Developer Note Macintosh LC 520 Computer Developer Note 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. The Apple logo is a registered trademark of Apple Computer, Inc.
Contents Figures and Tables Preface vii About This Note ix Contents of This Note ix Supplemental Reference Documents Conventions and Abbreviations xi Typographical Conventions xi Standard Abbreviations xi Chapter 1 Introduction x 1 Summary of Features 2 Comparison With the Macintosh Color Classic Comparison With the Macintosh LC III 3 Integrated Design 3 Front View 3 Back View 4 Access to the Logic Board 4 Built-in Color Display 4 Screen Control Pushbuttons 5 Video RAM 6 Power On and Off 6 Power S
Chapter 2 Architecture 19 Block Diagram 20 MC68030 Microprocessor 20 Ardbeg Custom IC 20 Ariel Custom IC 20 Combo Custom IC 22 Cuda ADB Controller 22 Sound Circuits 22 Sound Modes 22 Sample Rates 23 Address Map 23 RAM Addresses 23 Video RAM 25 Video Display Timing 25 Chapter 3 Expansion 29 Expansion Slot 30 Pin Assignments 30 Descriptions of the Signals 32 The PDS Expansion Card 34 Expansion Card Connectors 35 Address Space for the Expansion Card Power for the Expansion Card 36 Chapter 4 Software
The Screen Driver 42 Screen Driver Calls 42 Open 43 Control 43 Status 44 Chapter 5 Internal Storage Devices 45 Storage Device Slide-In Bays 46 Front Drive Bezel 47 Connector Adapters 48 Internal CD-ROM Drive 48 Dimensions of the CD-ROM Drive 48 Mounting Method for the CD-ROM Drive Power for the CD-ROM Drive 50 Internal CD-ROM Integration 51 Appendix AppleCD 300i Specifications General Information Specifications 53 Index Foldouts 50 53 53 55 59 v
Figures and Tables Chapter 1 Chapter 2 Chapter 3 Chapter 4 Introduction 1 Figure 1-1 Figure 1-2 Figure 1-3 Figure 1-4 Figure 1-5 Figure 1-6 Front view of the Macintosh LC 520 computer Back view of the Macintosh LC 520 computer Screen control panel 7 RAM configurations 8 RAM expansion SIMM 9 Serial port sockets 14 Table 1-1 Table 1-2 Table 1-3 Table 1-4 Table 1-5 Table 1-6 VRAM size and number of colors 6 Pin assignments for the internal and external SCSI connectors 11 Pin assignments for the inter
Chapter 5 Appendix Internal Storage Devices Figure 5-1 Figure 5-2 Figure 5-3 Figure 5-4 Figure 5-5 Figure 5-6 Figure 5-7 Installation of the internal CD-ROM drive 46 Front drive bezel 47 Connector locations on the CD-ROM drive 48 Connector locations on the hard disk drive 49 Dimensions of the CD-ROM drive 49 The AppleCD 300i mounted on the sled 50 Pins on the CD-ROM audio connector 51 Table 5-1 Power available for the AppleCD 300i CD-ROM drive AppleCD 300i Specifications Table A-1 viii 45 53 Apple
P R E F A C E About This Note This developer note provides information about the Macintosh LC 520 computer, an integrated model with a built-in 14-inch color display. The Macintosh LC 520 has about the same performance as the Macintosh LC III. Note While every attempt has been made to verify the accuracy of the information presented here, it is subject to change without notice.
P R E F A C E Supplemental Reference Documents 0 To supplement the information in this developer note, developers should have copies of the appropriate Apple reference books, including Inside Macintosh, Volumes IV, V, and VI; Guide to the Macintosh Family Hardware, second edition; and Designing Cards and Drivers for the Macintosh Family, third edition. These books are available in technical bookstores and through APDA.
P R E F A C E To order products or to request a complimentary copy of the APDA Tools Catalog, contact APDA Apple Computer, Inc. P.O. Box 319 Buffalo, NY 14207-0319 Telephone 800-282-2732 (United States) 800-637-0029 (Canada) 716-871-6555 (International) Fax 716-871-6511 AppleLink APDA America Online APDA CompuServe 76666,2405 Internet APDA@applelink.apple.
P R E F A C E mA milliamperes µs microseconds µA microamperes ns nanoseconds MB megabytes sec.
C H A P T E R Figure 1-0 Listing 1-0 Table 1-0 1 Introduction 1
C H A P T E R 1 Introduction The Macintosh LC 520 computer is an integrated Macintosh computer with a built-in color display. It is a larger version of the Macintosh Color Classic® with many of the performance features of the Macintosh LC III. This chapter outlines the main features of the Macintosh LC 520 computer and describes its appearance and external features.
C H A P T E R 1 Introduction ■ integrated case larger than that of the Macintosh Color Classic ■ RAM expandable to 36 MB instead of 10 MB ■ two internal speakers for stereo sound output ■ two sound output jacks, one in front, one in back ■ provision for an internal CD-ROM drive ■ extended processor-direct slot (PDS) for hardware expansion Comparison With the Macintosh LC III 1 The Macintosh LC 520 computer combines the integrated design of the Macintosh Color Classic with many of the functi
C H A P T E R 1 Introduction Figure 1-1 Front view of the Macintosh LC 520 computer Built-in microphone Color display CD-ROM drive (optional) Floppy disk drive Stereo speakers Headphone jack Screen control buttons Power-on light Sound control buttons Back View 1 Figure 1-2 shows the back of the Macintosh LC 520 computer. The master power switch is located just beneath the fan grille. The external connectors are located in a row across the lower part of the back.
C H A P T E R 1 Introduction Figure 1-2 Back view of the Macintosh LC 520 computer Power switch Power connector ADB ports Printer port Modem port SCSI port Sound input jack Sound output jack Expansion card access The display screen in the Macintosh LC 520 computer displays the same amount of information as the Macintosh 14-inch color display: 640 by 480 pixels.
C H A P T E R 1 Introduction Video RAM 1 The Macintosh LC 520 computer comes with 512 KB of VRAM and a socket for a SIMM with an additional 256 KB of VRAM. The VRAM expansion SIMM is the same 68-pin SIMM used with the Macintosh LC III and Macintosh Quadra computers. It requires VRAM devices with access times of 80 ns or less. The basic 512 KB VRAM provides up to 8 bits per pixel; the screen displays up to 256 colors, software-selectable from a range of 16 million.
C H A P T E R 1 Introduction Power Saver 1 The power saver is an optional feature that automatically turns off the display whenever the Macintosh LC 520 computer is turned on but is not used for more than a set period of time. The user selects the power saver and sets the length of time before the screen turns off by adjusting the slider in the Screen control panel, shown in Figure 1-3.
C H A P T E R 1 Introduction RAM Expansion 1 The Macintosh LC 520 computer comes with 4 MB of RAM built in. By installing a SIMM, the user can expand the RAM up to a maximum of 36 MB. RAM Configurations 1 Figure 1-4 shows the RAM configurations for different amounts of RAM. For more information, see the section “RAM Addresses” on page 23.
C H A P T E R 1 Introduction Figure 1-5 RAM expansion SIMM -BR 1.57 ± 0.1 [.062 ± .004] 32.0 [1.26] MAX 10.16 ± 0.20 [.400 ± .008] 6.35 ± 0.20 [.250 ± .008] 3.38 [.133] -A- (6.35) [.250] 1 2.03 ± 0.20 [.080 ± .008] 101.19 ± 0.20 [3.98 ± .008] SEE DETAIL A 35 X 1.27 [.050] = 44.45 ± 0.20 [1.75 ± .008] 6.35 ± 0.05 [.250 ± .002] 107.95 ± 0.20 [4.25 ± .008] 0.10 [.004] M A B R 1.57 ± 0.12 [.062 ± .005] 35 X 1.27 [.050] = 44.45 ± 0.20 [1.75 ± .008] 2X Ø3.18 ± 0.1 [.125 ± .004] 2.03 [.080] MIN 0.
C H A P T E R 1 Introduction PDS Expansion Slot 1 The Macintosh LC 520 computer has a single internal 114-pin expansion connector that provides direct access to the MC68030 microprocessor from an optional expansion card. The connector can accept a 96-pin expansion card similar to the PDS card for the Macintosh Color Classic. Like the PDS connector on the Macintosh LC III, it can also accept an expansion card that uses all 114 pins to make better use of the power of the MC68030 microprocessor.
C H A P T E R 1 Introduction Table 1-2 Pin assignments for the internal and external SCSI connectors Internal (50-pin) External (25-pin) Signal name 2 8 /DB0 4 21 /DB1 6 22 /DB2 8 10 /DB3 10 23 /DB4 12 11 /DB5 14 12 /DB6 16 13 /DB7 18 20 /DBP 20, 22, 24, 28, 30, and 34 – n.c.
C H A P T E R 1 Introduction Comparison of SCSI Arrangements 1 There are now three arrangements of SCSI cabling and termination used in Macintosh computers. The first arrangement is used on Macintosh computers that support only one internal SCSI device (examples include the Macintosh LC II and the Macintosh Quadra 700). Terminators built into the internal SCSI device terminate the internal end of the SCSI bus.
C H A P T E R 1 Introduction Table 1-3 Pin assignments for the internal floppy disk connector Pin number Signal name Signal description 1 GND Ground 2 PH0 Phase 0: state control line 3 GND Ground 4 PH1 Phase 1: state control line 5 GND Ground 6 PH2 Phase 2: state control line 7 GND Ground 8 PH3 Phase 3: register write strobe 9 n.c.
C H A P T E R 1 Introduction Figure 1-6 8 Serial port sockets 7 5 6 4 2 8 3 5 1 Printer 7 6 9 4 2 1 3 Modem Table 1-4 Serial port signals Pin number Signal description 1 Handshake output 2 Handshake input 3 Transmit data – 4 Ground 5 Receive data – 6 Transmit data + 7 General-purpose input 8 Receive data + 9 +5 volts (modem port only) The extra pin on the modem connector provides +5V power from the ADB power supply.
C H A P T E R 1 Introduction ADB Ports 1 The ADB ports are functionally the same as those on other Macintosh computers. The Apple Desktop Bus is a single-master, multiple-slave serial communications bus that uses an asynchronous protocol and connects keyboards, graphics tablets, mouse devices, and other devices to the Macintosh LC 520 computer. The custom ADB microcontroller drives the bus and reads status from the selected external device.
C H A P T E R 1 Introduction Microphone 1 The Macintosh LC 520 computer has a built-in microphone at the front of the case. The microphone is connected internally to the main logic board. The user selects the built-in microphone as the sound source by using the Sound control panel. For more information, see the section “Sound Control Panel” beginning on page 41. Sound Input Jack 1 There is a sound input jack on the back of the computer for connecting an external microphone or other sound source.
C H A P T E R 1 Introduction Note The user must hold down a key combination for at least 1 second to allow the ADB microcontroller enough time to respond to the NMI or hard-reset signal. ◆ Table 1-6 Reset and NMI key combinations Key combination Function Power (p) Power on and off Command-Power (x-p) NMI (always active) Control-Command-Power (Control-x-p) Reset Note The NMI in the Macintosh LC 520 computer can always be activated from the keyboard.
C H A P T E R Figure 2-0 Listing 2-0 Table 2-0 2 Architecture 2
C H A P T E R 2 Architecture This chapter describes the architecture of the Macintosh LC 520 computer. It describes the main components on the logic board and explains the features that are different from those of earlier Macintosh computers. Block Diagram 2 The architecture of the Macintosh LC 520 computer is based on the design of the Macintosh LC III. The Macintosh LC 520 uses several new custom ICs, as shown in the block diagram in Figure 2-1.
C H A P T E R 2 Architecture Figure 2-1 Block diagram Processor direct slot A21–2 ROM ROM SIMM Bidirectional bus transceivers CPU D31–0 MC68030 A31–0 D31–0 A31–0 D31–0 D31–0 FPU socket MC68882 RA10–0 RAM RAM SIMM Bidirectional bus transceivers 14-inch video monitor VRAM VRAM SIMM D31–0 D15–0 Ariel A31, A23–0 Ardbeg Custom system controller IC Connector for internal floppy disk drive Monitor circuitry CLUT/DAC (includes SWIM II floppy disk controller) Speaker amplifier Internal
C H A P T E R 2 Architecture Combo Custom IC 2 In the Macintosh LC 520 computer, the functions of two interface ICs, the SCC (85C30) and the SCSI (53C80), are combined into one device, the Combo IC (85C80). The SCSI port on the Macintosh LC 520 is the same as that on the Macintosh LC III. The SCC (serial) ports are also like their counterparts except that they include the GPi signal (on pin 7). The GPi signal can be used for input handshaking or for a receive clock input to support a synchronous modem.
C H A P T E R 2 Architecture One way of using sound record with playthrough is in the recording of sounds from a CD or CD-ROM. IMPORTANT As in the Macintosh LC, the sound mode is selected by means of a call to the Sound Manager. To prevent feedback that might be audible, an application should not let the user select select playthrough mode when either microphone has been selected as the sound input source. For more information, see the section “Sound Control Panel” beginning on page 41.
C H A P T E R 2 Architecture Figure 2-2 24-bit and 32-bit address maps Expansion slot $FFFF FFFF $FE00 0000 $F000 0000 NuBus super slot space $7000 0000 $60FF FFFF Video RAM $50FF FFFF $FF FFFF $F0 0000 $E0 0000 $6000 0000 I/O I/O Expansion slot $4020 0000 ROM $C0 0000 $5000 0000 $4000 0000 Video RAM $B0 0000 $90 0000 ROM $80 0000 RAM (up to 8 MB) $023F FFFF RAM $00 0000 24-bit address space 24 Address Map 32-bit address space $0000 0000
C H A P T E R 2 Architecture Video RAM 2 The Macintosh LC 520 computer uses separate video RAM (VRAM) to store the screen buffer. The video RAM occupies a dedicated address space, as shown in Figure 2-2. The computer comes with 512 KB of VRAM soldered to the main logic board. A 68-pin SIMM socket accepts an additional 256 KB for a total of 768 KB of VRAM. The VRAM SIMM is the same size and has the same pin assignments as the VRAM expansion SIMM for the Macintosh Display Card 8•24.
C H A P T E R 2 Architecture Figure 2-3 Standard video timing Horizontal timing White Video Video Black 224 dots 640 dots HBLANK 864 dots /HSYNC Back porch = 96 dots Horizontal sync pulse = 64 dots Front porch = 64 dots ;;;;;; ;;;;;; ;;;;;; Vertical timing Video ;;;;;;;;;;;; ;;;;;;;;;;;; ;;;;;;;;;;;; Lines of video 45 lines 480 lines VBLANK 525 lines /VSYNC Back porch = 39 lines Vertical sync = 3 lines Front porch = 3 lines 26 Video Display Timing ;;; ;;; ;;; White Black
C H A P T E R 2 Architecture When the Apple IIe Card for the Macintosh is installed in the expansion slot, the Macintosh LC 520 computer generates a 560-by-384-pixel video display. Table 2-2 lists the video parameters for the Apple IIe display and Figure 2-4 on page 28 shows the timing and synchronizing signals. Table 2-2 Video parameters for the Apple IIe display Parameter Value Dot clock 17.234 MHz Dot time 58.02 ns Line rate 24.48 kHz Line time 40.85 µs Frame rate 60.
C H A P T E R 2 Architecture Figure 2-4 Video timing for the Apple IIe card Horizontal timing White Video Video Black 144 dots 560 dots HBLANK 704 dots /HSYNC Back porch = 80 dots Horizontal sync pulse = 32 dots Front porch = 32 dots Vertical timing ;;;;; ;;;;; Video ;;;;;;;;;;;; ;;;;;;;;;;;; Lines of Video 23 lines 384 lines VBLANK 407 lines /VSYNC Back porch = 19 lines Vertical sync = 3 lines Front porch = 1 line 28 Video Display Timing ;;; ;;; White Black
C H A P T E R Figure 3-0 Listing 3-0 Table 3-0 3 Expansion 3
C H A P T E R 3 Expansion The expansion feature of the Macintosh LC 520 computer is a processor-direct slot that connects directly to the MC68030 microprocessor. This chapter describes the expansion slot and gives the specifications for an expansion card.
C H A P T E R 3 Expansion Table 3-1 Signals on the 96-pin section of the expansion connector Pin number Row A Row B Row C 1 SNDOUT Analog GND /FPU.SEL 2 /SLOTIRQ /R/W /DS 3 /PDS.AS +5V /BERR 4 /PDS.DSACK1 +5V /PDS.DSACK0 5 /HALT SIZ1 SIZ0 6 FC2 GND FC1 7 FC0 CLK16M /RESET 8 RMC GND /SLOT.
C H A P T E R 3 Expansion Table 3-2 Signals on the 18-pin section of the expansion connector Pin number Row A Row B Row C 35 A28 /CPU.BG CPU.CLK 36 A29 CPU.TYPE A30 37 /CIOUT /CPU.AS /STERM 38 /CBACK /CPU.DISABLE /CBREQ 39 /SLOTIRQ.D /DSACK0 /SLOTIRQ.C 40 CACHE GND /DSACK1 All the signals on the expansion connector are capable of driving at least one TTL load (1.6 mA sink, 400 µA source).
C H A P T E R 3 Expansion Table 3-3 Processor-direct expansion connector signal descriptions (continued) Signal name Signal description /CPU.BG Processor bus grant; signal from the external device can become bus master following completion of current processor bus cycle. D0–D31 Data lines. /DS Data strobe. During read operation, /DS indicates that external device should place data on data bus; during write operation, /DS indicates that the main processor has placed valid data on the data bus.
C H A P T E R 3 Expansion Table 3-4 Expansion slot signals not connected to the MC68030 (continued) Signal name Signal description /FPU.SEL Select signal for an optional MC68881 or MC68882 FPU on the card. /PDS.AS Address strobe synchronized to 16 MHz regardless of the actual processor speed; used to indicate the occurrence of an active bus transaction. /PDS.AS is asserted only when a valid slot address is being generated by the bus master or by an access to the FPU.
C H A P T E R 3 Expansion restrictions for the expansion card. Foldout 3 shows how the card is installed on the main logic board. Expansion Card Connectors 3 The custom 114-pin PDS connector on the computer’s main logic board accepts either a 96-pin or 120-pin standard Euro-DIN connector. You can order connectors meeting Apple specifications from Amp Incorporated, Harrisburg, PA 17105 or from Augat Incorporated, Interconnect Products Division, P. O. Box 779, Attleboro, MA 02703.
C H A P T E R 3 Expansion Power for the Expansion Card 3 The PDS card uses power supplied through the 96-pin connector. The maximum current available at each supply voltage is shown in Table 3-5. The card must not dissipate more than 5 W total; for example, if the card uses the maximum current at –5 V and +12 V, it must not use more than 500 mA from the +5 V supply. Table 3-5 ▲ Power available for the expansion card Voltage Current +5 1.
C H A P T E R Figure 4-0 Listing 4-0 Table 4-0 Software 4 4
C H A P T E R 4 Software The first part of this chapter describes the software in the Macintosh LC 520 computer’s ROM. The second part describes the system software that supports the new features of the Macintosh LC 520 computer. ROM Software 4 The ROM in the Macintosh LC 520 computer is based on the ROM for the Macintosh LC III with the necessary changes to support machine-specific hardware.
C H A P T E R 4 Software One-Second Interrupt 4 As on the Macintosh Color Classic and Macintosh LC III computers, the one-second interrupt on the Macintosh LC 520 computer is provided by the ADB microcontroller, which sends the one-second interrupt to the main processor as a pseudodevice transaction.
C H A P T E R 4 Software System Software 4 The Macintosh LC 520 computer requires System 7.1 or a later version of system software. The disk labeled “Install Me First” includes a system enabler file that contains the resources the system needs to start up and initialize the Macintosh LC 520 computer. The system disk includes an Installer application to install the control panels for the new features of the machine. System Enabler 4 Starting with the international release of System 7.
C H A P T E R 4 Software Sound Control Panel 4 The Sound control panel on the Macintosh LC 520 computer is able to update its slider to reflect changes in the sound level caused by the user pressing one of the sound pushbuttons on the front of the case. The control panel also has a Mute checkbox to turn off the sound. When the user adjusts the sound level, either with the control panel or with the pushbuttons, the software also turns off the Mute checkbox. Figure 4-1 shows the Sound control panel.
C H A P T E R 4 Software Screen Control Panel 4 The Screen control panel has sliders for adjusting brightness and contrast. The user can adjust either slider by dragging with the mouse and can adjust the contrast using the arrow keys or the number keys. Figure 4-3 shows the Screen control panel.
C H A P T E R 4 Software Because the Screen driver is opened at startup and is never closed, and because there is nothing to read or write, the following calls are not supported: ■ CloseDriver ■ FSRead ■ FSWrite ■ KillIO The following are calls supported by the Screen Driver. Open 4 PBOpen (paramBlock: ParmBlkPtr; async: BOOLEAN) : OSErr_Open Parameter block → ← → ← → ioCompletion ioResult ioNamePtr ioRefNum ioPermssn Nil. noErr (zero). Pointer to the name .BCScreen.
C H A P T E R 4 Software csCode values: Name Value Description CtrlScrnBright $4301 Set screen brightness PWM value to csParam[0] (value = 0-255). CtrlSaveBright $4302 Store current brightness to PRAM. CtrlScrnCont $4307 Set screen contrast PWM value to csParam[0] (value = 0-255). CtrlSaveCont $4308 Store current contrast to PRAM. CtrlScreenOff $4309 Turn off power to internal monitor. CtrlScreenOn $4310 Turn on power to internal monitor.
C H A P T E R Figure 5-0 Listing 5-0 Table 5-0 5 Internal Storage Devices 5
C H A P T E R 5 Internal Storage Devices This chapter describes the internal storage devices in the Macintosh LC 520 computer. The computer accommodates one floppy disk drive, one half-high hard disk, and an optional AppleCD 300i CD-ROM drive. IMPORTANT This chapter describes the internal storage devices in the Macintosh LC 520 computer, but does not include design guides for developers.
C H A P T E R 5 Internal Storage Devices Front Drive Bezel 5 The front drive bezel has openings for access to removable media. On computers with no internal CD-ROM drive, the bezel has only the opening for floppy disks. Figure 5-2 shows the two views of the front drive bezel for the Macintosh LC 520 computer with the AppleCD 300i internal CD-ROM drive. Note To remove the front drive bezel, insert a flat screwdriver into the slot on the bottom of the bezel and twist while sliding the bezel downwards.
C H A P T E R 5 Internal Storage Devices Connector Adapters 5 As Figure 5-1 illustrates, the Macintosh LC 520 computer uses special adapters that allow internal storage devices to slide into place and plug directly into the computer. The connectors on the devices themselves must be located properly so that the connector adapters will fit. Figure 5-3 shows the connector locations on the internal CD-ROM drive. Figure 5-4 shows the connector locations on the internal hard disk drive.
C H A P T E R 5 Internal Storage Devices Figure 5-4 Connector locations on the hard disk drive 4.69 3.42 4.19 C28.96 89.92 Center of 6-32 bottom mounting hole Note: Dimensions are in millimeters Figure 5-5 Dimensions of the CD-ROM drive 41.4 –0°.5 21.84 ±0.3 146.05 –0.5° 139.7 ±0.5 9.91 ±0.3 203.2 –0°.3 79.25 ±0.3 47.5 ±0.3 A 5 148.05 ±0.3 Mounting holes for 4-M3 screws 0.8 ±0.5 CL (0.3) 42.5 ±0.2 (42.5 ±0.
C H A P T E R 5 Internal Storage Devices Mounting Method for the CD-ROM Drive 5 Figure 5-6 shows the AppleCD 300i CD-ROM drive mounted on the sled that secures it in the mounting bay. The sled is included in the AppleCD 300i mounting kit for the Macintosh LC 520 computer. Figure 5-6 The AppleCD 300i mounted on the sled CD drive CD carrier Power for the CD-ROM Drive Table 5-1 shows the power budget for the AppleCD 300i CD-ROM drive in the Macintosh LC 520 computer.
C H A P T E R 5 Internal Storage Devices Note The AppleCD 300i CD-ROM drive connects to the internal SCSI bus. The drive does not have a SCSI terminator, because the internal SCSI bus is terminated in the built-in hard disk. ◆ Internal CD-ROM Integration 5 Apple’s internal CD-ROM drive uses SCSI ID number 3. Audio from the CD-ROM is connected to the computer by a separate connector adapter. Figure 5-7 shows the pin assignments.
A P P E N D I X Figure A-0 Listing A-0 Table A-0 AppleCD 300i Specifications A This Appendix describes the performance and capabilities of the AppleCD 300i drive, the internal CD-ROM drive included in some configurations of the Macintosh LC 520 computer. General Information A The AppleCD 300i supports the world wide standards and specifications for CD-ROM and CD-digital audio discs described in the Sony/Phillips Yellow Book and Red Book.
A P P E N D I X A AppleCD 300i Specifications Table A-1 AppleCD 300i specifications (continued) CD-ROM Modes supported CD-ROM (Mode 1 and Mode 2), CD-ROM XA (Mode 2, Form 1 and Form 2), and CD-I (Mode 2, Form 1 and Form 2) Block lengths supported CD-ROM Mode 1 CD-ROM Mode 2 CD-ROM XA 2048, 1024, and 512 bytes 2340, 2336, 1024, and 512 bytes 2647, 2353, and 2336 bytes Blocks per disc 336,150 (typical) Data capacity 656 MB, Mode 1 748 MB, Mode 2 Address description Minutes, seconds, frames Tran
Index Numerals 24-bit addressing 23 32-bit addressing 23, 38 68HC05 microcontroller 22 A abbreviations xi to xii access to the logic board 4 ADB (Apple Desktop Bus) ports 15 ADB controller 22 address maps 24 address modes 23 AppleCD 300i 48 features 53 Apple IIe card 10 video display for 27 Apple SuperDrive 12 Ardbeg custom IC 20, 22 automatic termination 11 color lookup table (CLUT) 25 Combo IC 22 connector adapters 48 connectors ADB 15 floppy disk 12 for expansion card 35 SCSI 10 serial I/O 13 sound inp
I N D E X P, Q S T, U parameter RAM 22 PDS (processor-direct slot) 10, 34 PDS card 34 addresses 35 card select signal 35 compatibility with Macintosh LC II 30 connector for 35 design guidelines 35 power, maximum 36 signal loading 32 PDS connector signals 32 power, safe shutdown 6 power button 6 power for CD-ROM drive 50 power for PDS card 36 power key 6, 16 power saver 7, 39 power switch 6 location of 4 pushbutton interrupts 39 Pushbutton register 39 pushbuttons interrupts for 39 location of 3 screen co
Figure 6-0 Listing 6-0 Table 6-0 Foldouts 6
062-0487-B Expansion card design gu FOLDOUT 1
062-0487-B Expansion card componen FOLDOUT 2
062-0487-B Expansion card assembl FOLDOUT 3
