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05L1739
S05L-1739-00
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Note Before using this information and the product it supports, be sure to read the general information under Appendix C, “Notices” on page C-1. First Edition (December 1997) 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
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Contents Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Section 1. System Overview . . . . . . . . . . . . . . . . . . . 1-1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 System Board Devices and Features ............... 1-3 System Board I/O Address Map .................. 1-5 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 Pe
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RT/CMOS RAM . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 Miscellaneous System Functions and Ports .......... 2-29 Nonmaskable Interrupt (NMI) ................. 2-29 System Control Port A (Hex 0092) .............. 2-30 System Control Port B (Hex 0061) .............. 2-31 Power-On Password . . . . . . . . . . . . . . . . . . . . . . 2-32 Other Passwords . . . . . . . . . . . . . . . . . . . . . . . . 2-32 Selectable Drive-Startup Sequence .............. 2-33 Hardware Compatibility .
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System Information Service .................. B-12 System Configuration Service ................. B-22 Power Management Service .................. B-29 Event Bit Definition ....................... B-34 Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-53 Function Declaration . . . . . . . . . . . . . . . . . . . . . . B-57 Installation Check . . . . . . . . . . . . . . . . . . . . . . . . B-58 BIOS Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-62 Appendix
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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-
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2-30. System Control Port A (Hex 0092) .......... 2-30 2-31. System Control Port B (Hex 0061, Write) ...... 2-31 2-32. System Control Port B (Hex 0061, Read) ...... 2-31 2-33. Error Codes . . . . . . . . . . . . . . . . . . . . . . . . 2-35 3-1. BIOS Video VGA Modes ................. 3-3 3-2. Video BIOS Extended Modes—Trident 9397 ...... 3-4 3-3. PCMCIA PC Card Slot Pin Assignments ....... 3-12 viii
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Preface This technical reference contains hardware and software interface information specific to the IBM ThinkPad 770 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,” describe
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x Preface
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Section 1. System Overview Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 System Board Devices and Features ............... 1-3 System Board I/O Address Map .................. 1-5 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 Performance Specifications . . . . . . . . . . . . . . . . . . . 1-7 Physical Specifications . . . . . . . . . . . . . . . . . . . . . . 1-8 Electrical Specifications . . . . . . . . . . . . . . . . . . . . .
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Description The IBM ThinkPad 770 computer (hereafter called the ThinkPad computer or the computer) is notebook-size computer that feature the AT bus architecture. Each computer supports one UltraBay II and one internal hard disk drive. The ThinkPad 770 computer also supports an internal CD-ROM drive or an internal DVD drive as an option. Programs can distinguish the foregoing computer model from other ThinkPad models by reading the system ID: Interrupt 15H Function code (AH)=23H and (
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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 Type Features Microprocessor – Intel Pentium processor with the MMX technology 200 or 233 MHz 32 KB on-chip cache External cache – 512 KB (write back) System timers 1 Channel 0: system timer Channel 1: refresh generation Channel 2: tone generator for speaker ROM s
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Device Type Features Interrupt controller 1 15 levels of system interrupts (interrupts are edge-triggered) Keyboard/auxiliary 1 Internal keyboard device controller TrackPoint Auxiliary device connector Password security Diskette drive 2 Supports: controller 3.5-in. diskette (1.44 MB) 3.5-in. diskette (1.2 MB) 3.5-in. diskette (720 KB) Serial controller 2 EIA-232-E interface (16550 compatible) port Programmable as serial port 1, 2, 3, or 4 One 9-pin, D-sub connector Parallel controll
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System Board I/O Address Map Figure 1-3 is the I/O address map. Address (Hex) Device 0000–001F DMA Controller (0–3) 0020, 0021 Interrupt Controller (master) 0022–002F Reserved 0040–0043 System Timer 1 0048–004B Reserved 0060 Keyboard, Auxiliary Device 0061 System Control Port B 0062, 0066 Slave Controller 0064 Keyboard, Auxiliary Device 0070, 0071 RT/CMOS and NMI Mask 0072, 0073 Extended RT and CMOS 0074, 0075, 0076 Reserved 0081–0083, 0087 DMA Page Registers (0–3) 0089–008B, 008F DMA Page R
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Address (Hex) Device 0330–0333 MIDI Port 4 0350–035F ThinkPad Modem 0376, 0377 Secondary IDE Registers 0378–037A Parallel Port 2 037B–037F Reserved 0388–038B Audio Subsystem - FM Synthesizer 0398–0399 Reserved 03B4, 03B5, 03BA Video Subsystem 03BC–03BE Parallel Port 1 03C0–03C5 Video Subsystem 03C6–03C9 Video DAC 03CA, 03CC, 03CE, 03CF, Video Subsystem 03D4, 03D5, 03DA, 03D8–03DA 03E0–03E1 PCMCIA Interface (DCR 2959) 03E8–03EF Serial Port 3 03E8–03EF IR Port 3 03F0–03F5, 03F7 Diskette-Drive
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Specifications Figure 1-4 to Figure 1-7 on page 1-9 list the specifications for the computers. Performance Specifications Clock Counts Device/Cycle (66 MHz) Microprocessor 200 or 233 MHz L1 cache (64bit) read/write hit 1 CPUCLK L2 cache (64bit) (for not all models) 90 ns (60 ns) read hit (back-to-back) 90 ns (60 ns) write hit (back-to-back) Memory (64bit) (see Note) read, page hit 240 ns read, raw miss 285 ns read, page miss 345 ns posted write 90 ns write retire rate from 135 ns wr
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Physical Specifications Size Width: 313.0 mm (12.3 in.) Depth: 240.0 / 254.0 mm (9.45 / 10.00 in.) Height: 56.0 mm (2.20 in.) Weightñ (approximate value) 3.4 kg (7.4 lb) 3.5 kg (7.7 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 altitudeò: 3,048 m (10,000 ft) in unpressu
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Electrical Specifications (56 W) Input voltageñ 100–240 (V ac) Frequency (Hz) 50/60 Inputò (kVA) 0.13 ñ Range is automatically selected; sine wave input is required. ò At maximum configuration. Figure 1-6. Electrical Specifications Acoustical Readings L in bels L in dB in dB WAd pAm pA m Operate Idle Operate Idle Operate Idle 770 4.40 3.90 35.0 30.0 30.0 25.5 770 (with 4.60 4.30 37.5 34.0 31.0 28.0 SelectaDock III) Notes: L Is the declared sound power level for the random sample
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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 CD-ROM drive Auxiliary devices Keyboard LCD panel PCMCIA cards DVD drive Voltages The power supply generates six different dc voltages: VCC5M, VCC3M, VCC12, and VCCSW. Figure 1-8 shows the maximum current for each voltage. Output Voltage (V dc) Current (A) VCC5M +5.0 5.80 VCC3M +3.3 6.00 VCC12 +12.0 0.50 VCCSW +5
