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o
Disk controller
o
Keyboard
o
Parallel I/O interface
o
RS-232-C compatible serial interface (for external modems or serial devices)
o
RAM cartridge slot (for expansion to 512K bytes)
o
Expansion bus interface
o
Audio output jacks
o
Video output connectors (RGB, NTSC, RF modulator)
Controller Port Interface
On the side of the computer, there are two nine-pin connectors that can be used for
many different kinds of controllers. Figure 8-1 shows one of the two computer connec-
tors and the corresponding face-on view of the typical controller plug.
Face View-
Controller Plug
Face View-
Computer Connector
Figure 8-1: Controller Plug and Computer Connector
216 Interface Hardware
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