DMM-16R-AT User Manual V1.31
www.diamondsystems.com
Page 7
4.
BOARD CONFIGURATION
Refer to the Drawing of DMM-16R-AT on Page 5 for locations of the configuration items mentioned here.
4.1 I/O Base Address (ISA bus only)
Each board in the system must have a different base address. In ISA bus mode, the board
’s base address is
set with a portion of jumper block J6, located at the lower left corner of the board. Each of the six jumper
locations marked 9, 8, 7, 6, 5, 4 corresponds to the same-
numbered address bit in the board’s 10-bit I/O
address. Bits 3-0 are always 0 for the base address, resulting in a 16-byte I/O address block. A jumper out is
equal to a 1, and a jumper in is equal to a 0. Although any 16-byte location is selectable, certain locations are
reserved or may cause conflicts with other system resources. The table below lists recommended base
address settings for Diamond-MM-16R-AT. The default setting is 300 Hex.
Base Address
Jumper Position
Hex
Decimal
9
8
7
6
5
4
220
544
Out
In
In
In
Out
In
240
576
Out
In
In
Out
In
In
250
592
Out
In
In
Out
In
Out
260
608
Out
In
In
Out
Out
In
280
640
Out
In
Out
In
In
In
290
656
Out
In
Out
In
In
Out
2A0
672
Out
In
Out
In
Out
In
2B0
688
Out
In
Out
In
Out
Out
2C0
704
Out
In
Out
Out
In
In
2D0
720
Out
In
Out
Out
In
Out
2E0
736
Out
In
Out
Out
Out
In
300
768 (Default)
Out
Out
In
In
In
In
330
816
Out
Out
In
In
Out
Out
340
832
Out
Out
In
Out
In
In
350
848
Out
Out
In
Out
In
Out
360
864
Out
Out
In
Out
Out
In
380
896
Out
Out
Out
In
In
In
390
912
Out
Out
Out
In
In
Out
3A0
928
Out
Out
Out
In
Out
In
3C0
960
Out
Out
Out
Out
In
In
3E0
992
Out
Out
Out
Out
Out
In