VersaLogic EPM-4, Reference Manual

Table of Contents 

iv 

Connector Location Diagram............................................................................... 20

Connector Functions and Interface Cables .......................................................... 21

Jumper Block Locations ................................................................................................... 22

Jumper Summary ................................................................................................. 23

Power Supply.................................................................................................................... 24

Power Connectors ................................................................................................ 24

Power Requirements ............................................................................................ 25

Lithium Battery.................................................................................................... 25

CPU................................................................................................................................... 26

System RAM..................................................................................................................... 26

Memory................................................................................................................ 26

CMOS RAM ..................................................................................................................... 26

Clearing CMOS RAM ......................................................................................... 26

Default CMOS RAM Setup Values ..................................................................... 26

Real Time Clock ............................................................................................................... 26

Setting the Clock.................................................................................................. 26

Battery Backed Static RAM.............................................................................................. 27

Serial Ports........................................................................................................................ 27

COM Port Configuration ..................................................................................... 27

COM3 and COM4 RS-485 Mode Line Driver Control ....................................... 27

IDE Hard Drive / CompactFlash / CD-ROM Interface .................................................... 28

Utility Connector (J7) ....................................................................................................... 29

Keyboard/Mouse Interface .................................................................................. 30

Programmable LED ............................................................................................. 30

External Speaker .................................................................................................. 30

Push-Button Reset................................................................................................ 30

General-Purpose Timer Inputs............................................................................. 30

Parallel / Floppy Port  ....................................................................................................... 31

Parallel Port Operation......................................................................................... 31

Floppy Port Operation ......................................................................................... 31

Parallel / Floppy Port Pinout................................................................................ 31

Ethernet Interface.............................................................................................................. 32

BIOS Configuration............................................................................................. 32

Status LED........................................................................................................... 32

Ethernet Connector .............................................................................................. 32

Watchdog Timer ............................................................................................................... 33

Expansion Bus .................................................................................................................. 34

PC/104-

Plus 

 (PCI Bus)....................................................................................... 34

PC/104 (ISA Bus) ................................................................................................ 34

I/O Configuration................................................................................................. 34

Memory and I/O Map ....................................................................................................... 36

ÉlanSC520 Memory Mapped Configuration Region (MMCR) Registers........... 36

Memory Map ....................................................................................................... 36

I/O Map................................................................................................................ 37

Interrupt Configuration ..................................................................................................... 38

Special Control Register ................................................................................................... 39

Revision Indicator Register............................................................................................... 40

Map and Paging Control Register..................................................................................... 41

Appendix A — CBL/CBR-5009 ..................................................................................... 43