Chapter 17
DMA Configuration
Kontron User's Guide PC/104-520
33
17.2
DMA Request
To select one out of eight DREQ lines following jumpers are available as JP2. For the SC520 GPREQ0 line use
DREQ0, DREQ1, DREQ2 or DREQ3, for SC520 GPREQ1 line use DREQ5, DREQ6 or DREQ7. Place only one jumper
for each GPREQ0 and GPREQ1 line. Please select this configuration also in the BIOS setup. The delivery
default is framed.
DREQ0
DREQ1
DREQ2
DREQ3
DREQ5
DREQ6
DREQ7
ISA Bus
GPREQ0
GPREQ1
SC520
Note:
In addition to JP2 there is the possibility to connect DREQ3 to GPREQ1 instead of DREQ5-7. Use
R91
for this
purpose. Please select the configuration also in the BIOS setup.