Ampro Corporation 486E - Manual (Page 9)

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Chapter 1
Introduction
General Description
The Little Board™/486e CPU is an exceptionally high integration, high performance, 486DX-based
PC/AT compatible system in the EBX form factor. This rugged and high quality single-board
system contains all the component subsystems of a PC/AT motherboard plus the equivalent of six
PC/AT expansion boards.
Key functions included on the Little Board/486e CPU are:
! CPU
! RAM
! Embedded-PC BIOS
! Keyboard and speaker interfaces
! Four buffered serial ports
! Multimode parallel port
! Floppy drive controller and local-bus IDE drive controllers
! Flat panel/CRT display interface
! Ethernet LAN interface
In addition, the Little Board/486e CPU includes a comprehensive set of system extensions and
enhancements that are specifically designed for embedded systems. It is designed to meet the size,
power consumption, temperature range, quality, and reliability demands of embedded applications.
Among the many embedded-PC enhancements that ensure fail-safe embedded system operation are
a watchdog timer, a powerful NMI generator, and an onboard bootable “solid state disk” (SSD)
capability. The unit requires a single +5 Volt power source and offers "green PC" power-saving
modes under support of Advanced Power Management (APM) BIOS functions (APM Release 1.2-
compliant).
Features
CPU/Motherboard
The Little Board/486e CPU implements a fully PC-compatible motherboard architecture, with an
80486 CPU running at 100 MHz or 133 MHz. The 486 CPU has an 8 Kbyte on-chip cache memory.
The board uses a standard 168-pin Dual In-line Memory Module (DIMM™) memory module, and
supports up to 64M byte configurations. It has a full complement of standard PC/AT architectural
features, including DMA channels, interrupt controllers, real-time clock, and timer counters.