FRASER'S HILL
FHL-7151
USER REFERENCE MANUAL
Revision 2.00

Copyright © Fraser's Hill Ltd. 1990-1998. All Rights Reserved.
Fraser's Hill and FHL are registered trademarks of Fraser's Hill Ltd.

HARDWARE CONFIGURATION

The FHL-7151 has one switch and one jumper block which are used to configure the board. These switches and jumpers are located as follows.

S1: PC I/O Base Address
J1: PC Interrupt Request Level

S1 - PC I/O BASE ADDRESS

Switch S1 sets the base PC I/O address for accessing the FHL-7151 adapter card. The following table lists the valid switch settings and the corresponding PC I/O base address.

position         1       2       3       4      i/o
address bit     A8      A7      A6      A5      addr

                on      on      on      on      0200
                on      on      on      off     0220
                on      on      off     on      0240
                on      on      off     off     0260
                on      off     on      on      0280
                on      off     on      off     02A0
                on      off     off     on      ----
                on      off     off     off     ----
                off     on      on      on      0300
                off     on      on      off     0320
                off     on      off     on      0340
                off     on      off     off     0360
                off     off     on      on      0380
                off     off     on      off     03A0
                off     off     off     on      ----
                off     off     off     off     ----

This jumper selects the PC IRQ used when the board microcode wants to interrupt the PC. Choices are IRQ2, IRQ3, IRQ4, IRQ5, and IRQ7.