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INSTALLATION GUIDE
WD1004A-WXl Winchester Disk Controller Board FEBRUARY 1989
IDENTIFY DRIVE
The WD1004A-WX1 board works with any hard disk drive that has the ST506/412 drive interface and no more than 1024 cylinders and 16 heads. The Seagate 225 hard disk drive unit is such a drive. Look in your drive manual to verify that you have an ST506/412 MFM drive or check with your dealer. Then check the drive manual for the drive parameters, such as those listed in Table 1-1. You'll need this information for the low level format. Table 1-1 WD1004A-WX1 Default Drive Parameters Formatted Capacity 21MB Number of Heads 4 Number of Cylinders 615 Pre–Comp RWC 307/none Step Rate 75µsec
This board does not work with RLL drives.
WD1004A-WXI Datasheet
