The SPJ-1 (Sinclair Professional Joystick) was produced to accompany [[Amstrad]]'s unsuccessful Sinclair PC200 (an old PC with 8086 processor). The SPJ-1 was a fully-fledged analogue joystick, with potentiometers used to measure input (rather than switches as in its digital precessors). It was probably a rebadged PC-standard device. The SPJ-1 was, like its host machine, a flop, and today appears to be exceptionally rare.
== CPC+ Games Software with Analog Joystick Support ==
* [[Tennis Cup 2 ( Cartridge )]] - allows player 2 to use analog port. '''MacDeath comment :''' ''I tested it with a Trust Predator Lite PC analog joystick (4 button, 15pin socket). ''Seems to actually work a little.'' ''Yet I found out that it was impossible to go to directions Down and Right (yet Up and Left worked), Posible cause of failure are : '' *''this PC analog joystick is of a slightly more recent generation (yet still using 15pin plug) and the standard in PC may have changed (Analog joysticks needed their own drivers to work on old windows PC).'' *''4 button joystick, while Amstrad would support only 2 button Joystick (yet 2 analogue as digital joystick as impliyed replacement in connector pintwo-outplayer mode, see options menu).'' * ''incompatibility between PC analogue joysticks and the actually unreleased Amstrad GX4000/Plus analogue joystick standard.'' ''Tests have to be done with an older 2 button PC analog joystick, and further researchs on the matter.'' ''As while CPC era Joystick were less subject to exotic settings, more modern era joystick often had to feature their own drivers on PC (Win95+ era) as manufacturers often included more buttons or Autofires, having to rely on non standards PinRP11 diagnostics cartridge -out setting.'' ''The same case appears when you try allows to use a Sega Genesis/Megadrive controller on a CPC, as those have more buttons than display the mundane Atari standards.'' ''Yet if you manage to find an old 2 button PC analog Joystick, and actually own a GX4000/Plus with the Tennis Cup 2 Cartridge, it's worth giving it a try for the fun of it.'' Also if you manage to get your hands on such Joystick actually working well on GX4000/Plus, tell us.eight ADC inputs in numeric form
== CPC+ Software with Analog Joystick Support ==