A Comparision of Keywords on the <strong>ZX81</strong> and ZX Spectrum Overview The following is a list of keywords, operators and delimiters used on the <strong>ZX81</strong> and ZX Spectrum. These two micros share a common base of keywords so I have listed them together with notes stating differences between how the two machines deal with these commands, statements and ...
... Tape statements The following list provides detailed explanations on cassette tape statement found on the ZX80, <strong>ZX81</strong> and ZX Spectrum. The ZX80 as only two statements, SAVE & LOAD which respectively save or load a complete program and its variables (with no filename).The <strong>ZX81</strong> has the ability to save and load with a filename and ...
... the Spectrum's 'dead flesh' rubber keyboard hides beneath it a membrane that is very similar to that on the <strong>ZX81</strong>. This membrane is extremely prone to failure after repeated use, so peripheral manufacturers quickly responded to users' needs by producing their own, and in most case more robust keyboards. Many of these 'third ...
... floating-point BASIC, so the ZX80 may actually run some programs faster than the ZX Spectrum.On the ZX Spectrum and <strong>ZX81</strong> a single keyword entry system is used when entering programs into memory, in other words a keyword like PRINT is entered by pressing the P key and the whole keyword will be display without the need to enter the ...
... 16K and 48K Introduction The ZX Spectrum was launched by Sinclair Research in April 1982, following the success of the <strong>ZX81</strong>. Designed by Richard Altwasser and developed with Sinclair's emphasis on keeping costs low, it combined colour graphics, sound and a compact design with an unusually low launch price. Two versions were available ...
... amplifiers. Digital Joystick Interfaces Features Original Price AGF Programmable Joystick ports and rapid fire with <strong>ZX81</strong> through port. Atari joystick compatible. Clip on connections simulate any of the 40 Spectrum keys. Eight way movement. No software required. Came with 'Video Graffiti' demo program. ...
... for example, on the ZX80 this was originally spelled in British-English as RANDOMISE, which shortened to RAND on the <strong>ZX81</strong>, before becoming RANDOMIZE on the Spectrum. The Sinclair QL returned to the British-English spelling of RANDOMISE. Other differences are the array dimension base, program structure, and character codes. The list ...
... lead from the Spectrum Add-on into the MIC socket.Optional joystick kits can be connected to the Spectrum Add-on.Has a <strong>ZX81</strong> through port. Spectrum Add-on - £19.50*19 Joystick kit - £3.95*19*exclusive of VAT. Petron Trichord 6134 X 3 note chords (48K ZX Spectrum), pre-programmed PROM has a range of sound effects accessed with 2 BASIC ...
... character set (requires RAM08 and DROM).‡ ‡ The USERFONT module appears to be only have been available for the <strong>ZX81</strong> with no evidence that it was ever available for the Spectrum. PERSONA - £45.00*3 RAM08 - £24.50*3 RAM16 - £26.75*3 RAM64 - £76.25*3 DROM - £48.00*3 TOOLKIT - £22.20*3 CLOCK - £45.00*3 SONUS - £30.15*3 ...
... pen and interface. Also includes a measuring wheel and software utility.For the 16K/48K ZX Spectrum. (Also for the <strong>ZX81</strong>).Only one advertisment seems to exist for this product (Your Spectrum Issue.1) and there does not appear to be any evidence that it was ever released. £49.50*16*inclusive.Advertised as 'AVAILABLE MID JANUARY ...
... KeyboardsThe original ZX Spectrum's keyboard was a forty-switch touch-sensitive membrane similar to that used on the <strong>ZX81</strong>. The forty switches were arranged in a 10 x 4 matrix, and a one-piece rubber keyboard was placed over the top of the membrane. Each key had a maximum of six functions, and these could be accessed by pressing the ...
... - advert", Your Computer, June 1984 p.34 4. "ZX Hardware - Speech", ZX Computing, December/January 1984 p.106 5. "<strong>ZX81</strong> AND SPECTRUM SPEECH SYNTHESISERS - advert", ZX Computing, June/July 1983 p.130 6. "Hardware and peripherals", Sinclair User Annual, 1986 p.121 7. "Fuller Micro Systems - advert", Your Computer, December 1984 p.297 ...