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Back | Last edited: 2005-11-28 kio |
All connectors of the ZX80 are at the rear side of the body.
This is the audio output for saving programmes and data to a tape recorder. It is a 3.5 mm mono jack. It can be connected to the Mic or Line in input of the tape recorder or HiFi equipment. All connectors are not properly surrounded by chassis plastic and you can easily insert a plug between two sockets or in the wrong socket. So be careful.
This is the audio input for loading programmes from a tape recorder. This is a 3.5 mm mono jack too. It can be connected to the Ear or Line out output of the tape recorder or HiFi equipment.
This is the connection for the power supply unit. Again, this is a 3.5 mm mono jack, like the plugs for audio in and out. Be careful not to insert the power plug into the wrong socket!
The PSU delivers unregulated, nominal 9 Volts DC. The tension without load is about 14 Volts. Center pin is +9V, shaft is Gnd.
This is a Cinch socket which should be connected with the supplied cord to the TV antenna input. The signal of the ZX80 should be on UHF channel 36.
The expansion bus offers a direct connection to many Z80 CPU signals. It is intended to connect RAM extensions and the Sinclair ZX printer. The ZX81 and most/all clones used the same expansion port. The following chart shows the connector layout of the expansion port.
Expansion port connector layout of the ZX80
Uss is the +9V from the power connector.
Input /ROMCS is not connected at the ZX80 bus connector. This input only exists in the ZX81!
Page source: The Sinclair ZX Archive <k1.spdns.de>
copyright & courtesy of kio@little-bat.de
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