Chapter 1 System Overview
RHINO 5 User’s Manual
6
with the data valid time to allow CAS# to negate earlier while
still satisfying the memory data valid window time.
In addition, Advanced Posted-Write buffers are implemented to
improve memory write timing. Shadow RAM is available as an
option . System BIOS and video BIOS residing in slow
EPROM can be copied to local DRAM to speed up accesses to
BIOS code.
1.5
PCI Bus
The Peripheral Component Interconnect (PCI) local bus was
specified to establish a high performance local bus standard. It
is a 32-bit wide bus supporting burst transactions. PCI local bus
devices residing in add-on cards can be configured
automatically.
The PCI local bus implemented in RHINO 5 is fully compliant
to v2.0 specification. Up to four PCI bus masters are supported.
Advanced PCI bus buffer management logic speeds to the
transfer rate.
1.6
Super I/O Subsystem
To facilitate system implementation, included in RHINO 5 are
two fast Enhanced IDE ports that can dramatically boost the
system performance if fast IDE drives are used.
Furthermore, floppy drives supporting various format are also
supported through the floppy connector on board. The
motherboard is also equipped with two serial ports (16550 Fast
UART compatibles) and one parallel port that operates in
standard, ECP or EPP mode.
In addition, RHINO 5 is designed to support the PS/2 mouse
using specialized keyboard controller and the use of interrupt
