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The speaker interface
PCI-to-EISA bridge chip set
Time-of-year (TOY) clock
Connectors:
EISA bus connectors (Slots 1-8)
PCI bus connectors (Slots 11, 12, and 13)
Note
If the top EISA connector is used (slot 8), the bottom PCI slot (slot 11)
cannot be used. If the bottom PCI slot is used, the top EISA slot cannot
be used.
Memory module connectors (20 SIMM connectors)
CPU daughter board connector
5.4 EISA Bus Options
The EISA bus (Extended Industry Standard Architecture) is a 32-bit industry
standard I/O bus. EISA is a superset of the well-established ISA bus. EISA was
designed to accept newer 32-bit components while remaining compatible with
older 8-bit and 16-bit cards.
EISA offers performance of up to 33 MB/sec for bus masters and DMA devices.
Up to eight EISA or ISA modules can reside in the EISA bus portion of the card
cage. All slots are bus master slots. EISA slots can be filled in any order.
Warning: For protection against fire, only modules with current-
limited outputs should be used.
5.5 ISA Bus Options
The ISA bus (Industry Standard Architecture) is an industry-standard, 16-bit I/O
bus. The EISA bus is a superset of the well-established ISA bus and has been
designed to be backward compatible with 16-bit and 8-bit architecture. Therefore,
ISA modules can be used in AlphaServer 1000 systems, provided the operating
system supports the device.
System Configuration and Setup 5–21
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