Technical information

CHAPTER 1
Introduction
4
How the DOS Compatibility Card Works
Notice that the DOS Compatibility Card has greater sound and networking capabilities
than a midrange PC. In addition, the card provides external SCSI expansion through the
host computer (for hard drives and removable-media devices only).
How the DOS Compatibility Card Works 1
The DOS Compatibility Card is designed to operate in the PDS slot of the Power
Macintosh 6100. The card assembly consists of shield bracket, a processor card, and a
PDS adapter card that is plugged into the PDS slot of the Power Macintosh 6100.
Figure 1-2 shows an edge view of the DOS Compatibility Card assembly installed
in a Power Macintosh 6100 computer. For installation instructions, refer to the DOS
Compatibility Card User’s Manual.
Figure 1-2 The DOS Compatibility Card installed
Outline of Operation 1
Figure 1-3 shows a simplified block diagram of the DOS Compatibility Card installed in
a Power Macintosh 6100 computer.
Floppy disk 3.5-inch 3.5-inch and 5.25-inch
AT expansion None 3 slots
External SCSI Yes No
Table 1-1 Comparison of the DOS Compatibility Card and a midrange PC (continued)
Feature DOS Compatibility Card Midrange PC
Processor card
(end view)

PDS adapter card
(end view)
Power Macintosh 6100
main logic board
Shield bracket
(outline)