Chapter 5: Advanced Motherboard Setup
5-23
IDE Connectors
There are no jumpers to config-
ure the onboard IDE connectors
J18 and J19. Refer to the table
on the left for pin definitions.
Pin Number Function
1 Reset IDE
3 Host Data 7
5 Host Data 6
7 Host Data 5
9 Host Data 4
11 Host Data 3
13 Host Data 2
15 Host Data 1
17 Host Data 0
19 GN D
21 DRQ3
23 I/O Write-
25 I/O Read-
27 IOCHRDY
29 DACK3-
31 IRQ14
33 Addr 1
35 Addr 0
37 Chip Select 0
39 Activity
Pin Number Function
2 GND
4 Host Data 8
6 Host Data 9
8 Host Data 10
10 Host Data 11
12 Host Data 12
14 Host Data 13
16 Host Data 14
18 Host Data 15
20 Key
22 GND
24 GND
26 GND
28 BALE
30 GND
32 IOCS16-
34 GND
36 Addr 2
38 Chip Select 1-
40 GND
IDE Connector Pin Definitions
(J18, J19)
Floppy Connector
The floppy connector is located
on J26 and requires a 34-pin rib-
bon cable for operation. See the
table on the right for pin defini-
tions.
Pin Number Function
1 GND
3 GND
5 Ke y
7 GND
9 GND
11 GN D
13 GN D
15 GN D
17 GN D
19 GN D
21 GN D
23 GN D
25 GN D
27 GN D
29 GN D
31 GN D
33 GN D
Pin Number Function
2 FDHDIN
4 Reserved
6 FDEDIN
8 Index-
10 Motor Enable
12 Drive Select B-
14 Drive Select A-
16 Motor Enable
18 DIR-
20 STEP-
22 Write Data-
24 Write Gate-
26 Track 00-
28 Write Protect-
30 Read Data-
32 Side 1 Select-
34 Diskette
Floppy Connector Pin Definitions (J26)
5-10 Floppy/Hard Disk and SCSI Connections