Installation - NEC 78K/0 Series User Manual

APPENDIX C INTERFACE BOARD (IE-70000-98-IF-C) FOR PC-9800 SERIES
C.2 Installation
(1) I/O address settings
SW1 and SW2 are the switches selecting the C bus I/O addresses. SW1 numbers 1 to 8 correspond to C bus
addresses A4 to A11, and SW2 numbers 1 to 4 correspond to C bus addresses A12 to A15.
In the IE-78K0-NS, the addresses should be set in the 16 bytes between 00D×H and FFD×H. The switch takes
the value "0" when ON and "1" when OFF.
The addresses used for setup must be values that are not used in the PC system or for other boards. In
addition, since these values are used during software installation, make a note of them for future reference.
Setting examples of I/O address, SW1 and SW2 are shown below.
Table C-1. SW1 and SW2 Settings When Setting I/O Address to 01D× × × × H
SW1 Number
Address
ON
OFF
SW2 Number
Address
ON
OFF
Caution Use the default setting for SW1 numbers 1 to 4.
1 2 3 4
A4 A5 A6 A7
0
1 1 1
1 2 3 4
A12 A13 A14 A15
0 0 0
0
User's Manual U13731EJ3V0UM
5 6 7 8
A8 A9 A10 A11
0 0 0
1
5 6 7 8
OFF OFF ON OFF
0
1 1 1
41