System Interface Board
Introduction
The
HP
98247 A System Interface
Board
meets most, if
not
all,
I/O
needs of
the
Design Au-
tomation
marketplace. Functions possible with
this
board
card
includes:
• RS-232.
• HP-IB.
• Audio Jack.
• HP-HIL.
• LAN.
• DMA.
• Optional High-Speed Disc HP-IB Interface Add-On.
The
system interface
board
allows
this
wide range of interfaces
at
the
minimum cost.
The
LAN
and
optional high-speed disc interface add-on allows users
to
choose
the
interfaces
that
are necessary for
their
application.
To
maintain
software compatibility,
the
designs of several existing interface cards used in
the
Models 310/320 were integrated together.
Cards
emulated
on
the
system interface
board
are:
•
HP
98625B High-Speed Disc Interface.
•
HP
98643 Local
Area
Network
(LAN)/300
Link.
•
HP
98620B DMA Controller.
• 98561-66532
Human
Interface
Card.
Each of these sections of
the
board
operates
independently from one another. Interfaces
are
identical
to
the
earlier 98561-66532
Human
Interface
Card.
Software compatibility is assured.
Figure 3-23 is a block diagram
of
the
system interface board. Refer
to
this diagram for functional
descriptions.
Functional Description
99
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