Specifications

CHAPTER 3
I/O Specifications
34
The 12” and 7” PC Compatibility Cards interface with other elements in the system, such
as the main CPU, the monitor, sound devices, and video devices, through a variety of
connectors located on the cards. Figure 3-1 shows the physical locations of the I/O
connectors on the 12” card. Figure 3-2 shows the locations of the connectors on the
7" card.
The way the interface is implemented depends on the CPU in which the card is installed.
This section describes the actual physical connectors on each of the cards. For more
information on the components that make up the I/O system for the two cards, see “I/O
System” beginning on page 26. For more information on CPU-dependent I/O
configurations, see “Audio and Video I/O Support” beginning on page 28.
This chapter describes the following connectors:
■ the PCI connector, which allows you to connect the cards to the host computer’s main
logic board
■ the DB26 connector, which allows you to connect a monitor to the system
■ the DB15 connector, which allows you to connect a mouse, keyboard, PC-compatible
joystick, or a MIDI device
■ the GIMO connector, which allows you to connect a monitor to the system
■ two audio connectors for sound input and sound output
■ a DIMM connector, which allows you to install additional memory
■ an XD connector, which provides you with access to the ISA bus
Figure 3-1 Locations of I/O connectors for the 12” card
168-pin DIMM connector
GIMO
connector
XD connector
Ribbon cable
PCI edge connector
Pentium-
class
processor
Sound out
CD
sound in
Video
connector
(DB26)
Mounting bracket
for DB connectors
Game I/O
(DB15)
Shown to provide
reference point
Berlin
adapter card
This edge
plugs into the
Macintosh CPU
main circuit board