ZX Spectrum: Difference between revisions
→Specifications:: + connectors and some common peripherals.
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Haggishunter (talk | contribs) (→Specifications:: + connectors and some common peripherals.) |
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* Spectrum and Spectrum+: Beeper.
* Spectrum 128 and Amstrad models: Three channels, square or noise waveforms, 10 octaves, programmable ADSR, 8-bit sample playback.
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Ports=
Connectors were kept to a minimum on the Speccy, partly for cost reasons and partly to speed up the initial launch.
* 3.5mm mono "Mic" and "Ear" jacks (actually line-out and line-in respectively, as they were meant to be plugged in to the same-named ports on a cassette recorder).
* 9V DC in.
* TV out (coaxial providing an analogue UHF signal).
* Edge Connector - literally the edge of the motherboard, sporting a double row of printed tabs. Not hot-pluggable. Attachments include:
** ZX Printer - Sinclair's spark-gap printer, that prints on 100mm-wide rolls of aluminium-coated paper. One or two electrically-compatible clones were spotted in the wild.
** ZX Interface I - provides an [[w:RS-232|RS232]] port and connectors for Microdrives<ref>A midget data tape produced by Sinclair</ref> and a proprietary LAN.
** Joystick interfaces:
*** ZX Interface II - The official one, sporting two joystick ports and a ROM cartridge connector. The joystick part was built in to the Spectrum +2. Joystick movements simulate number key presses (1-5 for the left stick, 6-0 for the right) to make life easier for game developers.
*** Kempston - the most popular.
*** Cursor - which emulates arrow key presses instead of number keys<ref>Although the arrow keys are technically shifted number keys</ref>.
*** Protek.
*** Fuller.
</tabber>
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