WD1003S-RAH

USER'S GUIDE WD 1003-RAH WD 1003S-RAH WD 1003-RA2 WD 1003A-RA2 Winchester Disk Controllers Important Information Do not Discard Document Scope This document describes the hardware and software installation of the following Western Digital controllers: WD 1003-RAH WD1003S-RAH WD 1003-RA2 WD 1003A-RA2 Two versions of the WD1003-RA2 are available: Feature 000 (F000). Non-translation operation only Feature 001 (F00l). Translation operation only. The other controllers described in this document have one standard version. These controllers are designed for use in IBM Personal Computer ATs or other AT-compatible computers with a 16-bit data bus. The use of the term controller refers to all boards described within this document. When a reference is made to a particular board, the appropriate WD part number is used. JUMPER W1 W2 W3 W4 W5 W6 WDl003-RAH JUMPER SETTINGS PIN CONNECTS DESCRIPTION 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 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 conf...