IBM Personal System/2 65 SX - Table of Contents

Contents
Section1. System Overview ........................ 1-1
Description ......... 0.0.0.0 0. eee eee 1-3
System-Board Features ...............00 0.000 eeee 1-3
System-Board I/O Address Map ...................... 1-5
Specifications .......... 0... 0... eee ee 1-6
| Power Supply .......0.. 0.0.0.0... 000 0c eee ee eee 1-9
| Outputs .........0 0.00.00... ee 1-9
| Output Protection .........-..... 0.0.0.0... 0000 1-10
| Power Supply Connectors ....................... 1-10
Section 2. Programmable Option Select ................. 2-1
Description ..... 0.0.0.0... 00.00 ce en 2-3
System-Board POS Address Map ..................... 2-5
Card-Selected Feedback ....................0...000, 2-5
System-Board Setup ............. 00.0... 00000 cee 2-6
System-Board Enable/Setup Register (Hex 0094) ......... 2-7
System-Board POS Register 2 (Hex 0102) ...........0., 2-8
System-Board POS Register 3 (Hex 0103) .............. 2-9
System-Board POS Register 4 (Hex 0104) ...........0., 2-9
System-Board POS Register 5 (Hex 0105) ............. 2-10
Adapter Setup ..... 0... 0.0... cee ee 2-12
Section 3. System Board ........................0... 3-1
Description ........000 00.00.00 2 ce een 3-3
Microprocessor and Math Coprocessor ................. 3-3
| Micro Channel Implementation ....................... 3-3
| ExceptionReporting ................0.0...0000000, 3-3
Central Arbiter ..........0..0 0.00000. eee ee 3-3
Micro Channel Connectors ....................00., 3-6
Diskette-Drive Controller .....................00000,4 3-6
Memory ..........0 0.0 ee eee ee 3-7
ROM Subsystem ............... 0.0.00 200 020 en 3-7
RAM Subsystem .........0.0.0.0. 0.00000 eee een 3-8
Error Recovery ............ 0.000 eee eee ee 3-9
System-Memory Map ................. 00000000 eee 3-9
System-Board Memory Connectors ................. 3-11
RT/CMOS RAM ........... 2.000002 eee es 3-12
Miscellaneous System Functions and Ports .............. 3-22
Nonmaskable Interrupt ....................0000.0, 3-22
System-Control Port B (Hex 0061) ..........0..0...,. 3-23
System-Control Port A (Hex 0092)
Power-On Password
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