacts.
•
ISA cards have a single row of gold contacts.
Figure 6–3: EISA and ISA Cards
ISA
EISA
MLO-011570
EISA Bus
The EISA (Extended Industry Standard Architecture) bus is a 32-bit industry standard
input/output bus. EISA is a superset of the well-established 16-bit ISA bus. EISA was
designed to accept newer 32-bit components while still remaining compatible with older 8-
bit and 16-bit cards.
EISA offers performance of up to 33 MB/sec for cards with bus mastering and DMA
capabilities. Up to eight EISA or ISA modules can reside in the EISA bus portion of the
system board. All EISA slots are bus master slots, and can be filled in any order.
