```php ZX Spectrum TAP Loader Sim<strong>ula</strong>tor Load a real .TAP file and watch, hear and visualise the tape signal as the ZX Spectrum receives it. Virtual Cassette Player 00:00 / 00:00 No tape loaded ▶ PLAY ■ STOP ◀ RESET Speed 0.25× 0.5× 1× 2× 4× No tape loaded Tape Signal Oscilloscope LOW EAR SIGNAL HIGH ZX Spectrum Loading Screen ...
... +2A and +2B brought much of that newer hardware back to a cassette-based machine. This gradual evolution is partic<strong>ula</strong>rly interesting because the machines continued to present themselves as ZX Spectrums throughout the process. To the casual user, a +2A could appear to be little more than another version of the familiar +2, yet ...
... ZX Spectrum keyboard consists of 40 keys arranged as eight half-rows of five keys. The keyboard is read through the <strong>ULA</strong> using the address and data buses. Address format: DEC HEX Address Port D0 D1 D2 D3 ...