Radio Shack TRS-80 Operation Manual page 14

Connection of a Cassette
Recorder
1. Connect the short cable (DIN plug on one end and three plugs on
the other) to the TAPE jack on the back of the Computer. Be
sure you get the plug to mate correctly.
3. A. Connect the black plug into the EAR jack on the side of the
recorder. This connection provides the output signal from
the recorder to TRS-80 (for loading Tape programs into TRS-
80).
B. Connect the larger gray plug into the AUX jack on the
recorder. This connection provides the recording signal to
record programs from the TRS-80 onto the tape.
Leave the AUX plug in whether you are recording or
playing back cassette data.
C. Connect the smaller gray plug into the smaller MIC jack on
the recorder. This allows the TRS-80 to automatically con-
trol the recorder motor (turn tape motion on and off for
recording and playing tapes.)
Note: Do not plug a remote microphone or a dummy plug into the
larger MIC jack.
Installation of a Plug-in ROM
Cartridge (Program Pak™)
It's possible for you to expand your COLOR COMPUTER in almost
any manner by using pre-programmed, Radio Shack ROM
cartridges.
The Computer must always be turned OFF whenever a
ROM cartridge is plugged-in or removed. —
WARNING! Do not insert fingers or other objects into the
cartridge slot. Doing so could damage your Computer.
Locate the cartridge slot on the right side of the Computer. Care-
fully insert the cartridge with the label side up and the open end
facing into the slot. The cartridge should slide smoothly into the
receptacle which is recessed into the Computer case.
If you have difficulty inserting the cartridge, it may be upside
down. Remember, it only goes in one way.
To remove a cartridge, turn OFF the Computer and gently pull out
the cartridge. Store it in a safe place.
Figure 8. Inserting a Plug-in Cartridge
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