Jumper Block Locations

EPM-4 Reference Manual Reference – 23

JUMPER SUMMARY

Table 2: Jumper Summary

Jumper
Block
Description As
Shipped
Page
V1 Battery Power Jumper
[1-2] In – Discharge CMOS Memory
[2-3] In – Standard Operation
[2-3] In 26
V2 COM3 configuration
[1-2] In and [3-4] In – RS-485 Endpoint
[1-2] In and [3-4] Out – RS-485 Intermediate
[1-2] Out and [3-4] In – RS-422
[1-2] In
[3-4] In 27
V2 COM4 configuration
[5-6] In and [7-8] In – RS-485 Endpoint
[5-6] In and [7-8] Out – RS-485 Intermediate
[5-6] Out and [7-8] In – RS-422
[5-6] In
[7-8] In 27
V3
Rev. 4.xx
and earlier
CompactFlash Master/Slave Section
In — Master IDE Device
Out — Slave IDE Device
In 28
V3
Rev. 5.xx
and later
CompactFlash Master/Slave Section
In — Slave IDE Device
Out — Master IDE Device
Out 28
V4[1-2] System BIOS Selector
In — Run Time System BIOS occupies E0000h to FFFFFh
Out — Master System BIOS occupies E0000h to FFFFFh
Note: The Run Time System BIOS is field upgradeable using the BIOS upgrade
utility. See www.VersaLogic.com/private/lynxsupport.asp for further information.
In —
V4[3-4] General Purpose Input Bit
In — Bit D0 in SCR register reads as 1
Out — Bit D0 in SCR register reads as 0
In —