v

Figures and Tables

Chapter 1

Introduction to the PowerBook Duo 250 Computer

1

Figure 1-1

Simplified block diagram of the PowerBook Duo 250
computer system 3

Chapter 2

Hardware Modifications

5

Figure 2-1

Hard disk drive housing 9

Figure 2-2

Bracket for the hard disk drive 10

Figure 2-3

200 MB hard drive SCSI connector 11

Table 2-1

Active-matrix display features 6

Table 2-2

Environmental specifications for 200 MB hard disk drive 8

Table 2-3

Hard disk SCSI connector signal assignments: SCSI
and power 12

Table 2-4

Hard disk SCSI connector signal assignments: SCSI ID 13

Table 2-5

SCSI ID encoding 13

Table 2-6

Power requirements for the 200 MB hard disk drive 14

Chapter 3

Software Modifications

15

Figure 3-1

PowerBook Setup panel 17

Figure 3-2

PowerBook Control Panel 18