Zx Copy Software Work -
Most ZX Spectrum software was distributed on standard audio cassettes, encoded as high-pitched pulses of sound. Copy software functioned through three primary methods:
Understanding how ZX copy software works is not just nostalgia. It reveals: zx copy software work
pulse length modulation
ZX Spectrum cassettes store data using a simple but robust encoding: (a variant of frequency shift keying). A binary 0 is a short pulse (~855 µs), a binary 1 is a long pulse (~1710 µs). Data is organized in: Most ZX Spectrum software was distributed on standard
- Byte-for-byte compare source vs destination.
- Checksum or CRC display.