Dell OptiPlex GXi Service Manual (.pdf) - Page 42
DMA Channel Assignments, Table 1-4., DREQ Line Assignments
View all Dell OptiPlex GXi manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 42 highlights
DMA Channel Assignments Table 1-4. DREQ Line Assignments DREQ Line Used By/Available DREQ0 Available DREQ1 Available DREQ2 Generated by super I/O controller to initiate DMA cycle for attached diskette drive DREQ3 Available DREQ4 Generated by bus controller chip to activate second DMA controller DREQ5 Available DREQ6 Available DREQ7 Available NOTE: The built-in sound controller, built-in NIC, and built-in video controllers are assigned available DMA channels automatically during system start-up. 1-24 Dell OptiPlex GXi Systems Service Manual
1-24
Dell OptiPlex GXi Systems Service Manual
D
MA Channel Assignments
Table 1-4.
DREQ Line Assignments
DREQ Line
Used By/Available
DREQ0
Available
DREQ1
Available
DREQ2
Generated by super I/O controller to initiate DMA cycle for
attached diskette drive
DREQ3
Available
DREQ4
Generated by bus controller chip to activate second DMA
controller
DREQ5
Available
DREQ6
Available
DREQ7
Available
NOTE: The built-in sound controller, built-in NIC, and built-in video controllers are assigned
available DMA channels automatically during system start-up.