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- Describes the mechanism that allows flicker-free programs on the ZX80.
- Documents the flicker-free games 3K Space Invaders (Macronics), Breakout (Macronics), Super Invasion (Beam Software) and Double Breakout (Beam Software), including full commented disassemblies.
- Presents brand new flicker-free versions of Pacman and Donkey Kong, available to download.
- Documents reconstructed flicker-free games QS Defenda (Quicksilva) and 1K Space Invaders (Macronics), including full commented disassemblies.
- Documents the 8K BASIC ROM upgrade.
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- Describes the SPECTRA interface which provides:
- A bright, clear RGB SCART connection, with sound output through the television speaker(s).
- Enhanced display modes supporting up to 64 colours and increased vertical / horizontal colour resolution.
- Double buffering mechanism, allowing flicker-free animation across all display modes.
- Kempston joystick socket, supporting auto-fire joysticks.
- ZX Interface 1 compatible RS232 socket.
- ZX Interface 2 compatible ROM cartridge socket, with support for shadow ROM paging.
- Reset button.
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- Documents the Sinclair ZX Interface 2 for use with the Sinclair ZX Spectrum.
- Documents the available ROM cartridges along with details about unreleased prototype cartridges.
- Provides details on building new cartridges, with capacities 8K-256K and programmable directly from the Spectrum, and a utility to convert cassette software into ROM cartridges.
- Provides a range of diagnostic ROM cartridge programs to help fault find Spectrum systems.
- Provides new ROM cartridge programs to download, including ZX80, ZX81, Jupiter Ace and Spectrum 128, Spanish Spectrum 128 and Microdrive emulators.
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- Describes how to build an RGB SCART cable for the Sinclair ZX Spectrum 128, +2, +3 and QL, providing full design calculations.
- Documents the optional keypad and describes how to build a compatible keypad.
- Documents the promotional literature released about the Spectrum 128.
- Contains commented disassemblies for all ROMs of the Sinclair ZX Spectrum 128, +2, +3 and Spanish 128.
- Provides an example of how to extend 128 BASIC with new commands.
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