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General| Processor | Zilog Z80A |
|---|---|
| Clock Speed | 3.5 MHz |
| RAM | 16KB or 48KB |
| ROM | 16KB |
| Graphics | 256 x 192 resolution |
| Sound | 1-channel beeper |
| Storage | Cassette tape |
| Input | Keyboard |
| Power | 9V DC |
| Release Year | 1982 |
| Display | TV via RF modulator |
| Ports | Expansion, RF |
| Colors | 15 (8 colours with two levels of brightness each, plus black) |
Details the core features including SCART, sound, display modes, joystick, RS232, ROM, reset, and expansion bus.
Step-by-step guide to connect the interface to the Spectrum and TV for initial use.
Explains how to connect multiple peripherals to avoid ROM conflicts and ensure proper operation.
Introduces display formats, colour resolutions, and attribute modes for enhanced graphics.
Explains the 8-bit register used to select and control new display modes.
Explains the Kempston socket, its input port, and how to read joystick input.
Details the RS232 port, pinout, and custom cable requirements for serial communication.
Lists problems like no picture, signal indicator issues, and SCART connection problems.
Addresses issues with display modes, other peripherals, and RS232/joystick conflicts.
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