IDE hard disk drive jumper settings
Model number
Single drive
Master drive
Slave drive
Conner CFS1275A
C/D jumpered
C/D jumpered
No jumpers
I
Conner CFS850A
C/D jumpered
C/D jumpered
No jumpers
I
Conner CFS540A
C/D jumpered
C/D jumpered
No jumpers
I
Conner CFS425A
C/D jumpered
C/D jumpered
No jumpers
I
Conner CFS420A
C/D jumpered
C/D jumpered
No jumpers
I
Conner CFS270A
C/D jumpered
C/D jumpered
No jumpers
I
Western Digital AC2540
No jumpers
5-6 jumpered
3-4 jumpered
Western Digital AC2420
No Jumpers
5-6 jumpered
3-4 jumpered
Western Digital AC2340
No jumpers
5-6 jumpered
3-4 jumpered
Western Digital AC2250
No jumpers
5-6 jumpered
3-4 jumpered
DMA Assignments
Level
Assigned device
D M A 0
Reserved
DMA1
Available
D M A 2
Diskette drive controller
D M A 3
Available
D M A 4
Cascade from DMA1 to DMA2
D M A 5
Spare
D M A 6
Spare
D M A 7
Spare
Specifications
A-11