User manual IBM THINKPAD 560Z - Supplementary Guide

xxxxxxx xxxx-xxxx-xx Note Before using this information and the product it supports, be sure to read the general information under "Notices" on page B-1. First Edition (October 1998) The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with local law: INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied warranties in certain transactions; therefore, this statement may not apply to you. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements or changes in the products or the programs described in this publication at any time. Requests for technical information about IBM products should be made to your IBM Authorized Dealer or your IBM Marketing Representative. © Copyright International Business Machines Corporation 1998. All rights reserved. Note to U.S. Government Users -- Documentation related to restricted rights -- Use, duplication or disclosure is subject to restrictions set forth in GSA ADP Schedule Contract with IBM Corp. Contents Preface ................................. ... ... .. ... ... ... ... ... ... ... ... ... ... ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Section 1. System Overview . . . Description .............. System Board Devices and Features System Board I/O Address Map . . Specifications . . . . . . . . . . . . . Performance Specifications . . . Physical Specifications . . . . . . ....... Acoustical Readings Power Supply . . . . . . . . . . . . . Voltages . . . . . . . . . . . . . . Output Protection . . . . . . . . . Voltage Sequencing . . . . . . . . Power Supply Connector . . . . . ............. Battery Pack 1-1 1-2 1-3 1-5 1-7 1-7 1-8 1-9 1-10 1-10 1-11 1-11 1-11 1-12 2-1 2-2 2-2 2-2 2-3 2-4 2-4 2-4 2-5 2-6 2-7 2-8 2-9 2-12 2-13 2-14 2-14 2-14 2-15 2-15 2-17 2-27 2-27 2-28 Section 2. System Board . . . . . . . . . . . Description .................... Microprocessor . . . . . . . . . . . . . . . . . . Cache Memory Operation . . . . . . . . . . Cacheable Address Space . . . . . . . . . . Keyboard/Mouse Connector . . . . . . . . . . . Signals . . . . . . . . . . . . . . . . . . . . . Connector ................... Scan Codes . . . . . . . . . . . . . . . . . . Keyboard ID . . . . . . . . . . . . . . . . . . Displayable Characters and Symbols . . . . Hard Disk Drive Connector . . . . . . . . . . . External Connector . . . . . . . . . . . . . . . . Diskette Drive and Controller . . . . . . . . . . Diskette Drive Connector . . . . . . . . . . . . Memory . . . . . . . . . . . . . . . . . . . . . . ROM Subsystem ............... RAM Subsystem . . . . . . . . . . . . . . . . System Memory Map . . . . . . . . . . . . . System Board Memory Connector for DIMM RT/CMOS RAM . . . . . . . . . . . . . . . . Miscellaneous System Functions and Ports . Nonmaskable Interrupt (NMI) . . . . . . . . System Control Port B (X'0061') . . . . . . . . . . . . . . . . . . . © Copyright IBM Corp. 1998 iii System Control Port A (X'0092') . Power-On Password . . . . . . . . Selectable Drive-Startup Sequence Hardware Compatibility . . . . . . . . Error Codes . . . . . . . . . . . . . . . Section 3. Subsystems . . . . . Video Subsystem . . . . . . . . . . Video Modes . . . . . . . . . . . Audio Subsystem . . . . . . . . . . Sound Blaster Support Function Audio Port Specifications . . . . Infrared (IR) Subsystem . . . . . . PC Card Subsystem . . . . . . . . Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29 2-30 2-30 2-31 2-32 3-1 3-2 3-3 3-5 3-5 3-5 3-6 3-7 3-8 Appendix A. System Management API (SMAPI) BIOS Overview .......................... What Is SMAPI BIOS? . . . . . . . . . . . . . . . . . . . . Header Image . . . . . . . . . . . . . . . . . . . . . . . . . Calling Convention . . . . . . . . . . . . . . . . . . . . . . Parameter Structure ................... Calling Convention Pseudo Code . . . . . . . . . . . . Return Codes . . . . . . . . . . . . . . . . . . . . . . . . . Function Description . . . . . . . . . . . . . . . . . . . . . System Information Service . . . . . . . . . . . . . . . System Configuration Service . . . . . . . . . . . . . . Power Management Service . . . . . . . . . . . . . . . Event Bit Definition . . . . . . . . . . . . . . . . . . . . Samples . . . . . . . . . . . . . . . . . . . . . . . . . . Function Declaration . . . . . . . . . . . . . . . . . . . Installation Check . . . . . . . . . . . . . . . . . . . . . BIOS Call . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix B. Notices Trademarks . . . . . . Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 A-3 A-4 A-6 A-6 A-9 A-11 A-12 A-12 A-21 A-28 A-33 A-52 A-56 A-57 A-61 B-1 B-2 X-1 ........................ ........................ .................................. iv Preface This technical reference contains hardware and software interface information specific to the IBM ThinkPad 560Z computer. This technical reference is intended for those who develop hardware and software products for the computer. Users should understand computer architecture and programming concepts. This publication consists of the following sections and appendixes: Section 1, "System Overview," describes the system, features, and specifications. Section 2, "System Board," describes the system-specific hardware implementations. Section 3, "Subsystems," describes the hardware functions specific to the ThinkPad 560Z computers. Appendix A, "System Management API (SMAPI) BIOS Overview," describes the system software interface built into the system, called the System Management Application Program Interface (SMAPI) BIOS, which controls the system information, system configuration, and power management features of the ThinkPad system. Appendix B, "Notices," contains special notices and trademark information. An index is also included. This technical reference should be used with the following publications: IBM Personal System/2 Hardware Interface Technical Reference IBM Personal System/2 and Personal Computer BIOS Interface These publications contain additional information on many of the subjects discussed in this technical reference. Information about diskette drives, hard disk drives, adapters, and external options are in separate technical references. © Copyright IBM Corp. 1998 v Attention The term Reserved describes certain signals, bits, and registers that should not be changed. Use of reserved areas can cause compatibility problems, loss of data, or permanent damage to the hardware. When the contents of a register are changed, the state of the reserved bits must be preserved. If possible, read the register first and change only the bits that must be changed. vi ThinkPad 560Z Preface Section 1. System Overview Description .............. System Board Devices and Features System Board I/O Address Map . . Specifications . . . . . . . . . . . . . Performance Specifications . . . Physical Specifications . . . . . . Acoustical Readings ....... Power Supply . . . . . . . . . . . . . Voltages . . . . . . . . . . . . . . Output Protection . . . . . . . . . Voltage Sequencing . . . . . . . . Power Supply Connector . . . . . Battery Pack ............. .. . .. .. .. .. .. .. .. .. .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1-3 1-5 1-7 1-7 1-8 1-9 1-10 1-10 1-11 1-11 1-11 1-12 © Copyright IBM Corp. 1998 1-1 Description The IBM Personal System/2 Hardware Interface Technical Reference describes devices common to the PS/2 AT-bus system family. The IBM ThinkPad 560Z computer (hereafter called the 560Z, ThinkPad computer, or computer) is a notebook-size computer that features the AT* bus architecture. Each computer supports one external diskette drive and one internal hard disk drive. Programs can distinguish the foregoing models of computers from other ThinkPad models by reading the system ID: Interrupt X'15', function code (AH)=X'23', (AL)=X'10', returns (AL)=X'37' for the 560Z. The system microprocessor contains an internal cache and cache controller. Figure 1-1 lists the model bytes, submodel bytes, and system clock speed of the system board. Model 560Z Model Byte (Hex) FC Submodel Byte (Hex) 01 System Clock 66 MHz Figure 1-1. Model and Submodel Bytes For a listing of the other systems, refer to the IBM Personal System/2 and Personal Computer BIOS Interface. 1-2 ThinkPad 560Z System Overview System Board Devices and Features Figure 1-2 lists the system board devices and their features. The IBM Personal System/2 Hardware Interface Technical Reference describes devices common to PS/2 products by type number. Device Microprocessor Type ­ Features Intel® Mobile Pentium® II Processor 233/300 MHz 32 KB on-chip cache Level 2 cache System timers ­ 1 512 KB Channel 0: system timer Channel 1: refresh generation Channel 2: tone generator for speaker 128 KB by 4 banks (1 KB equals 1024 bytes) 32 MB. Expandable up to 96 MB. 64 MB. Expandable up to 128 MB. CMOS RAM subsystem ­ 128 bytes CMOS RAM with real-time clock/calendar ROM subsystem RAM subsystem ­ ­ Figure 1-2 (Part 1 of 2). System Board Devices and Features ThinkPad 560Z System Overview 1-3 Device Video subsystem Type ­ Features SVGA video functions: Up to 16,777,216 colors on the TFT LCD and an external display See "Video Subsystem" on page 3-2 for more details of the video subsystem. Seven DMA channels (AT compatible) Four 8-bit channels and three 16-bit channels 15 levels of system interrupts (interrupts are edge-triggered) Internal keyboard TrackPoint Press-to-Select Auxiliary device connector Password security Supports: 3.5-in. diskette (1.44 MB) 3.5-in. diskette (1.2 MB) (Japan-unique) 3.5-in. diskette (720 KB) DMA controller Interrupt controller Keyboard/auxiliary device controller 1 1 1 Diskette drive controller 2 Hard disk controller Serial controller port Parallel controller port ­ 2 Supports IDE controller EIA-232-E interface (16550 compatible) Programmable as serial port 1, 2, 3, or 4 One 9-pin, D-sub connector Programmable as parallel port 1, 2, or 3 IEEE P1284-A compatible Supports bidirectional input and output Enhanced Parallel Port (EPP) compatible Extended Capabilities Port (ECP) compatible Supports externally attached devices: Port replicator Port replicator with Advanced EtherJet Feature 1 Expansion bus adapter ­ PC Card slots ­ Conforms to the standards and specifications listed in Figure 3-3 on page 3-8 Two Type I or II PC cards One Type III PC card Sound Blaster**-Pro compatible Supports: IrDA 1.1 Supports: USB input and output devices Audio subsystem Infrared subsystem Universal serial bus (USB) ­ ­ ­ Figure 1-2 (Part 2 of 2). System Board Devices and Features 1-4 ThinkPad 560Z System Overview System Board I/O Address Map Figure 1-3 shows the I/O address map. Address (Hex) 0000­001F 0020, 0021 002E, 002F a 0040, 0043 0060 0061 0062 0064 0066 0070 0071 0072, 0073 0080­008F 0092 00A0, 00A1 00B2, 00B3 b 00C0­00DF 00F0 0170­0177 01F0­01F7 0201 0220­022F 0230­023F 0240­024F 0250­025F 0278­027F 02E8­02EF 02F8­02FF 0300­0301 0310­0311 0320­0321 0330­0331 0370­0375 0376 0377 0378­037F 0388­038B Device DMA controller 1 Interrupt controller 1 (Master) Super I/O configuration registers Timer counter 1 Keyboard, auxiliary device System control port B Power management controller Keyboard, auxiliary device Power management controller NMI mask and RTC address RTC data RTC/CMOS Extended DMA page registers System control port A Interrupt controller 2 (slave) Advanced power management port DMA controller 2 Coprocessor error IDE Secondary IDE Primary Game port (Joy Stick) Audio port - Sound Blaster 1 Audio port - Sound Blaster 2 Audio port - Sound Blaster 3 Audio port - Sound Blaster 4 Parallel port 3 - LPT3 or EPP/ECP Serial port 4 - COM4 (IR) Serial port 2 - COM2 (IR) Audio port - MIDI (MPU-401) 1 Audio port - MIDI (MPU-401) 2 Audio port - MIDI (MPU-401) 3 Audio port - MIDI (MPU-401) 4 FDC secondary IDE secondary FDC secondary Parallel port 2 - LPT2 or EPP/ECP Audio port - Adlib (FM synthesizer) Figure 1-3 (Part 1 of 2). System Board I/O Address Map ThinkPad 560Z System Overview 1-5 Address (Hex) 03B4, 03B5, 03BA 03BC­03BF 03C0­03C5 03C6­03C9 03D4, 03D5, 03DA, 03E0­03E3 03E8­03EF 03F0­03F5 03F6 03F7 03F8­03FF 04D0, 04D1 b 0534­0537 0538­053F 0608­060B 0678­067A 0778­077A 07BC­07BE 0CF8­0CFB 0CF9 b 0CFC­0CFF 0D38­0D3F 0E84­0E87 0E88­0E8F 0F44­0F47 0FF0­0FF7 15E0­15EF 8000­801F EF00­EF37 EF00­EF3F EFA0­EFAD EFA0­EFAF Device Video subsystem Parallel port 1 - LPT1 or ECP Video subsystem Video DAC Video subsystem PC Card interface Serial port 3 - COM3 FDC primary IDE primary FDC primary Serial port 1 - COM1 Interrupt controller edge/level control Audio port - WSS-1 Audio port - Control port-1 Audio port - WSS-2 Parallel port 3 - ECP Parallel port 2 - ECP Parallel port 1 - ECP PCI configuration address register Reset control register PCI configuration data register Audio port - control port-2 Audio port - WSS-3 Audio port - control port-3 Audio port - WSS-4 Audio port - control port-4 Power management register USB I/O space register Power management I/O register Power management register SMBus I/O space register SMBus I/O space register a NS PC97338 unique registers; b Intel PIIX4E unique registers Figure 1-3 (Part 2 of 2). System Board I/O Address Map 1-6 ThinkPad 560Z System Overview Specifications Figure 1-4 to Figure 1-7 on page 1-9 list the specifications for the computer. Performance Specifications Device Microprocessor (66 MHz­15 ns clock) Access to RAM: Memory read Page hit, burst Page miss, burst Memory write Page miss, burst Access to ROM: Refresh rate (typically performed every 15.6 µs) DMA controller (4 MHz­250 µs clock): Bus cycles (AT): 8 bit 16 bit Cycle Time (ns) 135 ns 255 ns 45 ns 1000 750 (minimum) 1250 1000 625 The cycle times shown for access to system-board RAM are based on 60-ns EDO memory. Figure 1-4. Performance Specifications for the ThinkPad 560Z ThinkPad 560Z System Overview 1-7 Physical Specifications Size Width: 297 mm (11.7 in.) Depth: 222 mm (8.7 in.) Height: 31.0 mm (1.22 in.) Weight (approximate value) 2640-9xx model: 1.86 kg (4.10 lb) 2640-Bxx model: 1.90 kg (4.20 lb) Air Temperature System on (without diskette) 5.0°C to 35.0°C (41°F to 95°F) System on (with diskette) 10.0°C to 35.0°C (50°F to 95°F) System off 5.0°C to 43.0°C (41°F to 110°F) Humidity System (without diskette) 8% to 95% System (with diskette) 8% to 80% Maximum altitude : 3048 m (10 000 ft) in unpressurized conditions Heat output: 35 W (119.4 BTUs/hour) at maximum configuration Acoustical readings (see Figure 1-7 on page 1-9) Electrical (see Figure 1-6 on page 1-9) Electromagnetic compatibility: FCC class B With battery pack installed. This is the maximum altitude at which the specified air temperatures apply. At higher altitudes, the maximum air temperatures are lower than those specified. Figure 1-5. Physical Specifications for the ThinkPad 560Z 1-8 ThinkPad 560Z System Overview Electrical Specifications Input Voltage (V ac) Frequency (Hz) Input (kVA) (56 W) 100­240 50/60 0.132 Range is automatically selected; sine wave input is required. At maximum configuration. Figure 1-6. Electrical Specifications for the ThinkPad 560Z Acoustical Readings LWAd in bels Operate Idle 3.7 3.5 LpAm in dB Operate Idle 30 28 m in dB Operate Idle 27 26 Notes: LWAd LpAm m Operate Is the declared sound power level for the random sample of machines. Is the mean value of the A-weighted sound pressure levels at the operator position (if any) for the random sample of machines. Is the mean value of the A-weighted sound pressure levels at the one-meter position for the random sample of machines. Shows the value while using the hard disk drive. All measurements made in accordance with ANSI S12.10 and reported in conformance with ISO 9296. Figure 1-7. Acoustical Readings for the ThinkPad 560Z ThinkPad 560Z System Overview 1-9 Power Supply The power supply converts the ac voltage to dc voltage and provides power for the following: System board set Diskette drive Hard disk drive Auxiliary devices Keyboard LCD panel PC Card cards Voltages The power supply generates five different dc voltages: VCCCPU, VCC3A, VCC5M, VCCSW, and VCC12M. Figure 1-8 shows the maximum current for each voltage. Output VCCCPU VCC3A VCC5M VCCSW VCC12M Voltage (V dc) +1.7 or +1.6 +3.3 +5.0 +5.0 +12.0 Current (A) 2.20 2.00 3.00 0.01 0.11 Figure 1-8. Power Supply Maximum Current 1-10 ThinkPad 560Z System Overview Output Protection A short circuit placed on any dc output (between outputs or between an output and a dc return) latches all dc outputs into a shutdown state, with no hazardous condition to the power supply. If an overvoltage fault occurs in the power supply, the power supply latches all dc outputs into a shutdown state before any output exceeds 135% of the nominal value of the power supply. Voltage Sequencing When power is turned on, the output voltages reach their operational voltages within 2 seconds. Power Supply Connector The following connector is used with the AC Adapter. The total power capacity of this connector must not exceed 4.0 A. 2 1 Refer to Figure 1-9 for the appropriate adapter pin assignments. Pin 1 2 Voltage +7.0 V dc to +16.0 V dc (depending on charging conditions) Ground Figure 1-9. Voltage Pin Assignments for 56-W AC Adapter ThinkPad 560Z System Overview 1-11 Battery Pack The ThinkPad computer uses a lithium-ion (Li-ion) battery pack that meets the following electrical specifications: Nominal Voltage Capacity (average) Protection +10.8 V dc 2.2 ampere hours (AH) Overcurrent protection Overvoltage protection Overdischarge protection Thermal protection Figure 1-10. Battery Pack Specifications 1-12 ThinkPad 560Z System Overview Section 2. System Board Description ............................ Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . Cache Memory Operation . . . . . . . . . . . . . . . . . . Cacheable Address Space . . . . . . . . . . . . . . . . . . Keyboard/Mouse Connector . . . . . . . . . . . . . . . . . . . Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connector ........................... Scan Codes . . . . . . . . . . . . . . . . . . . . . . . . . . Keyboard ID . . . . . . . . . . . . . . . . . . . . . . . . . . Displayable Characters and Symbols . . . . . . . . . . . . Hard Disk Drive Connector . . . . . . . . . . . . . . . . . . . External Connector . . . . . . . . . . . . . . . . . . . . . . . . Diskette Drive and Controller . . . . . . . . . . . . . . . . . . Diskette Drive Connector . . . . . . . . . . . . . . . . . . . . Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....................... ROM Subsystem RAM Subsystem . . . . . . . . . . . . . . . . . . . . . . . . System Memory Map . . . . . . . . . . . . . . . . . . . . . System Board Memory Connector for DIMM ....... RT/CMOS RAM . . . . . . . . . . . . . . . . . . . . . . . . RT/CMOS Address and NMI Mask Register (X'0070') RT/CMOS Data Register (X'0071') . . . . . . . . . . . RT/CMOS RAM I/O Operations . . . . . . . . . . . . . CMOS RAM Configuration . . . . . . . . . . . . . . . . Miscellaneous System Functions and Ports ......... Nonmaskable Interrupt (NMI) . . . . . . . . . . . . . . . . System Control Port B (X'0061') . . . . . . . . . . . . . . System Control Port A (X'0092') . . . . . . . . . . . . . . Power-On Password . . . . . . . . . . . . . . . . . . . . . Selectable Drive-Startup Sequence . . . . . . . . . . . . . Hardware Compatibility . . . . . . . . . . . . . . . . . . . . . Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2-2 2-2 2-3 2-4 2-4 2-4 2-5 2-6 2-7 2-8 2-9 2-12 2-13 2-14 2-14 2-14 2-15 2-15 2-17 2-18 2-18 2-19 2-23 2-27 2-27 2-28 2-29 2-30 2-30 2-31 2-32 © Copyright IBM Corp. 1998 2-1 Description This section describes the microprocessor, connectors, memory subsystems, and miscellaneous system functions and ports for the ThinkPad computers. You can find additional information about these topics in IBM Personal System/2 Hardware Interface Technical Reference­AT-Bus Subsystems. Microprocessor The ThinkPad 560Z computer uses the Intel® Mobile Pentium® II 233-MHz or 300-MHz processor with MMXTM technology. The processor has a 32-bit address bus and a 64-bit data bus. It is software-compatible with all previous microprocessors. The processor has an internal, split data and instruction, 32-KB write-back cache. It includes pipelined math coprocessor functions and superscalar architecture (two execution units). Cache Memory Operation The cache memory in the Intel Pentium microprocessor enables the microprocessor to read instructions and data much faster than if the microprocessor had to access system memory. When an instruction is first used or data is first read or written, it is transferred to the cache memory from main memory. This enables future accesses to the instructions or data to occur much faster. The cache is disabled and empty when the microprocessor comes out of the reset state. The cache is tested and enabled during the power-on self-test (POST). The cache memory in the Intel Pentium microprocessor is loaded from system memory in 32-byte increments, each referred to as a cache line. A cache line is aligned on a paragraph boundary. A reference to any byte contained in a cache line results in the entire line being read into the cache memory (if the data was not already in the cache). When the microprocessor gives up control of the system bus, the cache memory enters "snoop" mode and monitors all write and read operations. If memory data is written to a location in the cache and the cache line is in the "modified" state, the corresponding cache line is written back to system memory and is invalidated. 2-2 ThinkPad 560Z System Board When the microprocessor performs a memory read, the data address is used to find the data in the cache. If the data is found (a hit), it is read from the cache memory and no external bus cycle occurs. If the data is not found (a miss), an external bus cycle is used to read the data from system memory. If the address of the missed data is in a cacheable address space, the data is stored in the cache memory and the remainder of the cache line is read. When the microprocessor performs a memory write, the data address is used to search the cache. If the address is found (a hit), the data is written to the cache and no external bus cycle is used to write the data to system memory. (If the address of the write operation was not in the cache memory but was in cacheable address space, the data is read back into the cache memory and the remainder of the cache line is read.) Cacheable Address Space Cacheable address space is defined as system memory that resides on the system board (0­640 KB and 1 MB­96 MB or 128 MB). Cacheability of system memory is up to 512 MB in the L2 cache, and is up to 4 GB in the on-chip L1 cache. Nothing in address range X'A0000'­X'BFFFF', I/O address space, or memory in any AT slot is cached. ROM address space (X'C0000'­X'C9FFF' and X'F0000'­X'FFFFF') is cacheable for code read operations only. If data in this address range is already in cache memory and the address range is written to, the cached line is invalidated and is read again from RAM (in which the BIOS is shadowed in). ThinkPad 560Z System Board 2-3 Keyboard/Mouse Connector Each ThinkPad computer has a keyboard/mouse connector where the IBM mouse, keyboard, or numeric keypad is connected. Signals The keyboard and mouse signals are driven by open-collector drivers pulled to 5 V dc through a pull-up resistor. Figure 2-1 lists the signals. Sink current High-level output voltage Low-level output voltage High-level input voltage Low-level input voltage 20 mA 5.0 V dc minus pullup 0.5 V dc 2.0 V dc 0.8 V dc Maximum Minimum Maximum Minimum Maximum Figure 2-1. Keyboard and Mouse Signals Connector The keyboard/mouse connector uses a 6-pin, miniature DIN connector. 6 4 2 1 5 3 Pin 1 2 3 4 5 6 I/O I/O I/O ­ ­ I/O I/O Signal Name Mouse Data Keyboard Data Ground +5 V dc Mouse Clock Keyboard Clock Figure 2-2. Keyboard/Mouse Connector Pin Assignments Note: The maximum current for +5 V dc (pin 4) is 0.5 A for both the mouse and the numeric keypad. 2-4 ThinkPad 560Z System Board Scan Codes Figure 2-3 shows the key numbers assigned to keys on the 84-key keyboard (for the U.S. and Japan). Figure 2-4 on page 2-6 shows the key numbers assigned to keys on the 85-key keyboard (for countries other than the U.S. and Japan). For scan codes assigned to each numbered key, refer to the IBM Personal System/2 Hardware Interface Technical Reference. 110 112 113 114 115 116 117 118 119 120 124 121 125 122 126 123 75 76 80 81 85 86 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 43 44 46 47 48 49 50 51 52 53 54 55 57 Fn 58 60 61 62 64 79 83 84 89 Left Right Figure 2-3. Key Numbers for the 84-Key Keyboard ThinkPad 560Z System Board 2-5 110 112 113 114 115 116 117 118 119 120 124 121 125 122 126 123 75 76 80 81 85 86 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 43 30 31 32 33 34 35 36 37 38 39 40 41 42 44 45 46 47 48 49 50 51 52 53 54 55 57 Fn 58 60 61 62 64 79 83 84 89 Left Right Figure 2-4. Key Numbers for the 85-Key Keyboard Keyboard ID The keyboard ID consists of 2 bytes: X'83AB' (the built-in keyboard with the external numeric keypad) or X'84AB' (the built-in keyboard only). Interrupt X'16', function code (AH)=X'0A', returns the keyboard ID. 2-6 ThinkPad 560Z System Board Figure 2-5 shows the key numbers assigned to keys on the external numeric keypad. For scan codes assigned to each numbered key, refer to the IBM Personal System/2 Hardware Interface Technical Reference. 90 95 100 105 91 96 101 106 92 97 102 93 98 103 108 99 104 Figure 2-5. Key Numbers for the External Numeric Keypad Displayable Characters and Symbols For displayable characters and symbols that are keyable from the keyboard, refer to the IBM Personal System/2 Hardware Interface Technical Reference. ThinkPad 560Z System Board 2-7 Hard Disk Drive Connector The hard disk drive connected to the system board is removable. The following shows the pin assignments for the connector on the hard disk drive. Note: The pin position A, B, C, and D are not used by the ThinkPad 560Z computer. Pin 1 2 3 4 5 6 7 8 9 10 11 12 Signal -RESET GND DD07 DD08 DD06 DD09 DD05 DD10 DD04 DD11 DD03 DD12 Description Reset Ground Data 7 Data 8 Data 6 Data 9 Data 5 Data 10 Data 4 Data 11 Data 3 Data 12 Pin 23 24 25 26 27 28 29 30 31 32 33 34 Signal -DIOW GND -DIOR GND IORDY CSEL -DMACK GND INTRQ ­ DA01 -PDIAG* DA00 DA02 -CS0 -CS1 -DASP GND +5V +5V GND ­ Description I/O Write Ground I/O Read Ground I/O Ready Cable Select DMA Acknowledgment Ground Interrupt Request Not connected Address 1 Passed diagnostics (slave drive) Address 0 Address 2 Chip Select 0 Chip Select 1 Drive Activity /Slave drive present Ground +5V dc +5V dc Ground Not connected 13 14 15 16 17 DD02 DD13 DD01 DD14 DD00 Data Data Data Data Data 2 13 1 14 0 35 36 37 38 39 18 19 (20) 21 22 DD15 GND Key DMARQ GND Data 15 Ground Not connected DMA request Ground 40 41 42 43 44 Note: * -PDIAG is not used by the ThinkPad 560Z computer. Figure 2-6. Hard Disk Drive Connector Pin Assignments 2-8 ThinkPad 560Z System Board External Connector The Port Replicator is connected through the 200-pin external connector at the bottom of the computer. This connector is installed on the system board and has the following pin assignments: Type Legend: A: Audio signal F: Diskette drive signal G: Ground I: Interrupt request signal J: Joy stick signal K: Keyboard/Mouse signal PB: Serial port signal Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Signal Ground Suspend Power Good ac/dc Power ac/dc Power ac/dc Power ac/dc Power -Suspend Status Ground Line In Left +5V Line Out Left Analog Ground Ground Data Rate Select 1 -Drive Select 1 -Docking SMI -MOTOR ENABLE 0 -Direction In -Step Write Data -Write Enable -Head 1 Select PC: Power control signal PM: Power Management signal PR: Parallel port signal PW: Power line S: Serial port signal U: USB signal V: Video signal Type G PC PW PW PW PW PM G A PW A A G F F PM G G G G G G Pin 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Signal Docking Type Select -External Power Good Mouse Data Mouse Clock Ground -PME USB_OC1 Ground -Ring Indicator Clear to Send Request to Send Data Set Ready Ground Ground -AUTO FD XT -ERROR -INIT -SLCT IN Data Bit 4 Data Bit 6 -ACK PE Type PM PC K K G PM U G S S S S G G PR PR PR PR PR PR PR PR Figure 2-7 (Part 1 of 3). 200-Pin External Connector Pin Assignments ThinkPad 560Z System Board 2-9 Pin 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 Signal Ground Red Blue Hsync Vsync Ground Ground Power Good ac/dc Power ac/dc Power ac/dc Power ac/dc Power -Power On Ground Line In Right +5V Line Out Right Ground Monitor ID 2 -INDEX SMB_CLK SMB_DATA -Track 0 Monitor ID 0 -Write Protect Read Data -DRV2 -Diskette Change Ground +5V Keyboard Data Keyboard Clock Ground USBP1+ USBP1- Ground Data Terminal Ready Transmit Data Receive Data Data Carrier Detect Type G V V V V G G PC PW PW PW PW PW G A PW A G V F PM PM F V F F F F G PW K K G U U G S S S S Pin 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 Signal Ground -STROBE Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 5 Data Bit 7 BUSY SLCT Ground -Video Powerdown Green DDC Data DDC Clock Ground Ground -PCIRST -PREQ Ground AD:31 AD:29 AD:27 AD:25 Ground C_BE:3 AD:23 AD:21 AD:19 AD:17 Ground -IRDY Ground -DEVSEL Ground -LOCK NC -SERR Ground C_BE:1 Type G PR PR PR PR PR PR PR PR PR G V V V V G G PB PB G PB PB PB PB G PB PB PB PB PB G PB G PB G PB ­ PB G PB Figure 2-7 (Part 2 of 3). 200-Pin External Connector Pin Assignments 2-10 ThinkPad 560Z System Board Pin 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 Signal AD:15 AD:13 AD:11 AD:9 Ground AD:7 AD:5 AD:3 AD:1 Ground -PMERI Docking Speaker NC -Suspend Not Reset Ground IRQ:4 IRQ:7 IRQ:10 IRQ:12 -INTA JAB1 JBB1 JACX JBCX MIDI_IN Ground Ground PCICLK Ground -GNT Ground AD:30 AD:28 AD:26 AD:24 Ground AD:22 AD:20 Type PB PB PB PB G PB PB PB PB G PM A ­ PC G I I I I I J J J J A G G PB G PB G PB PB PB PB G PB PB Pin 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 Signal AD:18 AD:16 C_BE:2 Ground +FRAME Ground -TRDY Ground -STOP Ground PAR Ground AD:14 AD:12 AD:10Bit 0 AD:8 C_BE:0 Ground AD:6 AD:4 AD:2 AD:0 Ground -CLKRUN -Docking Enable Ground IRQ:3 IRQ:5 IRQ:9 IRQ:11 IRQ:15 -INTB JAB2 JBB2 JACY JBCY MIDI_OUT Docking Status Type PB PB PB G PB G PB G PB G PB G PB PB PB PB PB G PB PB PB PB G PB PC G I I I I I I J J J J A PM Figure 2-7 (Part 3 of 3). 200-Pin External Connector Pin Assignments ThinkPad 560Z System Board 2-11 Diskette Drive and Controller Figure 2-8 shows the read, write, and format capabilities of the diskette drive for the ThinkPad computer. Format Size Diskette Type 3.5-inch 1.0 MB Diskette 3.5-inch 2.0 MB Diskette Legend: : 1 KB (kilobyte) 1 MB (megabyte) R W F 1024 bytes 1,048,576 bytes Read Write Format 720 KB RWF - 1.2 MB - RWF 1.44 MB - RWF Figure 2-8. Diskette Drive Read, Write, and Format Capabilities 2-12 ThinkPad 560Z System Board Diskette Drive Connector The external diskette drive is connected through the diskette drive connector, on the left side of the computer. Figure 2-9 shows the pin assignments of the connector: 25 1 26 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Signal GND DRATE1 VCC5B ­ GND ­ GND -INDEX ­ ­ -DRVSEL0 DRATE0 -MOTEN0 ­ -FDIR -FSTEP WRDATA -FWREN GND -TRAK0 ­ -FWPROTECT RDDATA -FSIDE1SEL ­ -DISKCHG 2 Type Ground Data Rate Select 1 +5V dc Reserved Ground Reserved Ground Index Reserved Reserved Drive Select 0 Data Rate Select 0 Motor Enable 0 Reserved Direction In Step Write Data Write Enable Ground Track 0 Reserved Write Protect Read Data Side 1 Select Reserved Disk Change Figure 2-9. Diskette Drive Connector Pin Assignments ThinkPad 560Z System Board 2-13 Memory The ThinkPad computers use the following types of memory: Read-only memory (ROM) Random access memory (RAM) Real-time clock/complementary metal-oxide semiconductor RAM (RT/CMOS RAM) ROM Subsystem The ROM subsystem consists of four banks of 128-KB memory. ROM is active when power is turned on and is assigned to the top of the first and last 1MB of address space (X'000F0000'­X'000FFFFF' and X'FFFF0000'­X'FFFFFFFF'). After POST checks that system memory is operating correctly, the ROM code is copied to RAM at the same address space, and ROM is disabled. RAM Subsystem The RAM subsystem on the system board starts at address X'00000000' of the address space. The RAM subsystem for the ThinkPad 560Z is 64 bits wide. The 32-MB or 64-MB base memory is on the system board. One 144-pin 8-byte dual inline memory module (DIMM) connector is provided on the system board. This connector accepts a 16-MB, 32-MB, or 64-MB EDO type DIMM. The memory capacity can be increased up to 96 MB or 128 MB when a DIMM is used (see "System Board Memory Connector for DIMM" on page 2-15). The total amount of usable memory is less than the amount of memory installed because of ROM-to-RAM remapping and power management. 2-14 ThinkPad 560Z System Board System Memory Map Memory is mapped by the memory controller registers. Figure 2-10 shows the memory map for a correctly functioning system. Memory can be mapped differently if POST detects an error in system board memory or RT/CMOS RAM. In the figure, the variable x represents the number of 1MB blocks of system board memory starting at or above the X'100000' boundary. Hex Address Range 00000000 to 0009FFFF 000A0000 to 000BFFFF 000C0000 to 000C9FFF 000CA000 to 000EFFFF 000F0000 to 000FFFFF 00100000 to (00100000 + x MB) FFFF0000 to FFFFFFFF Function 640-KB system board RAM Video RAM System board video BIOS ROM mapped to RAM Channel ROM 64-KB system board ROM mapped to RAM x-MB system board RAM 64-KB system board ROM (same as X'000F0000' to X'000FFFFF') Figure 2-10. System Memory Map System Board Memory Connector for DIMM The system board of ThinkPad 560Z has one DIMM connector that directly accepts one 144-pin DIMM of one of the following three different capacities: 16-MB, 32-MB, or 64-MB. Figure 2-11 on page 2-16 shows the pin assignments for the DIMM connector. ThinkPad 560Z System Board 2-15 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Signal Ground Ground MD15 MD48 MD14 MD49 MD13 MD50 MD12 MD51 +3.3V dc +3.3V dc MD11 MD52 MD10 MD53 MD9 MD54 MD8 MD55 Ground Ground -CAS1 -CAS6 -CAS5 -CAS2 +3.3V dc +3.3V dc MA0 MA3 MA1 MA4 MA2 MA5 Ground Ground MD47 MD16 MD46 MD17 MD45 MD18 MD44 MD19 +3.3V dc +3.3V dc MD43 MD20 Pin 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 Signal MD42 MD21 MD41 MD22 MD40 MD23 Ground Ground Ground Ground Ground Ground Not connected Not connected +3.3V dc +3.3V dc Not connected Not connected -WE Not connected -RAS2 Not connected -RAS3 Not connected Ground Not connected Ground Ground Ground Ground Ground Ground +3.3V dc +3.3V dc MD31 MD32 MD30 MD33 MD29 MD34 MD28 MD35 Ground Ground MD27 MD36 MD26 MD37