Specifications

iii
Contents
Figures and Tables v
Preface About This Note
vii
Conventions Used In This Book vii
Other Reference Material viii
For More Information ix
Chapter 1
Introduction to the PowerBook Duo 270c Computer
1
PowerBook Duo 270c Computer Features 2
Chapter 2
Hardware Modifications
5
Active-Matrix TFT Color Display Features 6
Changes on Main Logic Board 7
Integrated Floating-Point Unit 8
Color Control Chip (CSC) 8
DRAM Configuration 9
240 MB Hard Disk Drive 9
Environmental Specifications 9
Housing Requirements 10
Hard Disk Interface 12
Interface Requirements 13
SCSI Connectors 13
Terminator 15
Power Requirements 16
Inverter/Speaker Board 16
Clamshell Housing 17
Chapter 3
Software Modifications
19
System ROM 20
Video Support 20
8-Bit Color 21
16-Bit Color 22
Support for Internal FPU 22
Support for Extended DRAM 22
Extended Power Management Capabilities 22