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IPC-1600 Architecture
The architecture of the IPC-1600 provides many useful and powerful
multiuser capabilities under the UNIX system. Furthermore, single-user
applications using the IPC-1600 for general-purpose I/O, as well as for
industrial control, can be done under MS-DOS.
IPC-1600 features include the following:
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One 80C186 16-bit microprocessor (12.5 MHz).
Industry Standard Architecture (ISA) bus connectors (any 16- or 32-bit
slot can be used).
One host Interrupt ReQuest (IRQ) level can be shared per 16 ports or
one IRQ level can be assigned for all IPC-1600s (maximum of 7 boards
[112 ports]).
A 64-KB dual-ported Static Random Access Memory (SRAM) is used for
data storage and buffering. This SRAM provides communications and
control between the host processor and the IPC-1600 microprocessor.
The host processor address range for this space is on 64KB boundaries
and is switch selectable. This SRAM is “zero-wait-state” to the
IPC-1600 microprocessor.
A 16KB RAM for local programs.
The use of a 16-bit data transfer on the Industry Standard Architecture
(ISA) bus for maximum efficiency.
Chapter 6, “System Features,” provides more detailed information.
OVERVIEW 1-5