Ampro Corporation 486E - Manual (Page 45)

Product Reference
2–29
IDE Hard Disk Interface
The Little Board/486e CPU provides an interface for one or two Integrated Device Electronics (IDE)
hard disk drives. IDE drives, the most popular and cost-effective type of hard drive currently
available, have an internal hard disk controller. There are also many CD-ROM drives designed to
use the IDE interface. If you attach a CD-ROM drive to the IDE port, you need a driver (supplied
by the CD-ROM drive manufacturer) to access the device.
IDE Connector (J12)
The IDE interface appears at connector J12 a 40-pin, dual-row connector. Table 2–25 shows the
interface signals and pin outs for the IDE interface connector. Table 2–26 shows manufacturer’s
part numbers for mating connectors to J12.
Note
For maximum reliability, keep IDE drive cables less than 18 inches
long.