An official mirror of the
c.s.s. Spectrum FAQ,
Since the FAQ is no longer maintained, for technical details you may want to see the
Tech Info wiki.
It now contains a significant number of corrections/improvements over the CSS FAQ.
A disassembly of the Tape Loader in ROM
(Taken from 'The Complete Spectrum ROM Disassembly')
The Complete Spectrum ROM Disassembly (Melbourne House)
The entire book is available in both
formatted ASCII format.
The Complete Spectrum 128 Disassembly
by Paul Farrow.
Includes disassemblies for both ROMs of the Spectrum 128 and Spectrum +2 ROM 0 (UK, Spanish and French), an incomplete
disassembly of the Spanish Spectrum 128 ROM 0 and an incomplete disassembly of the +3 ROMs courtesy of Garry Lancaster.
The Incomplete Spectrum ROM Assembly,
maintained by Geoff Wearmouth.
Carries full assembler listings of the ZX Spectrum, ZX80 and ZX81 ROMs.
Now you can modify the ROM yourself, recompile and test it with your favorite emulator!
Droy's Lumber Room,
maintained by Isidro "Droy" Nunez.
Another interesting site for Spectrum hardware projects!
Z80 CPU Official Support Page,
maintained by Thomas Scherrer.
Very comprehensive set of pages with everything you could think of
regarding the Z80 and its support chips, both from the hardware and the
software point of view!