Specifications

18 Chapter 2 - Controller Jumper Settings
IRQ5 J3-N
J2-Y
IRQ7 Cross-connect (connect jumper
vertically so the left pins of J2 and J3
are jumpered)
Base Port (in hex)
280 (recommended) J1-N
J0-N
240 J1-N
J0-Y
180 J1-Y
J0-N
100 J1-Y
J0-Y
2A0 Cross connect (connect jumper
vertically so the left pins of J0 and J1
are jumpered)
E271-141 Emulation Mode (From Top)
Enable J10-Y
Disable J10-N
Resolution
(E271-141 Emulation Mode Only)
8-Bit J11-Y
12-Bit J11-N
Selecting the Base I/O Port
The E271-2201 uses eight consecutive I/O ports. The Base I/O Port is specified by
jumpers J0 and J1. The values of the settings are as follows:
Base I/O Port (Hex) J0 J1
280 none none (shipped setting)
240 installed none
180 none installed
100 installed installed
2a0 ----cross connected----
A software command may also be used to select a wider range of Base I/O Ports.
Any base address that is a multiple of 8 can be used. The Base I/O Port can be
saved in NVRAM as a power-on default. See the Parameter command, page 95,
for details.
Choose an I/O address block carefully so it will not contend with another device.