IBM Personal System/2 65 SX User Manual

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System-Board Devices and Features
System-Board I/O Address Map
Performance Specifications ...................
Physical Specifications ..............2........
Declared Acoustical Noise Emission Values
Component Maximum Current
Channel Load Current .....................5.
Voltage Assignments for the Internal Drive
Power-Supply Connectors ...................
System-Board POS I/O Address Map .............
Card-Selected Feedback Register (Hex 0091) .......
System-Board Enable/Setup Register (Hex 0094)
System-Board POS Register 2 (Hex 0102) ..........
Parallel-Port Select Bits .....................
System-Board POS Register 3 (Hex 0103)
System-Board POS Register 4 (Hex 0104)
Memory Card !IDBits ......................
System-Board POS Register 5 (Hex 0105) .........
Memory-Connector Select for POS Register4 ......
Adapter Enable/Setup Register (Hex 0096) ........
Arbitration-Bus Priority Assignments
Arbitration Register, Write to Hex 0090
Arbitration Register, Read Hex 0090
Diskette-Drive Connector .....................
System-Memory Map ..................000.
System-Board Memory Connectors
RT/CMOS RAM Address Map .................
RT/CMOS Address and NMI Mask Register (Hex 0070)
RT/CMOS Data Register (Hex 0071)
Real-Time Clock Bytes
Status RegisterA ....................0.02.
Status RegisterB ..............2..........
Status RegisterC ......................04.
Status RegisterD .....................0..0.2.
Diagnostic-Status Byte .....................
Diskette-Drive-Type Byte ....................
Diskette-Drive-Type Bits (Bits 7-4)
Diskette-Drive-Type Bits (Bits 3-0) ..............
Equipment Byte ...............2..0.. 00000.
Number of Diskette-Drive Bis ................
Display-Operating-Mode Bits
System-Control Port B (Write)
© Copyright IBM Corp. 1989, 1990

IBM Personal System/2 65 SX Specifications

General

Brand	IBM
Model	Personal System/2 65 SX
Category	Desktop
Language	English