WD1003A-RA2 - Western Digital

WD1003A-RA2 Disk Controllers User Guide

1-2 OPEN Standard factory setting. Status read is latched. Used for IBM Personal Computer AT if Winchester activity LED is connected to J6. Status read is not latched. Activity LED turns on during drive access. W5 must be jumpered 2 to 3. Used for Compaq hosts. OPEN 1-2 Standard factory setting. Selects primary addresses, 1F0 through 1F7 and 3F0 through .

Features

r AT if Winchester activity LED is connected to J6. Status read is not latched. Activity LED turns on during drive access. W5 must be jumpered 2 to 3. Used for Compaq hosts. OPEN 1-2 Standard factory setting. Selects primary addresses, 1F0 through 1F7 and 3F0 through 3F7 hex. Do not modify the primary address jumper unless your BIOS operating system is configured to accept more than two hard disk drives. Selects secondary addresses, 170 through 177 and 370 through 377 hex. OPEN 1-2 This configuration used with WD11C00C-22 at board location US or if W5 is jumpered 1 to 2. Required only on e.