INSTALLATIONS
14
MB870 User’s Manual
FDD1: Floppy Drive Connector
FDD1is a slim 26-pin connector and will support up to 2.88MB FDD.
Signal Name
Pin #
Pin #
Signal Name
VCC
1
2
INDEX
VCC
3
4
DRV_SEL
VCC
5
6
DSK_CH
NC
7
8
NC
NC
9
10
MOTOR
DINST
11
12
DIR
NC
13
14
STEP
GND
15
16
WDATA
GND
17
18
WGATE
GND
19
20
TRACK
NC
21
22
WPROT
GND
23
24
RDATA
GND
25
26
SIDE
IDE1, IDE2: EIDE Connectors
IDE1: Primary IDE Connector
Signal Name
Pin #
Pin #
Signal Name
Reset IDE
1
2
Ground
Host data 7
3
4
Host data 8
Host data 6
5
6
Host data 9
Host data 5
7
8
Host data 10
Host data 4
9
10
Host data 11
Host data 3
11
12
Host data 12
Host data 2
13
14
Host data 13
Host data 1
15
16
Host data 14
Host data 0
17
18
Host data 15
Ground
19
20
Protect pin
DRQ0
21
22
Ground
Host IOW
23
24
Ground
Host IOR
25
26
Ground
IOCHRDY
27
28
Host ALE
DACK0
29
30
Ground
IRQ14
31
32
No connect
Address 1
33
34
No connect
Address 0
35
36
Address 2
Chip select 0
37
38
Chip select 1
Activity
39
40
Ground
Summary of Contents for MB870
Page 1: ...MB870 Socket 478 Pentium 4 ATI RS300M Mini ITX USER S MANUAL Version 1 0A ...
Page 4: ...iv MB870 User s Manual This page is intentionally left blank ...
Page 8: ...INTRODUCTION 4 MB870 User s Manual Board Dimensions ...
Page 34: ...INSTALLATIONS 30 MB870 User s Manual This page is intentionally left blank ...