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Figures
1-1. Model and Submodel Bytes ............... 1-2
1-2. System Board Devices and Features .......... 1-3
1-3. System Board I/O Address Map ............. 1-5
1-4. Performance Specifications . . . . . . . . . . . . . . . . 1-7
1-5. Physical Specifications . . . . . . . . . . . . . . . . . . 1-8
1-6. Electrical Specifications . . . . . . . . . . . . . . . . . . 1-9
1-7. Acoustical Readings . . . . . . . . . . . . . . . . . . . . 1-9
1-8. Power Supply Maximum Current ........... 1-10
1-9. Voltage Pin Assignments for the 56W AC Adapter . 1-11
1-10. Lithium-ion Battery Pack Specifications ........ 1-12
2-1. Keyboard and Mouse Signals .............. 2-4
2-2. Keyboard/Mouse Connector Pin Assignments ..... 2-4
2-3. Key Numbers for the 84-Key Keyboard ......... 2-5
2-4. Key Numbers for the 85-Key Keyboard ......... 2-6
2-5. Key Numbers for the External Numeric Keypad .... 2-7
2-6. Hard Disk Drive Connector Pin Assignments ..... 2-8
2-7. 240-Pin External Bus Connector Pin Assignments . 2-11
2-8. UltraBay II Connector Pin Assignments ........ 2-13
2-9. Diskette Drive Read, Write, and Format Capabilities 2-15
2-10. System Memory Map .................. 2-17
2-11. DIMM Adapter Card Memory Connector Pin
Assignments . . . . . . . . . . . . . . . . . . . . . . . 2-18
2-12. RT/CMOS RAM Address Map ............. 2-19
2-13. RT/CMOS Address and NMI Mask Register (Hex
0070) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2-14. RT/CMOS Data Register (Hex 0071) ......... 2-20
2-15. Real-Time Clock Bytes (Hex 000–00D) ........ 2-22
2-16. Status Register A (Hex 00A) .............. 2-22
2-17. Status Register B (Hex 00B) .............. 2-23
2-18. Status Register C (Hex 00C) .............. 2-24
2-19. Status Register D (Hex 00D) .............. 2-24
2-20. Diagnostic Status Byte (Hex 00E) ........... 2-25
2-21. Diskette Drive Type Byte (Hex 010) .......... 2-26
2-22. Diskette Drive Type Bits 7–4 .............. 2-26
2-23. Hard Disk Type Byte (Hex 011) ............ 2-26
2-24. Hard Disk Drive Type 2 (Bits 7–4) ........... 2-26
2-25. Hard Disk Drive Type 3 (Bits 3–0) ........... 2-26
2-26. Hard Disk Drive Type Byte ............... 2-27
2-27. Equipment Byte . . . . . . . . . . . . . . . . . . . . . 2-27
2-28. Installed Diskette Drive Bits .............. 2-27
2-29. Display Operating Mode Bits .............. 2-27
Copyright IBM Corp. 1997 vii