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CHAPTER 1.
GENERAL INFORMATION
1-1.
INTRODUCTION
The iSBC 86/14 and the iSBC 86/30 Single Board Computers, members of
Intel's complete line df 8-bit and 16-bit single board computer products,
are an enhanced version of the iSBC 86/12A board that is contained on a
single printed circuit board.
The iSBC 86/14 and iSBC 86/30 boards
provide a maximum of 64k bytes and 256k bytes of dynamic dual port RAM,
respectively, and feature 8 MHz CPU operation with Multimodule board
expansion via two iSBX Bus connectors.
The iSBC 86/14 board and iSBC 86/30 board (hereafter referred to jointly
as the iSBC 86/14/30 board) provide a complete computer system that is
designed around the 16-bit iAPX 86/10 HMOS microprocessor (8086-2 CPU),
the main processing device on the boards.
The iAPX 86/10 microprocessor
may be operated at either a 5 MHz clock rate or an 811Hz clock rate on
the iSBC 86/14/30 board in performing both 8-bit and 16-bit data
transfers to/from the single board computer.
The iSBC 86/14/30 board provides a direct iSBC 86/12A board replacement
that is shipped with 32k bytes (maximum on the iSBC 86/14 board) or 128k
bytes (maximum on the iSBC 86/30 board) of dynamic RAM, 4 sockets for
installation of up to 64k bytes of user-provided EPROM devices, a serial
communications port providing an RS232C interface, three parallel I/O
ports providing 24 individual I/O lines, two iSBX Bus connectors
providing interface to either 8-bit or 16-bit Multimodule board
expansion, two independently programmable interval timers, and nine
levels of interrupt priority supporting bus-vectored interrupts.
The iSBC 86/14/30 board is fully Multibus interface compatible and is
configurable for operation in a multi-master system environment.
The
on-board
RAM
is expandable via addition of the plug-in memory expansion
boards available from Intel:
the iSBC 300A
RAM
Expansion Multimodule
Board (86/14) and the iSBC 304
RAM
Expansion Multimodule Board (86/30).
As shipped, the each version of the board configures the RAM totally as a
dual port resource.
The
RAM
may be removed from the dual port
configuration in increments of one-fourth of the total
RAM
size.
Compatibility of the iSBC 86/14/30 board with the iSBC 86/12A board
includes compatibility with the processing expansion features available
in the iSBC 337 Numberic Data Processor, and the iSBC 303 Parity
Generator/Checker Multimodule Board (86/14 only).
Appendix D at the end
of this manual contains a brief description of the major functional and
operational differences between the iSBC 86/14/30 board and the iSBC
86/12A board.
1-1
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