Lenovo ThinkPad 560X TP 560Z Technical Reference Manual - Page 19

System Board, RT/CMOS Address and NMI Mask Register X

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Section 2. System Board Description 2-2 Microprocessor 2-2 Cache Memory Operation 2-2 Cacheable Address Space 2-3 Keyboard/Mouse Connector 2-4 Signals 2-4 Connector 2-4 Scan Codes 2-5 Keyboard ID 2-6 Displayable Characters and Symbols 2-7 Hard Disk Drive Connector 2-8 External Connector 2-9 Diskette Drive and Controller 2-12 Diskette Drive Connector 2-13 Memory 2-14 ROM Subsystem 2-14 RAM Subsystem 2-14 System Memory Map 2-15 System Board Memory Connector for DIMM 2-15 RT/CMOS RAM 2-17 RT/CMOS Address and NMI Mask Register (X'0070') . 2-18 RT/CMOS Data Register (X'0071 2-18 RT/CMOS RAM I/O Operations 2-19 CMOS RAM Configuration 2-23 Miscellaneous System Functions and Ports 2-27 Nonmaskable Interrupt (NMI 2-27 System Control Port B (X'0061 2-28 System Control Port A (X'0092 2-29 Power-On Password 2-30 Selectable Drive-Startup Sequence 2-30 Hardware Compatibility 2-31 Error Codes 2-32 © Copyright IBM Corp. 1998 2-1

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Section 2. System Board
Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2
Microprocessor
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2
Cache Memory Operation
....................
2-2
Cacheable Address Space
....................
2-3
Keyboard/Mouse Connector
. . . . . . . . . . . . . . . . . . . . .
2-4
Signals
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4
Connector
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4
Scan Codes
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5
Keyboard ID
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6
Displayable Characters and Symbols
..............
2-7
Hard Disk Drive Connector
.....................
2-8
External Connector
. . . . . . . . . . . . . . . . . . . . . . . . . .
2-9
Diskette Drive and Controller
...................
2-12
Diskette Drive Connector
.....................
2-13
Memory
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-14
ROM Subsystem
. . . . . . . . . . . . . . . . . . . . . . . .
2-14
RAM Subsystem
. . . . . . . . . . . . . . . . . . . . . . . . .
2-14
System Memory Map
......................
2-15
System Board Memory Connector for DIMM
........
2-15
RT/CMOS RAM
. . . . . . . . . . . . . . . . . . . . . . . . .
2-17
RT/CMOS Address and NMI Mask Register (X
'
0070
'
)
.
2-18
RT/CMOS Data Register (X
'
0071
'
)
............
2-18
RT/CMOS RAM I/O Operations
..............
2-19
CMOS RAM Configuration
.................
2-23
Miscellaneous System Functions and Ports
..........
2-27
Nonmaskable Interrupt (NMI)
.................
2-27
System Control Port B (X
'
0061
'
)
...............
2-28
System Control Port A (X
'
0092
'
)
...............
2-29
Power-On Password
. . . . . . . . . . . . . . . . . . . . . .
2-30
Selectable Drive-Startup Sequence
..............
2-30
Hardware Compatibility
. . . . . . . . . . . . . . . . . . . . . .
2-31
Error Codes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-32
Copyright IBM Corp. 1998
2-1