Developer Note PowerBook Duo 250 Developer Press © Apple Computer, Inc.
Apple Computer, Inc. © 2000, Apple Computer, Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, mechanical, electronic, photocopying, recording, or otherwise, without prior written permission of Apple Computer, Inc. Printed in the United States of America. No licenses, express or implied, are granted with respect to any of the technology described in this book.
Contents Figures and Tables Preface About This Note v vii Conventions Used in This Note Other Reference Material viii For More Information ix Chapter 1 vii Introduction to the PowerBook Duo 250 Computer PowerBook Duo 250 Computer Features Chapter 2 Hardware Modifications 1 2 5 Active-Matrix Display Features 6 Inverter/Speaker Board 7 200 MB Hard Disk Drive 7 Environmental Specifications 8 Housing Requirements 8 Hard Disk Interface 11 Interface Requirements 11 SCSI Connectors 11 Terminator 13 Po
Figures and Tables Chapter 1 Introduction to the PowerBook Duo 250 Computer Figure 1-1 Chapter 2 Simplified block diagram of the PowerBook Duo 250 computer system 3 Hardware Modifications 5 Figure 2-1 Figure 2-2 Figure 2-3 Hard disk drive housing 9 Bracket for the hard disk drive 10 200 MB hard drive SCSI connector Table 2-1 Table 2-2 Table 2-3 Active-matrix display features 6 Environmental specifications for 200 MB hard disk drive 8 Hard disk SCSI connector signal assignments: SCSI and power 12 H
P R E F A C E About This Note This note is a supplement to the Macintosh Developer Notes, Number 2, Macintosh Duo System, APDA publication number R0457LL/A. It describes the design features of the PowerBook Duo 250 computer, which is basically a PowerBook Duo computer with an active-matrix display and expanded hard disk capabilities. This note provides the hardware or software developer with the additional information needed to design hardware and software elements for the PowerBook Duo 250 computer.
P R E F A C E The following abbreviations are used in the book: AM active matrix DRAM dynamic random access memory FSTN film super twist nematic I/O input/output K 1024 LCD liquid crystal display mA milliampere MB megabyte Mbit megabit MHz megaherz mm millimeter ms millisecond µs microsecond ns nanosecond RAM random-access memory RMS root mean square SCC serial communication controller SCSI small computer system interface VRAM video RAM V volts When unusual abbreviat
P R E F A C E For More Information 0 APDA is Apple’s worldwide source for over three hundred development tools, technical resources, training products, and information for anyone interested in developing applications on Apple platforms. Customers receive the quarterly APDA Tools Catalog featuring all current versions of Apple development tools and the most popular third-party development tools.
C H A P T E R Figure 1-0 Listing 1-0 Table 1-0 1 Introduction to the PowerBook Duo 250 Computer 1
C H A P T E R 1 Introduction to the PowerBook Duo 250 Computer The Macintosh PowerBook Duo 250 computer is a member of the PowerBook Duo family of computers. It has all the basic features of the PowerBook Duo computer but also has certain new features which are described in this note.
C H A P T E R 1 Introduction to the PowerBook Duo 250 Computer ■ sound: enhanced sound chip supports 8-bit monaural sound input and output ■ integral microphone and speakers ■ modem: internal modem/fax card ■ keyboard: integral full-function keyboard with trackball ■ I/O: one 152-pin connector for expansion devices, one mini-DIN 8-pin serial port, one modem port, and a power connector ■ NiCad battery: three-hour removable and rechargeable battery Figure 1-1 shows a simplified block diagram of
C H A P T E R Figure 2-0 Listing 2-0 Table 2-0 2 Hardware Modifications 2
C H A P T E R 2 Hardware Modifications This chapter describes hardware features of the PowerBook Duo 250 computer that make it different from the Macintosh PowerBook Duo computer. These features include ■ the active-matrix display ■ the inverter/speaker board ■ the 200 MB hard disk drive Active-Matrix Display Features 2 The PowerBook Duo 250 display is an active-matrix liquid crystal display.
C H A P T E R 2 Hardware Modifications Inverter/Speaker Board ▲ 2 W AR N I N G You should not open or modify any of the circuitry associated with the inverter/speaker board. The PowerBook Duo 250 active-matrix display is assembled into the clamshell housing in a clean room environment. Opening up the equipment in any other environment could cause damage to the unit. The high-voltage inverter/speaker board may pose a risk if you are handling the board.
C H A P T E R 2 Hardware Modifications Environmental Specifications 2 Table 2-2 provides a summary of environmental specifications for the 200 MB hard disk drive.
C H A P T E R 2 Hardware Modifications Figure 2-1 Hard disk drive housing Bottom view (PCB side) 1.375" ± .015" (34.93 ± 0.38mm) 4.000" (101.60mm) maximum 1.500" (38.10mm) End view 8 Pin J2 Pin 1 Vacant row in 50 pin connector Pin 1 2.759" (70.01mm) PCB connector 40 Pin J1 SCSI PCB controller 2.430" (61.72) Position 17 (key) CL 2 1 0.387" ± 0.012" (9.83 ± 0.30mm) Connector position Bottom mounting holes M 3.0 (4x) 0.079" (2.00mm) Connector envelope Side view 0.750" (19.05mm) maximum 0.
C H A P T E R 2 Hardware Modifications Figure 2-2 Bracket for the hard disk drive 2.874" (73.00mm) 0.188" (4.795±0.125mm) 1 0 0.125" (3.200mm) 2 CL 2x 0.079" (2.00mm) 0.299" (8.60) (7.60mm) 0.125" (3.20mm) (1.60mm) 0.082" (2.10mm) 4x R 0.039" (1.00mm) 2x R full 0.165" (4.20mm) 3x 0.137" (3.50mm) 3x 0.275" (7.00mm) 0.137" (3.50mm) 3x 0 0.118" (3.00mm) 1.299" (33.00mm) 6x R 0.059" (1.50mm) 2.598" (66.00mm) Key 1 This surface to be free of burrs and sharp edges.
C H A P T E R 2 Hardware Modifications Hard Disk Interface 2 This section describes the interface requirements for the 200 MB hard disk drive. It provides specifications and signal assignments for the SCSI connector. Note The interface requirements for the 120 MB hard disk drive are described in Chapter 3 of the Macintosh Developer Notes, Number 2, Macintosh Duo System. ◆ Interface Requirements 2 The interface to the hard disk is an ANSC X3T9.2 SCSI interface.
C H A P T E R 2 Hardware Modifications Table 2-3 lists and describes the interface signals for the 40-pin segment of the connector.
C H A P T E R 2 Hardware Modifications Table 2-4 lists and describes the interface signals for the 8-pin segment of the connector. Table 2-4 Hard disk SCSI connector signal assignments: SCSI ID Pin Signal name Description 1, 2, 3, 4, 8 Unused These pins are not used and are not connected electrically to the CPU 5 /ID1 SCSI ID 1 6 /ID2 SCSI ID 2 7 /ID4 SCSI ID 4 The internal hard disk is assigned a SCSI ID number (0–7).
C H A P T E R 2 Hardware Modifications Power Requirements 2 Power drawn for the 200 MB hard disk must be less than or equal to values shown in Table 2-6 for each mode. All measurements are under nominal environmental and voltage conditions. The limits include 1000-ohm pull-up resistors on all signal lines. Table 2-6 Power requirements for the 200 MB hard disk drive Current (amps) Power (watts) Mode Mean Maximum Mean Maximum Startup (1) Not applicable 1.30 Not applicable 6.
C H A P T E R Figure 3-0 Listing 3-0 Table 3-0 3 Software Modifications 3
C H A P T E R 3 Software Modifications This chapter describes the modifications made to the control panels to support the PowerBook Duo 250 computer. PowerBook Duo 250 Control Panels 3 The functions controlled by the PowerBook Duo control panel have been split between two panels: PowerBook Duo Setup, and PowerBook. Having two panels makes it easier to control functions currently available with the PowerBook Duo 250 computer, and leaves room for growth.
C H A P T E R 3 Software Modifications Figure 3-1 PowerBook Setup panel If you have a third-party modem installed, the control titles will be Internal Modem/ External Modem, and they will behave accordingly. They are the same as those used in PowerBook 7.1. IMPORTANT If you select Compatible, port A (Printer/Modem, Modem) is not available for serial connections. AppleTalk is still available. ▲ PowerBook Control Panel 3 PowerBook control panel is a completely new control panel.
C H A P T E R 3 Software Modifications performance or provide better conservation. The controls revert to the single slider if you click the Easy control. The PowerBook Control Panel remembers the state in which the controls were left when last used. Figure 3-2 PowerBook Control Panel Power Conservation 3 There are two modes of battery conservation. One is used when the PowerBook Duo 250 computer is plugged into AC main power, and the other is used when the computer is running on its battery.
Index A F, G active-matrix display 2, 6 APDA addresses ix fax card 3 features active-matrix display 6 PowerBook Duo 250 computer 2 B battery 3 battery conservation 17 custom controls 17 easy controls 17 battery conservation panel 18 block diagram 3 board, inverter/speaker 7 bracket, hard disk drive 10 C combo chip 3 Communications ToolBox (CTB) 16 control panels 16 conventions used in note vii custom controls 17 custom mode 18 D dimensions, hard disk drive 9 display 2 DRAM 2 DRAM connector 2 H hard d
I N D E X sound 3 speakers 3 system block diagram 3 system controller 2 system control panel 16 modification 16 T, U terminator, hard disk drive 13 third-party modems 17 V, W, X, Y, Z video components 2 20
