INTELLIGENT INTERFACES EXPANSION CARDS

The Intelligent Interfaces range of IEEE488 Interface, 16 Bit Parallel 
I/O, Dual RS423 Serial and 12 Bit Analogue I/O Expansion Cards for the 
Archimedes Computer System can be used with either the Arthur 1.2 or 
RISC OS Operating Systems.  No modifications or upgrades are required.

IEEE488 INTERFACE

An Archimedes Computer System fitted with an IEEE488 Interface Expansion
Card can communicate with up to 14 test and measurement instruments eg 
DVM's (digital voltmeters), plotters, digital oscilloscopes, spectrum 
analysers, function generators, counters, logic analysers, programmable
power supplies etc.

Areas of application in test and measurement include industrial and 
academic research and development laboratories.  ATE (automatic test 
equipment) systems, control systems, production test systems, data 
exchange with Hewlett Packard Computers, connecting peripherals eg 
plotters and printers.

The combination of Acorn 32-bit RISC Technology and Intelligent 
Interfaces hardware and software design results in an extremely fast 
data transfer rate (around 250 Kbyte/s).

The computer can be configured as system controller or as a simple 
talker/listener.  As the system controller the computer can send REN 
(remote enable)and IFC (interface clear) and then operate as the 
controller in charge.  It can then address itself and other devices to 
talk and listen and input and output data.  All addressed commands eg 
GTL (Go To Local) and all universal commands eg LLO (Local Lockout) can 
be sent.  The computer can conduct both serial and parallel polls and 
pass control to another device.

As a talker/listener the computer can, when addressed by the controller 
in charge, input and output data.  It can specify the serial poll STB 
(status byte) and RQS (request service) from the controller in charge by
sending SRQ (service request).  The computer can take part in a serial 
poll and be remotely configured to take part in a parallel poll.  It can
become controller in charge if control is passed to it by the controller
in charge.

Software in ROM on the Expansion Card extends the operating system to 
enable IEEE488 interface operation and presents a simple low level 
software interface for assembler programmers.  For those programming in 
BASIC an ultra high level software interface is provided by a library of
BBC BASIC Procedures and Functions supplied on disc.  Libraries of 
procedures for FORTRAN 77, ISO Pascal and ANSI C are available 
separately.

16 BIT PARALLEL I/O

The 16 Bit Parallel I/O Expansion Card provides two separate 16 bit 
input/output ports.  Each port can be configured as either one 16 bit 
input or output port with two handshake lines or as two separate 8 bit 
input or output ports each with two handshake lines.  All the data and 
handshake lines are fully buffered.  Other facilities include four 16 
bit counter/timers and two 8 bit shift registers.

A relocatable module extends the operating system to enable data input 
and output and presents a simple low level software interface for 
assembler programmers.  To simplify the use of the Expansion Card from 
BASIC, a library of procedures and functions is supplied on disc.  A 
similar library is supplied to enable the use of the Expansion Card from
FORTRAN 77.

DUAL RS423 SERIAL INTERFACE

The Dual RS423 Serial Interface Expansion Card provides two additional 
RS423 serial interfaces for communicating with RS423 or RS232 devices eg
printers, plotters, instruments, etc.

Each interface has independently programmable transmit and receive baud 
rates from 50 to 38400 baud and independently programmable data formats 
(5,6,7 or 8 data bits plus parity - odd, even, no or force parity - 1,
1.5 or two stop bits).  The two standard 9-pin D type connectors used 
have the same pin assignments as the built-in RS423 Serial Interface of 
the computer.

Software in ROM on the Expansion Card extends the operating system to 
enable the use of the additional RS423 serial interfaces.

12 BIT ANALOGUE I/O

In development

INTELLIGENT INTERFACES LTD
43b WOOD STREET
STRATFORD-UPON-AVON
WARWICKSHIRE
CV37 6JQ

TEL: 0789 415876
FAX: 0789 299600
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