Related Manuals for Western Digital WD1004A-27X
Summary of Contents for Western Digital WD1004A-27X
- Page 1 READ THIS FIRST INSTALLATION GUIDE WD1004-27X WD1004A-27X Winchester Disk Controller Boards FEBRUARY 1989...
-
Page 2: Identify Drive
IDENTIFY DRIVE The WD1004-27X and WD1004A-27X boards work with any hard disk drive that has the ST506/412 drive interface and no more than 1024 cylinders and 16 heads. The Seagate 238 hard disk drive unit is such a drive. Look in your drive manual to verify that you have an ST506/412 RLL drive or check with your dealer. - Page 3 IDENTIFY BOARD This document describes the installation of the two controller boards, WD1004- 27X and WD1004A-27X. These controllers are similar functionally, except for a few features. These boards are described below. WD1004-27X Board Figure 1-1 shows the connector locations (J1, J2, J3, J4, and J5) on the WD1004- 27X board and the location of the jumpers (W17 to W22, R23, and W25 to W28).
- Page 4 FIGURE 1-1 WD1004-27X CONNECTOR AND JUMPER LOCATIONS...
- Page 5 FIGURE 1-2 WD1004A-27X CONNECTOR AND JUMPER LOCATIONS...
- Page 6 FIGURE 2-1. DAISY CHAIN CABLE CONNECTIONS 2–5...
- Page 7 W19 & W20 selects factory drive tables for the second hard disk W21 and W22 selects the controller and BIOS address ranges R23 disables the Western Digital BIOS ROM on WD1004 and WD1004A boards W25 and W26 set sector translation and dynamic configuration...
- Page 8 Default Values Tables B-l through B-5 list the jumper settings. Default factory settings are marked with a "†" symbol. Table B-1. Pre-selected Drive Tables Table First Drive Second Drive Capacity Heads Cylinders Number W17 W18 W19 W20 65MB 42MB 21MB †...
- Page 9 Table B-3. Select BIOS ROM Select BIOS selects external BIOS † selects internal BIOS Table B-4. Select Sectors and Configuration Option Table Sectors Translate Dynamic † Table B-5. Select Hardware Interrupt (IRQ) Select IRQ selects IRQ2 † selects IRQ5 B–3...