RadiSys EPC-5A, Hardware & Software Reference Manual

Page: 11 / 156

Chapter 1: Product Description
Page 3
1 1
Product Overview
The EPC-5A is a PC/AT compatible embedded CPU module containing the
following:
•
100 MHz Intel486 DX4 processor
•
RadiSys R400EX chipset
•
16 Kbytes of cache and math co-processor on-chip
•
4 MB to 256 MB of DRAM memory
•
Keyboard interface
•
2 standard 9-pin DTE serial ports (COM1 & COM2)
•
1 standard output-only parallel port (LPT1)
•
Time-of-day clock with user-replaceable battery
•
Phoenix 486 BIOS version 4.05
•
VMEbus interface
•
EXM expansion interface
The EPC-5A form factor has been designed to the VMEbus specification (6U). It
provides direct communication to all three VMEbus address spaces (A32, A24, &
A16). The EPC-5A DRAM permits dual-ported access from both the PC side and the
VME side.
The EXM expansion interface is electrically similar to the 16-bit PC/AT ISA bus.
Video is provided through an add-in card called an EXM (EXpansion Module). Mass
storage can be added via the EXP-MX Mass Storage module inside the VME chassis
or externally via other EXMs that provide an IDE or a SCSI interface. Other EXMs
are available to provide additional peripherals such as serial ports (RS232 or RS422),
an internal modem, flash memory (and accompanying flash file system drivers),
timer/counter, PCMCIA adapter and Ethernet controllers. Also, an adapter module
(EXP-AM) can be used to install a single 8-bit PC/AT add-in short card.