Ieee Peripheral Device Contact Points; Ieee Interface Cables - Commodore 8000 Series User Manual

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fRONT Of COMPUTER

IEEE_4lI8

INTERfACE

PARALLEL

USER

~"'

PRIMARV

CASSEnE

INTERfACE

Figure 6 - IEEE Peripheral Device Contact Points

The IEEE-488 interface can be used to attach up to 15 IEEE-488 devices to the computer.

Each IEEE-488 peripheral has a unique device number assigned to it. The computer "talks"

or "listens" to devices connected to the IEEE-488 interface by addressing them by their

device number. For example, suppose two devices are connected to the computer's IEEE-

488 interface. One has device number 4 and the other has device number 8. If the com-

puter sends a signal to device 4, both peripherals receive the signal, but only device 4 would

respond.

To connect several peripherals to one plug, a special PET-to-IEEE-488 cable

used.

pictured in Figure 7(B). This cable can be plugged into the computer and have an IEEE-to-

IEEE cable plugged into it piggy-back fashion. In this way, up to 15 IEEE-488 peripherals

may

attached to the computer at the same time.

PET to IEEE·4BB

I SEE FIGURE S )

Figure 7 - IEEE Interface Cables

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