Chapter 6 – XVME-973 Drive Adapter Module
6-3
Caution
The IDE controller supports enhanced PIO modes, which reduce the
cycle times for 16-bit data transfers to the hard drive. Check with your
drive manual to see if the drive you are using supports these modes. The
higher the PIO mode, the shorter the cycle time. As the IDE cable length
increases, this reduced cycle time can lead to erratic operation. As a
result, it is in your best interest to keep the IDE cable as short as
possible.
The PIO modes are selected in the BIOS setup (refer to Chapter 3). The
Autoconfig will attempt to classify the drive connected if the drive
supports the auto ID command. If you experience problems, change the
PIO to standard.
P2 Connector
Pin
A
B
C
1
RES (NC)
+5V
HDRESET*
2
RES (NC)
GND
HD0
3
RES (NC)
RES (NC)
HD1
4
RES (NC)
RES (NC)
HD2
5
RES (NC)
RES (NC)
HD3
6
RES (NC)
RES (NC)
HD4
7
RES (NC)
RES (NC)
HD5
8
RES (NC)
RES (NC)
HD6
9
RES (NC)
RES (NC)
HD7
10
RES (NC)
RES (NC)
HD8
11
RES (NC)
RES (NC)
HD9
12
RES (NC)
GND
HD10
13
RES (NC)
+5V
HD11
14
RES (NC)
RES (NC)
HD12
15
RES (NC)
RES (NC)
HD13
16
RES (NC)
RES (NC)
HD14
17
RES (NC)
RES (NC)
HD15
18
RES (NC)
RES (NC)
GND
19
GND
RES (NC)
DIOW*
20
FRWC*
RES (NC)
DIOR*
21
IDX*
RES (NC)
IORDY
22
MO1*
GND
ALE
23
HDRQ
RES (NC)
IRQ14
24
FDS1*
RES (NC)
IOCS16*
25
HDACK*
RES (NC)
DA0
26
FDIRC*
RES (NC)
DA1
27
FSTEP*
RES (NC)
DA2
28
FWD*
RES (NC)
CS1P*
29
FWE*
RES (NC)
CS3P*
30
FTK0*
RES (NC)
IDEATP*
31
FWP*
GND
FHS*
32
FRDD*
+5V
DCHG*
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