CHAPTER 1
Introduction Page 5
A guide to the features provided by the SPECTRA interface.
CHAPTER 2
Setting up the interface Page 9
How to attach the SPECTRA interface to the Spectrum and how to configure its settings.
CHAPTER 3
SCART connection Page 15
Describes the SCART connection to a TV, including details on the wiring of the cable required and how to
enable sound output. Discusses the purpose of the video signal absent indicator LED and how to resolve
a detected problem.
CHAPTER 4
New display modes Page 21
Describes the range of new display modes available and how they are generated, and provides details
on when you might need to disable them.
CHAPTER 5
Joystick socket Page 43
Describes the pin-out of the joystick socket and how it can be read, and provides details on when you
might need to disable it.
CHAPTER 6
RS232 socket Page 47
Describes the pin-out of the RS232 socket, and includes details on the wiring of a cable suitable for
connecting to a PC. Explains how the socket can be controlled from software, and provides details on
when you might need to disable it.
CHAPTER 7
ROM support Page 57
Explains how to fit an onboard ROM or add support for ZX Interface 2 ROM cartridges, and discusses
the merits and limitations of each option. Describes how to override the Spectrum’s ROM or extend it
with new BASIC commands.
CHAPTER 8
Reset button and expansion bus Page 65
Explains how to use of the reset button, and describes how the rear expansion bus differs to that
exposed by the Spectrum.
APPENDICES
A Power usage Page 71
B Hardware compatibility
Page 73
C Troubleshooting Page 75
D References Page 77
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